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Gerbera

Gerbera is a genus of 24 accepted species (approximately 30 including debated taxa) of herbaceous perennial plants in the family Asteraceae, renowned for their large, showy, daisy-like flower heads in vibrant colors including shades of red, pink, yellow, orange, and white.^[1] Native to tropical and subtropical regions across Africa and Asia, these plants typically feature basal rosettes of leaves and flowering stems up to 60 cm tall, making them popular ornamentals in gardens and as cut flowers. The genus is classified in the tribe Mutisieae and was named in honor of Traugott Gerber, an 18th-century German botanist and physician.^[2]^[3]^[1]^[4]^[5] The most prominent species, Gerbera jamesonii (Barberton daisy or Transvaal daisy), originates from southern Africa, particularly South Africa and Eswatini, and forms the basis for the vast majority of commercial hybrids through crosses with other species like Gerbera viridifolia. These hybrids exhibit diverse flower forms—single, double, or crested—and are grown extensively in greenhouses for their long vase life of up to two weeks and resistance to wilting. Gerbera cultivation requires well-drained soil, full sun, and temperatures between 15–25°C, with major production centers in the Netherlands, Colombia, Kenya, and Zimbabwe to supply global markets.^[6]^[7]^[5]^[8] Economically, Gerbera ranks among the top five cut flowers worldwide, symbolizing innocence, purity, and cheerfulness in floral arrangements, with wholesale value of cut flower production in the United States valued at $22.2 million as of 2021.^[9] The genus's species diversity, with accepted taxa ranging from Gerbera ambigua to Gerbera piloselloides, supports ongoing breeding for disease resistance and novel colors, while wild populations face threats from habitat loss in their native ranges. Advances in tissue culture and molecular genetics have enhanced propagation efficiency, ensuring Gerbera's continued prominence in the floriculture industry.^[3]^[10]^[8]^[1]

Taxonomy

Etymology

The genus Gerbera was named in 1737 by the Dutch botanist Jan Frederik Gronovius in honor of Traugott Gerber (1710–1743), an 18th-century German botanist and physician who was a close friend of Carl Linnaeus.^[11] Gronovius established the genus based on specimens of a South African plant in the Asteraceae family, marking one of the early uses of binomial nomenclature for this group, though the name was later validated by Linnaeus in 1753.^[12] Traugott Gerber, born on January 16, 1710, in Zodel, Lower Silesia, studied medicine at the University of Leipzig, earning his doctorate in 1735 before relocating to Moscow. There, he served as a physician, directed the Apothecaries' Garden (Russia's oldest botanical garden), and taught medicine while leading expeditions from 1739 to 1741 to collect medicinal plants across the Russian countryside.^[13] The naming of the genus reflects Gerber's pivotal contributions to botany, particularly his extensive herbal studies and plant-gathering travels, which enriched European knowledge of medicinal flora despite his early death at age 33 in Wyborg, Finland.

Description

Gerbera species are perennial herbaceous plants belonging to the Asteraceae family, characterized by a scapose habit with a basal rosette of leaves and flowering stems that lack foliage. These plants typically reach heights of 20-50 cm, arising from a perennial rootstock that becomes somewhat woody with age.^[14]^[15] The leaves are radical, arranged in a rosette, and vary from lanceolate to pinnatifid or sinuate-pinnatifid in shape, measuring 10-30 cm in length. They may be entire, serrulate, dentate, or lobed, with surfaces that range from glabrous to hairy, often villose or tomentose on the lower side and becoming glabrescent over time.^[14]^[16] Inflorescences consist of solitary capitula, or flower heads, that are 5-12 cm in diameter and radiate in structure. These feature peripheral ray florets, which are female and exhibit striking two-lipped forms in colors including yellow, orange, red, pink, and white, surrounding central disc florets that are typically bisexual and yellowish.^[17]^[18] The root system is fibrous or forms short rhizomes, adapted to well-drained conditions, supporting the plant's perennial nature. The base chromosome number is x=25, with diploid species exhibiting 2n=50, and polyploidy occurring in some taxa, contributing to morphological variation. Distinguishing Gerbera from related genera like Arctotis and Gazania involves the pappus structure on the cypselae, which in Gerbera comprises bristles, scales, or a combination thereof, whereas Arctotis and Gazania primarily feature scales.^[19]^[20]^[21]^[22]

