棉 花 学 报      Cotton Science   2007，19(6)：450-454

Variations of Main Agronomic Traits in Transgenenic Cotton （Gossypium hirsutum L.） Lines Transformed by Pollen-tube Pathway Method
LIU Dong-mei¹，WU Zhi-xia¹，LIU Chuan-liang¹，LI Cheng-wei²，LI Fu-guang^1*
(1.Transgene Group of Cotton Research Institute，Chinese Acdamy of Agricultural Science，Key L aboratory of Cotton Genetic Improvement，MOA，Anyang，Henan 455000，China；2.Department of Life Sciences，Shangqiu Teaching College，Shangqiu，Henan 476600，China)

Abstract：Variations of main agronomic traits in selected lines from transgenic cotton obtained by transformed insect resistant genes into cotton line Zhong 99668 through pollen tube pathway method were investigated. Introducing of foreign genes resulted in stable hereditable non-target-gene variation of agronomic characteristics in the descents. The analysis of T₅ generation of transgenic lines revealed that variations occurred in many agronomic traits. Most of the transgenic lines showed an increasing trend for the yield，the number of plant branches and rolls. However，the reverse trend was also observed. The leaves became smaller and the generational period became shorter. A lot of variations in fiber qualities were also found such as fiber strength，micronaire value fiber length，fiber index，degree of uniformity etc.
Key words：cotton（Gossypium hirsutum L.）；pollen-tube pathway；transgenenic；agronomic traits；ariations
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