银叶金合欢组织培养研究

Guangdong Forestry Science and Technology(2015)

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Abstract
为建立银叶金合欢(Acacia podalyriifolia)组培快繁技术体系,对其外植体类型与灭菌处理方法以及不定芽诱导、增殖和生根培养基进行了优化筛选.结果表明,组培最适外植体为半木质化枝条上部;灭菌处理方式以75%酒精处理10 s,0.1%升汞处理5min为宜,其污染率为38.67%,诱导率达54.33%;最适宜诱导培养基为MS+6-BA 0.5 mg·L-1+IBA 0.01 mg·L-1+ GA30.3 mg·L-1,诱导率为64%;最佳增殖培养基为MS+6-BA 0.6 mg·L-1+ IBA 0.05 mg·L-1+ GA3 0.1 mg·L-1,增殖系数为3.44;最佳生根培养基为1/4 MS+NAA 0.2 mg·L-1+ IBA 0.8 mg·L-1,生根率为67.1%;移栽基质为黄心土+沙(V黄心土:V沙=2:1),移栽成活率可达85%以上.
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