农杆菌介导大豆未成熟子叶节遗传转化及转录因子GmPTF1在大豆中的表达

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以冀豆12的未成熟种子作为外植体,研究了6-BA浓度、取材时间、发育程度对不定芽诱导的影响。试验结果表明,大豆未成熟胚子叶节的最优再生条件是当豆荚种子发育到最大(开花后60-66d),豆荚开始由绿变黄时,在6-BA浓度在1.0~1.5mg/L条件诱导下,出芽率最高,达到了96.67%~100%,子叶节平均出芽数为1.6~2.57个。以冀豆7的未成熟子叶节为外植体做遗传转化研究,探讨了外植体的低温预处理、共培养温度、共培养基pH值对转化效率的影响。结果表明,在开花60d左右,籽粒发育到最大,产
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