棉 花 学 报 Cotton Science     2005,17(4):195-200

 

陆地棉组织培养体细胞胚胎发生技术改进
迟吉娜,马峙英,韩改英,李喜焕,王彦霞
(河北农业大学,河北省作物种质资源重点实验室, 保定 071001)

摘要:以珂字312和冀无2031为材料,对陆地棉体细胞胚胎发生技术进行了改进,建立了一套培养程序。在悬浮培养中,加入50 g·L-1的PEG6000的液体培养基可提高悬浮培养后正常胚的萌发率,对胚
状体萌发有促进作用。悬浮培养后的胚性愈伤组织继代到含有80~160 mg·L-1 PEG6000的胚性愈伤组织萌发培养基中,暗培养1~2周,胚性愈伤组织明显疏松;在光照条件下继续培养两周可形成大量绿色萌发胚。加入500 mg·L-1 的CH及NH4NO3减半、KNO3加倍的培养基利于胚状体的分化,且异常胚的比例低。
关键词:陆地棉;体细胞胚胎; PEG
中图分类号:S562.035.03           文献标识码:A
文章编号:1002-7807(2005)04-0195-06    [全文,3159KB]

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