‘孔府酥脆’枣试管苗离体叶片不定梢诱导和再生

文献类型： 中文期刊

第一作者： 孙清荣

作者： 孙清荣;孙洪雁;周广芳

作者机构：

关键词： ‘孔府酥脆’枣;离体叶片;不定梢诱导;植株再生;两步培养法

期刊名称： 植物资源与环境学报

ISSN： 1674-7895

年卷期： 2011 年 20 卷 01 期

页码： 83-85

收录情况： CSCD

摘要： Using in vitro leaves of Zizyphus jujuba ‘Kongfusucui’ plantlet as explants,effects of culture method,phytohormone proportion and culture time on induction rate of adventitious shoot from leaves and effects of sucrose concentrations in rooting media on rooting of adventitious shoot were studied.The results show that induction rate of adventitious shoot by two-step culture method(firstly cultured on medium Ⅰ for four weeks then cultured on medium Ⅱ for three weeks) is significantly higher than that by one-step culture method(cultured continuously on medium Ⅰ for seven weeks).Phytohormone proportion in medium Ⅰ has an obviously influence on induction rate of adventitious shoot,which gradually increases with increasing of TDZ concentration in medium Ⅰ.And adding 1.0 mg·L-1 TDZ in medium Ⅰ leads to induction rate with above 80%.With culture time prolonging(cultured for 1,2,3 or 4 weeks on medium Ⅰ,respectively),induction rate increases gradually.Sucrose concentration has a significant effect on rooting of adventitious shoot,sucrose with higher concentration(30 g·L-1) is beneficial to rooting.According to induction rate and growth status of adventitious shoot,it is determined that optimal culture method of adventitious shoot induction from Z.jujuba 'Kongfusucui' leaves is two-step culture method,that is,leaves firstly cultured on WPM medium containing 1.0 mg·L-1 TDZ and 0.5 mg·L-1 IAA for four weeks,and then cultured on WPM medium containing 0.5 mg·L-1 IAA and 1.0 mg·L-1 GA3 till adventitious shoot produced.

分类号： S661.2

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