Effect of gibberellic acid on growth and flowering of Henckelia humboldtianus Gardner (Ceylon Rock Primrose)

Sumanasiri, H.; Krishnarajah, S. A.; Eeswara, J. P.

doi:10.1016/j.scienta.2013.04.021

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…The most effective plant growth regulator for inducing in vitro flowering in our study was GA 3 , followed by BAP, and kinetin. This result agrees with reports on the application of GA 3 to Henckelia humboldtianus, which also encouraged earlier flowering (Sumanasiri et al, 2013). The effect on some species is greater than that on others.…”

Section: Histological and Ultrastructural Analysissupporting

confidence: 92%

The Role of Plant Growth Regulators in the Development of in vitro Flowering, Histology and Ultrastructural Studies in Impatiens balsamina cv. Dwarf Bush

et al. 2018

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An efficient protocol for in vitro flowering was successfully established for Impatiens balsamina cv Dwarf Bush, an important medicinal plant, through tissue culture techniques. Shoot, stem and petiole explants obtained from 4 week-old aseptic seedlings cultured on MS medium supplemented with different concentrations of plant growth regulator (PGR) were used for in vitro flower induction. Gibberellic acid (GA3), benzylaminopurine (BAP) and kinetin (Kin) treatment singly applied in MS media (pH 5.8), could all stimulate flowering at 23-26 oC with photoperiod of 16 hours light and 8 hours dark. It was observed that shoot explants were more responsive than stem explants in floral formation. Regeneration was achieved via direct organogenesis. For shoot explants, the treatment that induced the highest rate of in vitro flowering (7.30 ± 0.16 flowers per plantlet) was 1.0 mg L-1 GA3. Ultrastructural and histological analysis of in vivo and in vitro flowers were done to discover any somaclonal variation. This research described a simple protocol for rapid in vitro flowering that will be very beneficial for further breeding, cytological and molecular biology research.

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Section: Histological and Ultrastructural Analysissupporting

confidence: 92%

The Role of Plant Growth Regulators in the Development of in vitro Flowering, Histology and Ultrastructural Studies in Impatiens balsamina cv. Dwarf Bush

et al. 2018

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“…Its positive effects have been demonstrated in multiple crops and ornamental plants by exhibiting enhanced seed germination [5,6], shortening the juvenile phase, leaf expansion and development, stem elongation [7,8], early flowering [9][10][11][12][13] and fruit development; their role in the promotion of flowering in plants was reported in several studies, including Arabidopsis thaliana (thale cress) [14], Brunonia australis R.Br. (blue pincushion or native cornflower) [15], Henckelia humboldtianus (Humboldt's Stone Flower) [16], and Iris nigricans Dinsm. (black iris) [17].…”

Section: Introductionmentioning

confidence: 99%

Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

et al. 2020

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Cyclamen species (swinebread spp.) are perennial herbaceous plants which belong to the Primulaceae family, widely used as medicinal or ornamental plants. Currently, gibberellic acid (GA3), an environmentally friendly bioregulator is widely used to enhance the productivity and phenotypic characteristics of multiple ornamental crops. A dual experiment was conducted to evaluate the influence of gibberellic acid (50, 100 or 150 mg/L), on germination earliness of seeds, along with growth and ornamental quality of selected Cyclamen species. Additionally, a greenhouse experiment with long and short sunlight photoperiod was conducted to evaluate its importance in the development of Cyclamen plants. Our results indicated that under short sunlight exposure, seeds germinated earlier than those kept in long sunlight photoperiod. Plants treated with foliar applications of GA3 exhibited higher plant height, leaf area, number of leaves, root length and tuber development. Significant differences were found in germination percentage (GP), mean germination time (MGT) and seedling vigor index (SVI), within different GA3 supplementation and greenhouse sunlight intensity (short and long days). In conclusion, our study suggests that seedling vigor and ornamental quality can be increased by GA3 application, an economic strategy for enhancing germination and growth of selected Cyclamen species.

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“…Exogenous application of PGRs (e.g., GA 3 ), nutrient management, growing substrate, and cultivar breeding can potentially improve cut flower growth and quality (Burchi et al, 2010;Al-Ajlouni et al, 2017b, Ayad et al, 2019. Sumanasiri et al (2013) concluded that GA 3 (200 mg L -1 ) can be used to improve flower quality, appearance and, consequently, marketing value for Ceylon Rock Primrose flowers. GA S promotes transitions from meristem to shoot growth, juvenile to adult leaf stage, vegetative to flowering, and stimulates pedicel growth (Gupta & Chakrabarty, 2013).…”

Section: Resultsmentioning

confidence: 99%

“…Casa Blanca), the endogenous GA 3 concentration is low in daughter scales at early growth stages but then dramatically increases during bulb maturation after flowering (Kim & Kim, 2005). Exogenous application of GA 3 (200 mg L -1 ) on Ceylon Rock Primrose (Henckelia humboldtianus) reduced the number of days to flowering and increased the number of inflorescences per plant (10.9 ±1.8) compared to untreated plants (Sumanasiri et al, 2013). The application of exogenous GA 3 spray at 200 mg L -1 inhibited the effects of growth retardants (uniconazole) on shoot growth and flower induction (Jiao et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Influence of gibberellic acid on the physiology and flower quality of gerbera and lily cut flowers

Othman

Al-Ajlouni²,

A’saf³

et al. 2021

IJANR

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The objective of this study was to assess the influence of different foliar gibberellic acid (GA3) levels (0, 10, 50, and 200 mg L-1) and application timing on the growth, physiology (chlorophyll and gas exchange) and flower quality of gerbera (Gerbera jamesonii cvs. Beaudine and Palm Beach) and Asiatic lily (Lilium × elegans cvs. Fangio and Eldivo). The application of GA3 (50 mg L-1) increased (p < 0.05) gerbera shoot height (30%), pedicel length (20%), and vase life (12.5%) and decreased the number of days to flowering (7%) compared to the control. GA3 application at the seedling stage increased pedicel length and flower diameter compared to GA3 treatment at the flower initiation stage. However, the chlorophyll content index, photosynthesis (Pn), stomatal conductance (gs) and transpiration (E) were similar across the study period. For Asiatic lily, 10 and 50 mg L-1 were the best GA3 levels in terms of leaf gs, E and flower diameter. Compared to 0, 10 and 50 mg L-1-GA3, 200 mg L-1-GA3 decreased the number of days to flowering. Overall, the application of 50 mg L-1-GA3 to gerbera and lily cultivars at the seedling stage can potentially improve flower quality and shorten the number of days to flowering.

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Effect of gibberellic acid on growth and flowering of Henckelia humboldtianus Gardner (Ceylon Rock Primrose)

Cited by 10 publications

References 17 publications

The Role of Plant Growth Regulators in the Development of in vitro Flowering, Histology and Ultrastructural Studies in Impatiens balsamina cv. Dwarf Bush

The Role of Plant Growth Regulators in the Development of in vitro Flowering, Histology and Ultrastructural Studies in Impatiens balsamina cv. Dwarf Bush

Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

Influence of gibberellic acid on the physiology and flower quality of gerbera and lily cut flowers

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