Infrageneric Classification

The genus Gerbera comprises approximately 30 species, with the infrageneric classification primarily established by H.V. Hansen in his taxonomic revisions of the late 20th century.^[23] Hansen divided the genus into four sections based on morphological traits such as pappus structure, leaf form, and floret characteristics, providing a framework that has influenced subsequent taxonomy.^[24] Section Gerbera includes approximately 8 species primarily from southern Africa, distinguished by a multi-seriate pappus composed of numerous fine bristles.^[25]^[26] Representative species include G. jamesonii, commonly known as the Transvaal daisy, which features large capitula with vibrant ray florets.^[23] Section Piloselloides (Sch.Bip.) H.V. Hansen encompasses 2 species from Africa, notable for their distribution across tropical and southern regions. An example is G. piloselloides, which exhibits hairy stems and smaller, less showy inflorescences.^[27]^[28] Section Pseudoseris (Baill.) H.V. Hansen consists of 2 species restricted to Madagascar, characterized by simple leaves and pale-colored ray florets.^[24] G. maculata exemplifies this section, with its erect habit and capitula featuring reduced ray florets.^[29] Section Parva H.V. Hansen contains 1-2 species of small stature native to tropical Africa, marked by compact growth and diminutive overall morphology.^[28] G. viridifolia is a key representative, known for its green, viridulous foliage and modest inflorescences.^[30] Section Lasiopus (Cass.) Sch.Bip. includes about 5 species distributed across Asia, with laciniate leaves.^[31] Recent phylogenetic analyses since 2010, utilizing molecular markers such as nuclear ITS sequences and plastid regions (e.g., trnL-trnF and trnL-rpl32), have confirmed the monophyly of Gerbera sensu stricto. A 2018 study supported Hansen's sectional divisions while incorporating transfers of approximately 14 South American species from genera like Onoseris and Uechtritzia into a new section within Gerbera, expanding the genus to about 32 species and highlighting its biogeographic patterns within the Mutisieae tribe.^[32]^[31] These studies emphasize the African-Madagascan-Asian core with New World extensions.^[33] Historically, the genus has undergone reclassifications, including the transfer of certain species from the South American genus Onoseris (e.g., O. hieracioides to G. hieracioides), reflecting broader phylogenetic realignments in the Gerbera-complex.^[34] Synonyms such as those from Leibnitzia and Uechtritzia have also been resolved through these taxonomic shifts.^[28]

Distribution and Habitat

Geographic Range

The genus Gerbera is native to tropical and subtropical regions, with its primary center of diversity in southern Africa, where approximately 15–17 species occur across South Africa, Lesotho, and Eswatini (Swaziland).^[35] High levels of endemism are noted in the Drakensberg Mountains of South Africa, supporting several species adapted to montane grasslands.^[36] Additional native distributions include tropical Africa, with species recorded in countries such as Zimbabwe and Mozambique, as well as Madagascar, where 8 species are endemic.^[26] In Asia, around 10 species are found in tropical regions, including India and Indonesia, with notable diversity in the Eastern Ghats of India and extending to China, Indo-China, and the Lesser Sunda Islands.^[1] The genus comprises about 30 species overall, with sectional distributions such as Gerbera concentrated in Africa.^[26] No species are native to South America, despite occasional misattributions in older literature.^[1] Gerbera species have been widely introduced and cultivated globally through human activity, including in Australia, Mediterranean Europe, and South America.^[4] The historical spread began with European introductions in the 1880s, primarily from South African collections of G. jamesonii, which were first flowered in Europe between 1878 and 1888.^[37] These introductions facilitated global dissemination as ornamental plants.^[4] Native Gerbera species predominantly occupy USDA hardiness zones 9–11, corresponding to warm temperate to subtropical conditions, though some tolerate zone 8 with protection.^[7] Their altitudinal range spans from sea level to 2500 m, with certain Asian species reaching up to 3200 m in the Himalayas.^[38] This elevational variation reflects adaptations to diverse subtropical landscapes across their native continents.^[27]

