Inheritance and segregation of exogenous genes in transgenic cotton

文献类型： 外文期刊

第一作者： BAO-HONG ZHANG

作者： BAO-HONG ZHANG;TENG-LONG GUO;QING-LIAN WANG

作者机构：

关键词： transgenic cotton;Bt gene;rfdA gene;inheritance;dominant gene

期刊名称：JOURNAL OF GENETICS （ 影响因子：1.166； 五年影响因子：1.212 ）

ISSN： 0022-1333

年卷期： 2000 年 79 卷 2 期

页码：

收录情况： SCI

摘要： Three transgenic cotton varieties (lines) were chosen for the study of inheritance and segregation of foreign Bt (Bacillus thuringiensis toxin) and tfdA genes in cotton. The transformed cotton varieties CCRI 30 and NewCott 33B expressing the Bt cryIA gene, and cotton line TFD expressing the tfdA gene were crossed with CCRI 19, CCRI 12 and Lumian 6. The results confirm inheritance and segregation of (i) the exogenous Bt gene in transgenic CCRI 30 and NewCott 33B, governing resistance to bollworm, and (ii) the exogenous tfdA gene in transgenic TED, governing resistance to the herbicide 2,4-D. Both resistance characters were governed by a single dominant nuclear gene, and were not affected by cytoplasm. Our data support the conclusion that foreign traits encoded by single genes are inherited and expressed in Mendelian fashion in cotton. Our results also indicate that a practical backcross breeding program could be used to develop cotton cultivars combining one or more resistance traits from foreign and native gene sources.

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