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大豆科学  2014 

转cry6Aa2m基因大豆遗传稳定性分析及农艺性状调查

DOI: 10.11867/j.issn.1000-9841.2014.05.0629, PP. 629-633

Keywords: 大豆,抗虫基因cryAam,遗传稳定性,农艺性状

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Abstract:

以前期获得的转抗虫基因cry6Aa2m大豆T4代植株4个株系为材料,采用PCR及RT-PCR检测方法进行了外源基因遗传稳定性及表达情况分析。并以受体品种(东农50)为对照,进行了产量性状、形态性状、品质性状及环境适应能力等农艺性状的调查。结果表明:cry6Aa2m基因能够在T4代转基因植株中遗传并表达;在产量性状上,除转基因株系DpC6b7单株结荚数显著低于对照外,其余3个株系的百粒重和单株结荚数与对照相比无显著差异;在形态性状上,除转基因株系DpC6b37株高显著低于对照外,其余株系的生育期、结荚习性、花色、叶形与对照也均无显著差异;在品质性状上,与对照相比,DpC6b37粗蛋白含量高2%,粗脂肪含量高5%。株系DpC6b7则粗蛋白含量高4%,粗脂肪含量低1%;在环境适应能力方面,转基因株系种子萌发率、落粒率、种子休眠期、杂草竞争性与对照均无显著差异。综合结果表明cry6Aa2m基因能够稳定遗传并表达,其中株系DpC6b4和DpC6b8所调查的农艺性状均不劣于受体品种。

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