Preferred Habitats

Gerbera species primarily thrive in open, sun-exposed ecosystems across their native ranges, with many African taxa adapted to grassland and savanna habitats. These environments often feature rocky slopes, disturbed ground, and sandy-loamy soils that provide excellent drainage, allowing the plants to establish deep root systems capable of accessing moisture during dry periods. For instance, Gerbera jamesonii occurs in grasslands with sandy, well-drained substrates, while Gerbera piloselloides is a pyrophyte characteristic of seasonally wet grasslands, wooded grasslands, open deciduous woodlands, and even heath or moorlands at elevations from 900 to 3700 m. Similarly, Gerbera viridifolia is found in open grasslands, savannas, and open Miombo woodlands on stony soils, including river banks and mountain slopes, where it tolerates a range from full sun to partial shade.^[35]^[39] In Asia and Madagascar, Gerbera species occupy more varied niches, including forest margins and shrublands that offer partial shade and elevated humidity levels. Asian representatives, such as Gerbera delavayi, grow in barren grasslands, plains, slopes, and woodlands at high altitudes of 1800–3200 m, benefiting from the moderated microclimates in these transitional zones. Detailed ecological data for Madagascan endemics in section Pseudoseris indicate adaptation to the island's diverse shrublands and forest edges, aligning with preferences for humid, partially shaded conditions that support their perennial growth. These habitats reflect the genus's broader adaptation to ecosystems with moderate disturbance and variable light exposure.^[40]^[24] Soil conditions across Gerbera habitats emphasize well-drained profiles with low fertility, typically sandy or stony, and an intolerance to waterlogging that could lead to root rot. These soils range from acidic to neutral pH (approximately 5.5–7.0), facilitating nutrient uptake in nutrient-poor settings without excessive moisture retention. Climatically, the species are attuned to seasonal rainfall regimes of 500–1500 mm annually, concentrated in wet summers, with daytime temperatures between 15–30°C; they are notably frost-sensitive, limiting their persistence in cooler, temperate zones. Gerbera often co-occurs with grasses (Poaceae) in expansive grasslands and with Proteaceae in fynbos-like shrublands, contributing to diverse floral assemblages in these biomes. However, habitat loss driven by agricultural expansion poses a significant threat to wild populations in their native ranges, fragmenting these specialized ecosystems.^[4]^[41]^[42]

Ecology

Reproduction and Pollination

Gerbera species exhibit varied flowering periods depending on their native habitats and environmental conditions. In tropical regions, plants can flower year-round, producing capitula continuously under favorable warmth and moisture. In subtropical areas, such as the native range of Gerbera jamesonii in South Africa, flowering is typically seasonal, peaking in spring and summer with blooms extending into fall. The capitula are protogynous, with female structures maturing before male ones, which promotes cross-pollination and reduces self-fertilization.^[15]^[6]^[4] Pollination in Gerbera is primarily entomophilous, relying on insect vectors for effective reproduction. Common pollinators include bees such as Apis species, butterflies, and beetles, which are attracted to the bright ray florets and nectar in the disk florets. While some species show self-compatibility, outcrossing is preferred due to the protogynous nature of the capitula, enhancing genetic variability in natural populations. Studies on Gerbera aurantiaca indicate that flower color variations may influence pollinator preferences, with certain morphs specialized for beetle and bee visitation. In cultivated hybrids like Gerbera hybrida, manual cross-pollination is often required in breeding programs due to self-incompatibility in many clones.^[43]^[44]^[45] Following successful pollination, Gerbera produces achene fruits topped with a pappus of bristles, facilitating wind dispersal of seeds. These cypselas are lightweight and plume-like, allowing them to travel moderate distances in breezy conditions, which aids in colonizing new areas within grasslands and savannas. Seed viability typically lasts 6-12 months under proper storage, with germination occurring when sown fresh in well-drained media at 20-25°C.^[46]^[47]^[48] Asexual reproduction occurs rarely in wild Gerbera populations but is observed via rhizomatous offsets or basal shoots in species like G. jamesonii, enabling clonal propagation in stable habitats. This method maintains genetic uniformity in established clumps but is less common than sexual reproduction for long-distance spread.^[7] Wild Gerbera populations maintain high genetic diversity through outcrossing and seed dispersal, supporting adaptation to varied grassland environments. In contrast, cultivated hybrids exhibit reduced diversity due to selective breeding for ornamental traits, leading to narrower gene pools.^[49]^[50] In ecosystems, Gerbera serves as a nectar source for pollinating insects, contributing to biodiversity in native African grasslands and subtropical regions. Its wind-dispersed seeds further promote habitat connectivity and support insect and bird communities indirectly through floral resources.^[43]^[44]

