Relationships between endogenous hormonal content and direct somatic embryogenesis in Watermelon (Citrullus lanatus) cotyledons

文献类型： 外文期刊

第一作者： Zhang, Hui Jun

作者： Zhang, Hui Jun;Wang, Qing;Wang, Qing

作者机构：

关键词： Regeneration;endogenous;phytohormones;in vitro culture;watermelon

期刊名称：RESEARCH JOURNAL OF BIOTECHNOLOGY （ 影响因子：0.233； 五年影响因子：0.252 ）

ISSN： 0973-6263

年卷期： 2015 年 10 卷 2 期

页码：

收录情况： SCI

摘要： Cotyledons of Watermelon (Citrullus lanatus) were cultured in vitro on medium deprived of plant growth regulators. Inbred lines varying in their embryogenic capacity were studied after 90 days in culture media. Endogenous levels of indole-3-acetic acid (IAA), abscisic acid (ABA) and trans-zeatin riboside (ZR) were analyzed in embryogenic cotyledons. Significant differences were observed in total ABA, IAA, ZR, concentrations of the embryogenic cotyledons. On the contrary, lower Z and ACC contents and also a reduced balance between Z and IAA levels were related with the embryogenic capacity of the cotyledons. These results suggest that the difference in somatic embryo formation capacity observed between embryogenic cotyledons is related to their endogenous Z contents and that the endogenous hormonal balance between Z and IAA is an important index defining the embryogenic potential in peach cotyledons.

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