期刊
ORNAMENTAL HORTICULTURE-REVISTA BRASILEIRA DE HORTICULTURA ORNAMENTAL
卷 27, 期 1, 页码 33-40出版社
SOC BRASILEIRA FLORICULTURA & PLANTAS ORNAMENTAIS
DOI: 10.1590/2447-536X.v27i1.2161
关键词
cut rose; micropropagation; physiological disorders; ethylene inhibitor; flower induction
资金
- CNPQ [311083/2018-8]
- FAPESP [2018/02595-5, 2018/07122-8, 2019/00243-7]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [18/07122-8, 19/00243-7] Funding Source: FAPESP
The study found that in vitro cultivation of rose cv. Sena under different concentrations of AgNO3 and two light sources helps to solve physiological problems and stimulate 50% of rose shoots to in vitro flowering.
Rose is one of the most important cut flower in the world. Rose micropropagation was used for production of clonal and disease-free plantlets and to breeding purposes. However, many important rose cultivars showed physiological disorders as early-leaf senescence and very low multiplication rate under in vitro conditions. Our hypothesis is that these symptoms were associated with high sensibility of these cultivars to ethylene accumulation on in vitro environment. The rose cv. Sena was in vitro cultivated under different concentrations of AgNO3 and two light sources, LED and fluorescent lamps, as a way to investigate in vitro similar symptoms to ethylene accumulation. AgNO3 at 1.0-2.0 mg L-1 solved the main in vitro physiological disorders observed in this rose cultivar. Also, AgNO3 stimulated induction of 50% of rose shoots to in vitro flowering at 2.0 mg L-1. Higher concentrations also resulted in flowering induction, but with imperfect flower development.
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