Pests and Diseases

Gerbera species in natural and semi-natural environments face several biotic threats, primarily from insects, fungi, viruses, and nematodes, though these occur at lower intensities compared to cultivated settings due to diverse ecosystems and sparser plant densities.^[51] The basal rosette of leaves and fibrous root system render the plants particularly susceptible to damage on foliage and roots.^[35] Insect pests such as aphids (Myzus persicae), thrips (Frankliniella occidentalis), and leaf miners (Liriomyza spp.) target Gerbera, feeding on sap and tissues to cause distorted growth, reduced vigor, and scarring on leaves and flowers.^[51] Aphids cluster on tender shoots and undersides of leaves, extracting juices that weaken plants and promote sooty mold development from excreted honeydew.^[52] Thrips rasp surface cells on flowers and foliage, leading to silvering, discoloration, and deformed blooms, while leaf miners create serpentine tunnels in leaves, impairing photosynthesis and aesthetics.^[51] Fungal diseases including powdery mildew (Golovinomyces cichoracearum, formerly Erysiphe cichoracearum) and root rot caused by Phytophthora spp. pose risks, especially in humid microhabitats within native ranges.^[52] Powdery mildew manifests as white, powdery growth on leaves and stems, reducing photosynthetic capacity and stunting growth in affected plants.^[51] Root rot thrives in waterlogged soils, leading to wilting, root decay, and eventual plant collapse by disrupting nutrient uptake.^[52] Viral infections, notably tomato spotted wilt virus (TSWV), transmitted by thrips vectors, induce symptoms like chlorotic rings, necrosis, and overall stunting in Gerbera populations.^[52] This orthotospovirus causes systemic effects, including mottled leaves and brittle stems, severely limiting plant health and reproductive output.^[51] Nematodes, particularly root-knot nematodes (Meloidogyne spp.), infest the fibrous roots of Gerbera, forming galls that impair water and nutrient absorption, resulting in yellowing foliage and diminished growth.^[51] In wild African habitats, such as South African grasslands where Gerbera jamesonii is native, pest and disease incidence remains lower than in cultivation, attributed to environmental variability and natural predator presence, though herbivory by grazing mammals like antelope (e.g., steenbok or duiker) can damage foliage and flowers, potentially reducing seed production and population fitness in overgrazed areas.^[53] These browsers target tender parts, potentially reducing seed production and population fitness in overgrazed areas.^[54] Natural controls mitigate these threats in native ecosystems, with predatory insects such as lady beetles and parasitic wasps preying on aphids and thrips, while spiders (e.g., Plexippus paykulli and Oxyopes birmanicus) capture leaf miners and other herbivores.^[55] Additionally, wild genotypes exhibit varying resistance to pathogens like powdery mildew and nematodes, contributing to population resilience.^[51]

Cultivation

Propagation Methods

Gerbera plants can be propagated through several methods, including seeds, vegetative division, and tissue culture, each suited to different horticultural goals such as maintaining cultivar uniformity or producing virus-free stock.^[8] Seed propagation involves surface sowing the achenes on a sterile, well-draining medium like peat-perlite mix to allow light exposure, which is essential for germination. Optimal germination occurs at temperatures of 20-25°C, typically taking 10-21 days, though hybrid cultivars often exhibit sterility or fail to produce offspring true to the parent due to their complex genetics.^[56]^[47]^[8] Vegetative propagation by division of rhizomes or crowns is commonly performed in spring, where established clumps are carefully separated into sections each containing roots and shoots, achieving success rates of 70-90% under controlled conditions. This method preserves genetic fidelity for hybrid varieties but offers limited multiplication, yielding only about 5 new plants per mature clump annually.^[57]^[58] Tissue culture, particularly meristem culture, has been utilized commercially since the 1990s to produce virus-free plants on a large scale, initiating with protocols developed in the 1970s. Micropropagation begins with explant selection, such as shoot tips or meristems disinfected and cultured on Murashige and Skoog (MS) medium supplemented with cytokinins like benzyladenine (BA) at 1-2 mg/L for shoot multiplication, followed by transfer to auxin-enriched medium (e.g., indole-3-acetic acid or naphthaleneacetic acid) for rooting, and finally acclimatization in a greenhouse with survival rates of 80-95%.^[59]^[60]^[57] While seed propagation promotes genetic diversity suitable for breeding new varieties, it is less reliable for commercial hybrids; vegetative division ensures clonal uniformity but is labor-intensive and slow; tissue culture excels in mass production of elite cultivars, though it requires specialized facilities and can introduce epigenetic variations if cytokinin levels are excessive.^[8]^[60]

