in vitro germination of desert rose varieties(

Clicks: 53
ID: 145474
2015
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Abstract
The drought stress resistance is a characteristic of the desert rose and its estimable beauty flowers, which gave it great relevance in the ornamental market. However, the desert rose production and germination is hampered by possible sterility of their male and female flowers and frequent problems in pollination, so the tissue culture is a promising alternative to the propagation of these plants. This study aimed to evaluate the effect of gibberellic acid on four commercial varieties of desert rose (Adenium obesum) cultivated in vitro. The seeds of the varieties ‘Orange Pallet’, ‘Carnation violet’, ‘Diamond ring’ and ‘Vermiliont’ were sterilized and inoculated on Water + Agar (T0), medium MS (T1), ½ MS (T2), MS + 0.25 mg L-1 GA3 (T3), MS + 0.5 mg L-1 GA3 (T4), ½ MS + 0.25 mg L-1 GA3 (T5), ½ MS 0.5 mg L-1 GA3 (T6). The seeds germination of A. obesum was initiated on the fourth day of cultivation and on the tenth day was possible to observe the expansion of the cotyledons and leaf expansion with subsequent development of early secondary root. The ‘Orange pallet’ variety germinated 100% of seeds on water + agar and MS ½ + 0.5 mg L-1 of GA3. For ‘Diamond Ring’ and ‘Carnation violet’ the highest rate of germination occurred in treatments MS ½; 0.25 mg L-1 GA3; MS + 0.5 mg L-1 GA3 MS ½ + 0.5 mg L-1 GA3 averaging 80% and 70%, respectively. For ‘Vermiliont’ the best response was in MS and MS ½ + 0.5 mg L-1 GA3 ranging between 70-90% germinated embryos. It was registered different malformations in all treatments like absence of roots and apexes during seedling development. The concentrations of GA3 did not affect significantly the seed germination.
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varella2015ornamentalin Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Tatiane Lemos Varella;Gizelly Mendes Silva;Kaliane Zaira Camacho Maximiliano da Cruz;Andréia Izabel Mikovski;Josué Ribeiro da Silva Nunes;Ilio Fealho Carvalho;Maurecilne Lemes Silva
Journal Neuropharmacology
Year 2015
DOI
10.14295/aohl.v21i2.676
URL
https://ornamentalhorticulture.emnuvens.com.br/rbho/article/view/676
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