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转基因水稻高世代农艺性状的表现

DOI: 10.7668/hbnxb.2008.01.004, PP. 15-21

Keywords: 粳稻,转基因,SCK基因,bar基因,GNA基因,hyg基因,抗性,农艺性状

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Abstract:

以转SCK基因和bar基因粳稻恢复系超优1号和转GNA基因和hyg基因粳稻保持系早花二号自交高代(恢复系T5,T6,保持系T4,T5)材料为试材,进行抗性筛选鉴定和农艺性状考察。结果表明:转基因恢复系表现高抗除草剂,对二化螟呈不同程度抗性;保持系表现高抗潮霉素,大部分株系低抗稻飞虱,个别高抗褐飞虱、白背飞虱,田间表现高抗条纹叶枯病;转基因不育系表现高抗潮霉素;外源基因导入粳稻恢复系和保持系并在高代稳定表达。转基因恢复系生育期、株高、穗长、穗颈节等性状有不同程度变异;保持系株高、穗型变异较大。转基因恢复系与转基因不育系配制的多元转基因杂交组合F1表现高抗除草剂和潮霉素,其他农艺性状表现与对照(非转基因组合)基本一致。对转基因水稻的安全释放进行了探讨。

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