Growing Conditions

Gerbera plants thrive in conditions that replicate their native subtropical grassland origins, where they receive ample sunlight and well-aerated soils.^[61] Optimal cultivation requires full sun exposure of at least six hours daily, though partial shade during intense afternoon heat prevents scorching in hotter climates.^[62] Daytime temperatures should range from 18–24°C (65–75°F), with nighttime lows of 13–18°C (55–65°F) to promote healthy growth and flowering; temperatures below 5°C (41°F) necessitate frost protection, as Gerbera is not reliably hardy below USDA Zone 8.^[63] Soil for Gerbera must be porous and well-drained to prevent root rot, typically composed of a mix such as peat, perlite, and vermiculite in equal parts, with a slightly acidic pH of 5.5–6.5.^[61] Regular fertilization with a balanced NPK formula (e.g., 20-20-20) every two weeks during the active growing season supports vigorous development, while micronutrients like boron should be included periodically to address deficiencies.^[62] Watering should maintain consistent soil moisture without waterlogging—aim for the top inch to dry slightly between applications—and reduce frequency during winter dormancy to avoid excess humidity.^[63] For potted or garden planting, space Gerbera 30–45 cm (12–18 inches) apart to allow air circulation and prevent overcrowding; pinching back spent flowers and leggy stems encourages bushier growth and prolonged blooming.^[62] Most cultivated Gerbera are hybrids derived from Gerbera jamesonii, offering over 300 cultivars in diverse colors (red, pink, yellow, orange, white) and forms (single, double, crested).^[64] In commercial settings, greenhouse hydroponic systems predominate in major producing countries such as the Netherlands, Colombia, Kenya, Israel, and Zimbabwe, yielding approximately 50–100 stems per plant annually, depending on cultivar type and conditions.^[65] Recent advancements since 2020 emphasize LED lighting supplementation to enable year-round production, enhancing flower quality and energy efficiency without yield loss.^[66]

Uses

Ornamental Applications

Gerbera species, particularly Gerbera hybrida, are prized in the cut flower industry for their vibrant colors and extended vase life, typically ranging from 10 to 14 days under optimal conditions.^[67] This durability makes them one of the top 10 most commercially important cut flowers worldwide, alongside roses and chrysanthemums.^[68] Global production exceeds hundreds of millions of stems annually, with the United States alone accounting for over 70 million stems valued at approximately $41 million as of 2014 data, reflecting their significant market presence.^[3] In garden and indoor settings, Gerbera plants serve as border perennials or potted ornamentals, adding bold color to landscapes and homes.^[15] Their compact growth habit suits container cultivation, while their daisy-like flowers enhance floristry applications, including wedding bouquets and mixed arrangements where they provide cheerful focal points.^[61] Breeding efforts began in the late 1890s in the United Kingdom, particularly at Cambridge Botanic Garden, where hybrids were developed by crossing South African natives like Gerbera jamesonii with Gerbera viridifolia to improve flower size and color.^[35] Early 20th-century work in South Africa and Europe introduced double-flowered and spider varieties, expanding ornamental appeal through increased petal density and unique quilled forms.^[69] Gerbera cultivars exhibit diverse flower forms, including single (one row of ray florets), double (multiple rows), and crested (with a central disc of short petals), alongside spider types featuring elongated, twisted florets.^[70] Interspecific crosses have broadened the color spectrum to include white, yellow, orange, pink, red, and purple shades, enhancing their versatility in decorative uses.^[5] Major exporters like Kenya, the third-largest flower exporter worldwide, and Colombia, a leader in cut flower volumes, drive production through large-scale greenhouse operations, supplying significant portions to international markets.^[71] In floriography, Gerbera symbolizes innocence, purity, and cheerfulness, often representing loyal love and joyful energy due to their bright, uplifting appearance.^[72]^[73]

