2024年6月25日 星期二
‘孔府酥脆’枣试管苗离体叶片不定梢诱导和再生
Induction and regeneration of adventitious shoot from in vitro leaves of Zizyphus jujube ‘ Kongfusucui’plantlet
2011年 第20卷 第1期 页码[83-85]    下载全文[0.7MB]  
Abstract

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 Ⅰfor four weeks then cultured on medium Ⅱfor three weeks) is significantly higher than that by one-step culture method (cultured continuously on medium Ⅰfor seven weeks). Phytohormone proportion in medium Ⅰhas 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 Ⅰleads 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. jujube ‘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.

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
Key wordsZizyphus jujuba ‘Kongfusucui’; in vitro leaf; adventitious shoot induction; plantlet regeneration; two-step culture method
作者孙清荣, 孙洪雁, 周广芳
所在单位山东省果树研究所, 山东泰安271000
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基金项目国家林业科技支撑计划项目(2008BAD92B03); 山东省农业良种工程项目(2008LZ010 和2009LZ010); 山东省农业科学院博士科研启动基金项目(2007YBS004); 泰安市科技发展计划项目(20093021)