Inheritance of resistance to Helicoverpa armigera of 3 kinds of transgenic Bt strains available in upland cotton in China

查看全文 作　　者：TANG [1]Canming;SUN [1]Jing;ZHU [1]Xiefei;GUO [1]Wangzhen;ZHANG [1]Tianzhen;SHEN [2]Jinliang;GAO [2]Congfen;ZHOU [2]Weijun;CHEN [3]Zhixian;GUO [4]Sandui

机构地区：[1]Key Laboratory of Crop Germplasm and Breeding,Ministry of Agriculture;[2]Department of Agronomy,Nanjing Agricultural University,Nanjing 210095,China;[2]Department of Plant Protection,Nanjing Agricultural University,Nanjing 210095,China;[3]Cotton Research Institute,Shanxi Academy of Agricultural Sciences,Yuncheng 044000,China;[4]Biotechnology Research Centre,Chinese Academy of Agricultural Sciences,Beijing 100081,China

出　　处：《Chinese Science Bulletin》索引2000年第45卷第4期,共5页

摘　　要：There are 3 kinds of transgenic Bt strains, Shanxi 94-24, Zhongxin 94, and R19, in upland cotton in China. Their transgenic Bt insect-resistance cultivars or hybrids have been developed and grown by farmers. Genetic studies indicate that the resistance of the 3 transgenic Bt cotton strains to Helicoverpa armigera is controlled by one pair of non-allelic dominant genes. Linkage relationship between the resistant genes of R19 and Shanxi 94-24 transgenic Bt strains shows that they may be inserted in the same chromosome. FT hybrids crossed among the 3 strains show that high levels of protection from feeding damage are the same as that of their parents. Therefore, there is no co-suppression phenomenon in many transgenic plants. The results presented here afford a fundamental reliance in developing transgenic Bt insect-resistant cultivars and exploiting the heterosis of hybrids in upland cotton. 关键词：UPLAND cotton TRANSGENIC BT plant inheritance insect-resistance HELICOVERPA armigera.

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Inheritance of resistance to Helicoverpa armigera of 3 kinds of transgenic Bt strains available in upland cotton in China

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