Medicinal and Other Uses

Gerbera species have been employed in traditional medicine across their native regions. In South African folk medicine, root infusions of Gerbera ambigua are taken orally to alleviate colds and coughs, while pounded leaf infusions are used to treat stomach aches and tapeworms.^[74] Similarly, Gerbera jamesonii has been traditionally utilized for conditions such as cystitis, painful menstruation, and mild urinary tract issues. In Asia, species like Gerbera piloselloides serve as folk remedies for digestive ailments, including enterogastritis, edema, and related disorders.^[76] Phytochemical analyses of Gerbera species reveal the presence of flavonoids, sesquiterpene lactones, coumarins, phenolic acids, and sterols, which contribute to their anti-inflammatory and antioxidant properties.^[77]^[78] Extracts from these plants have demonstrated antimicrobial activity, particularly through essential oils that inhibit bacterial and fungal growth in laboratory settings.^[79] Modern research has explored Gerbera's potential in cancer therapy, with extracts and isolated compounds showing cytotoxicity against human cancer cell lines such as HCT-116 (colorectal) and A549 (lung adenocarcinoma) via induction of apoptosis and cell cycle arrest in in vitro studies from the 2010s onward.^[78]^[80] Additionally, compounds like cyclobrachycoumarin from Gerbera piloselloides have been investigated for promoting apoptosis in colorectal cancer models.^[81] Essential oils derived from Gerbera flowers are incorporated into aromatherapy products for their purported calming and mood-enhancing effects, though clinical evidence remains limited.^[82] Beyond medicine, Gerbera florets provide natural dyes for textiles, yielding vibrant colors through extraction processes.^[83] In some regions, the plants serve as low-toxicity fodder for livestock due to their general non-toxic profile to animals.^[84] Species like Gerbera perrieri are also utilized for erosion control in native habitats through their root systems that stabilize soil.^[85] Gerbera is generally considered non-toxic, but contact with certain species can cause allergic dermatitis in sensitive individuals, and human clinical trials on its therapeutic uses are scarce.^[86]

