长江中游棉区转CryⅠ A基因棉花对棉铃虫的抗性评价  

Resistance Evaluation of Bt Transgenic Cotton to Cotton Bollworm, Helicoverpa armigera, in mid-Changjiang River Valley

作　　者：黄民松[1] 万鹏[1] 吴孔明[2] 吴金萍[1] 樊孝贤[1] 李明福 

机构地区：[1]湖北省农业科学院植保土肥所,武汉430064 [2]中国农业科学院植物保护研究所,北京100094 [3]湖北省天门市植保站,天门431700

出　　处：《棉花学报》2002年第5期283-286,共4页Cotton Science

基　　金：科技部 8 6 3计划资助 ( 2 0 0 1A A2 12 2 71)

摘　　要：对转 Bt棉 GK-19和转 Bt美棉 BG-15 60进行了室内生测和大田调查。结果显示 ,室内生测两Bt棉品系对棉铃虫的抗性随组织器官和生育期的不同而变化。总体上 ,繁殖器官的抗性效率大于其它器官 ,7月份的抗性水平显著高于 8月和 9月 ;田间调查 ,在对照田第 3和 4代棉铃虫高峰虫量百株 14头和 2 8头密度下 ,Bt棉 GK-19和 BG-15 60对第 3和 4代棉铃虫的控制效果分别为 86.2 1%、87.89%、93 .10 %和 92 .19%。表明长江中游棉区转 Cry1A基因棉花对棉铃虫的田间种群数量亦有很强的控制作用。Resistance of two Bt transgenic cotton lines (GK 19 and BG 1560) to cotton bollworm (Helicoverpa armigera) was assessed through bioassay and field investigation. The research results indicated that there were significant differences of resistance levels among various organs and developmental stages of both Bt transgenic cotton lines by bioassay. In general, resistance level of reproduction organs were higher than leaves in two lines, and it decreased gradually as cotton growth from July to September;The field trial showed that control efficiencies to the third and fourth generations of cotton bollworm on GK 19 and BG 1560 were 86.21% and 87.89%, 93.10% and 92.19%,respectively, while peak densities were 14 and 28 larvae per hundred plants in conventional cotton field. It is suggested that both GK 19 and BG 1560 possess high potential for control of cotton bollworm in cotton planting area alone mid Changjiang River Valley.

关 键 词：长江中游棉区 CryIA基因 抗性评价 BT棉 棉铃虫 抗虫性 转基因棉花 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治]