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Chronology - Gerbera.org
Gerbera jamesonii. 1737. GRONOVIUS, 1690-1762, established the species Gerbera Casso corr. Spreng and named it after Traugott GERBER.
[36]
[PDF] GERBERA.pdf - CUTM Courseware
Common Name:Transvaal Daisy,. Barberton Daisy or African Daisy. Chromosome No: 2n= 50. Origin : South Africa ...<|control11|><|separator|>
[37]
Gerbera Viridifolia
Ecology: In open grassland, on savanna or in open Miombo-woodland, in stony soil, on river banks and mountain slopes, along roads etc., from sun to shade, from ...Missing: natural | Show results with:natural
[38]
Properties of Natural Fibers from the Abaxial Side of Fireweed ...
Sep 13, 2016 · This plant grows in barren grasslands at an altitude range of 1800–3200 m (IBCAS Citation1987). G. delavayi is well known as “fireweed” because ...Missing: habitat ecology
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Highveld Grasslands - One Earth
Relatively high rainfall maintains the grasslands during the summer months, with the mean annual rainfall between 400 and 900 mm.
[40]
Gerbera aurantiaca | PlantZAfrica
The species is under considerable threat of extinction due to habitat fragmentation and degradation resulting from agriculture and urban sprawl. Gerbera ...
[41]
Native honeybees as flower visitors and pollinators in wild plant ...
Feb 3, 2020 · ... Gerbera ambigua, Indigofera foliosa, and Rubus ludwigii. All plants visited by honeybees were listed as Least Concern on the South African ...
[42]
Geographical Variation in Flower Color in the Grassland Daisy ...
Here we hypothesized that flower color polymorphism in G. aurantiaca is maintained by natural selection from pollinator preference or from differences in soil ...
[43]
Large scale interaction analysis predicts that the Gerbera hybrida ...
Reproductive roles of MADS box genes in plants extend from determination of floral organ identity to other floral processes such as control of meristem ...
[44]
Organ identity genes and modified patterns of flower development in ...
Jan 5, 2002 · Isolation, phylogeny and classification of gerbera MADS box cDNAs ... Schwarz-Sommer, Zs, Hue, I., Huijser, P., Flor, P.J., Hansen, R.
[45]
[PDF] Gerbera Production Tutorial - Sakata Ornamentals
Formulations that provide higher amounts of potassium, such as 15-3-20, build strong plants with high flower bud count. Page 22. 22. Nitrogen Fertilization. 50 ...
[46]
(PDF) Production of synthetic seeds from micro shoots and somatic ...
Aug 5, 2025 · High germination rate (75-95%) was achieved after one to three months storage, whereas low germination rate (8-50%) was obtained after four to ...<|control11|><|separator|>
[47]
Genetic variation and pollination biology in the threatened Gerbera ...
Aug 6, 2025 · The 20 species segregate into three pollination types based on divergent patterns of pigmentation, scent production, perianth tube length, and ...
[48]
Gerbera flowers. A. Diploid B. Tetraploid. - ResearchGate
Within the resulting progeny, between 16% and 35% of plants were polyploid when N2O was applied between one and four days after pollination. A comparative ...Missing: x= | Show results with:x=
[49]
Managing Pests in Gardens: Floriculture: Gerbera Daisy—UC IPM
Diseases · Bacterial leaf spot and blight · Botrytis blight (gray mold) · Leaf spots. Alternaria gerberae; Ascochyta gerberae · Powdery mildew · Root, crown, and ...Missing: habitats | Show results with:habitats
[50]
https://www.researchgate.net/figure/Gerbera-flowers-A-Diploid-B-Tetraploid_fig4_349913128
[51]
Effects of rainfall, competition and grazing on flowering of ...
Oct 29, 2010 · Birds, hares and small antelope consumed 10–50% of the flowers. Size‐class distributions indicated that little recent recruitment had taken ...
[52]
Five small antelope species diets indicate different levels of ...
Jun 28, 2022 · The objective of this study was to determine the forage use of five antelope species and thereby assess their level of anthrodependence in terms of diet.Missing: Asteraceae | Show results with:Asteraceae
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[PDF] Documentation of insect-pests in Gerbera (Gerbera jamesonii H ...
In addition to confirming the prevalence of previously documented pests, the present study identified new pest species infesting gerbera, including the aphid ( ...Missing: habitats | Show results with:habitats
[54]
How to grow gerberas - RHS
Keep them between 10–20°C (50–68°F) to encourage flowering. Most will stop flowering below 10°C (50°F) or above 20°C (68°F), but will restart once ...
[55]
[PDF] establishment of in vitro propagation protocol of gerbera jamesonii ...
The vegetative method is usually carried out by rhizome divisions and cuttings. Although this method maintains uniformity and genetic purity, the technique is ...
[56]
In Vitro Formation of Gerbera (Gerbera hybrida Hort.) Plantlets ...
In gerbera division propagation is quite inefficient as only 5 plantlets on the average are produced per year from a single. 1-year-old plant. Even with the ...
[57]
[PDF] STUDIES ON TISSUE CULTURE IN GERBERA (Gerbera jamesonii L.)
The genus Gerbera was named in the honor of a German naturalist, Traugott Gerber. It is considered to be native to South African and Asiatic regions. The genus.Missing: etymology history
[58]
(PDF) Gerbera micropropagation - ResearchGate
Aug 7, 2025 · Epigenetic variations in micropropagated gerbera are frequently observed only with high concentrations of cytokinins in the culture medium but ...
[59]
Gerbera Daisies: A Growing & Care Guide - Garden Design
Plant in compost-rich, well-drained, slightly acidic soil (pH of 5.5 to 6.5). Good soil drainage is important to avoid crown and root rot. If you have heavy ...Missing: cultivation cultivars
[60]
Gerbera Daisy Care: Essential Growing Tips for Home Gardeners
Mar 3, 2025 · Gerbera daisies (Gerbera jamesonii) are bright, colorful flowers that are commonly planted in gardens as bedding plants or in containers in South Carolina.Missing: economic | Show results with:economic
[61]
How to Grow and Care for Gerbera Daisy - The Spruce
Sep 22, 2025 · Gerbera daisies need full to partial sun, rich, slightly acidic soil, 1 inch of water weekly, and monthly spring/summer fertilizer. Deadhead ...Missing: rosette scapose
[62]
Don't Miss Mind-Expanding Gerbera - Farmer Bailey
Gerberas are native to subtropical Southern Africa. They grow at a bit of altitude which gives them warm sunny days and cooler nights. They can take a light ...
[63]
"Switching to LED in gerbera is possible without losing production"
Sep 2, 2025 · "The results show that with the integration of LEDFan, growers can successfully cultivate Gerbera, using 100% LED lighting—while improving ...Missing: year- 2020
[64]
Optimal Vase Solution for Gerbera hybrida Cut Flower Keeping ...
Dec 28, 2024 · Gerbera (Gerbera hybrida) is a popular cut flower on the market, so extending its vase life (VL) is an important goal in the horticultural ...
[65]
Overview of Major Cut Flower Crops: Carnation, Chrysanthemum ...
Nov 2, 2023 · Five crops stand out as the true champions of the cut flower industry: carnations, chrysanthemums, gerberas, statice, and roses.
[66]
https://www.floraldaily.com/article/9760266/switching-to-led-in-gerbera-is-possible-without-losing-production/
[67]
[PDF] Inheritance of the Flower Types of Gerbera hybrida - SciSpace
capitulum traits, floret traits, gerbera genetics, crested gerberas, spider gerberas ... to 44%, depending on the particular cross. It is probably not de ...
[68]
https://agriculture.institute/floriculture-and-landscaping/major-cut-flower-crops-overview/
[69]
Gerbera Flower Meaning and Colour Symbolism | Bloom & Wild
They typically mean beauty, innocence, purity and loyal love. Because of their huge range of brights colours, they also have a meaning of cheerfulness.
[70]
Floriography and the Secret Language of Flowers - Tallahassee ...
Jan 3, 2018 · Gerbera daisies signify innocence, purity and cheerfulness. They are available year-round and come in an assortment of vibrant colors. Virginia ...
[71]
Gerbera ambigua | PlantZAfrica
The genus Gerbera was named by Jan Gronovius in 1737 for the Gerber brothers: Fr. Gerber, who collected plants in the West Indies , and Traugott Gerber, a ...Missing: initial | Show results with:initial
[72]
(PDF) Pharmacological benefits of Gerbera jamesonii Adlam flower
Jul 24, 2024 · Traditionally, G. jamesonii has been utilised for treating conditions such as cystitis, painful menstruation, and mild urinary tract issues ( ...
[73]
Four new glycosides from Gerbera piloselloides - ScienceDirect
Gerbera piloselloides (L.) Cass, as a folk medicine, has been a natural remedy for many diseases such as fever, cough, asthma, edema, enterogastritis, and so on ...
[74]
Phytochemistry and Pharmacological Analysis of Gerbera Jamesonii
Oct 2, 2025 · In addition, the plant contains abundant flavonoid, coumarin, phenolic acid, and sterol and exhibits strong antioxidant, anti-inflammatory, anti ...
[75]
[PDF] Phytochemistry and Pharmacological Analysis of Gerbera Jamesonii
Sep 22, 2025 · In addition, the frequency of sesquiterpene lactones that is common over the family has anti-inflammatory and cytotoxic properties with potency, ...
[76]
Gerbera delavayi Franch. and Gerbera piloselloides (L.) Cass
This study was designed to investigate the essential oil (EO) compositions, as well as the antioxidant and antimicrobial properties of G. piloselloides and G. ...
[77]
Anticancer Activity of Gerbera Jamesonii on A549-Adeno ...
In vitro studies showed that TMEM158 silencing inhibited proliferation, and migration and increased apoptosis of CRC cells, whereas overexpression of ...
[78]
Cyclobrachycoumarin from Gerbera piloselloides Inhibits Colorectal ...
Nov 30, 2024 · Cyclobrachycoumarin was found to induce CRC cell apoptosis and cell cycle arrest in a dose-dependent manner. This treatment also led to ...
[79]
Gerbera Floral Essential Oil for Aromatherapy | Scentopia Singapore
Explore the lovely floral gerbera essential oil at Scentopia Singapore. Perfect for aromatherapy blends, relaxation, and natural fragrance.
[80]
[PDF] EXTRACTION OF NATURAL DYES FROM FLORAL WASTE
The extracted coloring materials from the flowers were utilized for dyeing fabric and yarn samples. Following the completion of the extraction procedure, the.
[81]
Gerber Daisy | ASPCA
Gerbera jamesonii. Family: Compositae. Toxicity: Non-Toxic to Dogs, Non-Toxic to Cats, Non-Toxic to Horses. Was this information helpful? You can support all ...Missing: fodder | Show results with:fodder
[82]
Gerbera perrieri - Uses, Benefits & Common Names - Selina Wamucii
Gerbera perrieri is used as an ornamental plant, for erosion control, and as a medicinal plant. Flower, Seeds and Seedlings. The flower of Gerbera perrieri ...
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Occupational allergic contact dermatitis and Type I sensitization ...
Occupational allergic contact dermatitis and Type I sensitization caused by Gerbera in a greenhouse worker.Missing: toxicity | Show results with:toxicity