%0 Journal Article
%T Studies on the nutrition element contents of transgenic Bt cotton hybrid leaves and its relationship with yield<br>Bt抗虫杂交棉叶片营养元素含量变化及其与产量的关系
%A LIU Hai-He
%A LI Rui-Lian
%A CHEN Jin-Xiang
%A <br>刘海荷
%A 李瑞莲
%A 陈金湘
%J 生态学报
%D 2006
%I 
%X The purpose of this study was to compare the nutrition element contents of leaves and analyze its relationship with the yield of transgenic Bt cotton hybrids F_1, F_2, F_3 of NZ_ 62 , H_ 64 , H_ 16 . The field experiments were conducted with plots at 13.4m~2, 4 rows, the plots were arranged in randomized complete block design with 4 replications. The field experiments were conducted in Changsha experimental base of Hunan Agricultural University in 2003 and 2004. The contents of N, P, K, B, Cu, Zn, Fe and Mn of the fourth and second leaves from the top of main cotton stems were analyzed at flowering and open boll stages. Experiment results showed that there were significant differences in the contents of N, K, B, Cu, Zn, Fe and Mn in the 4~ th leaves at flowering stage among different cotton hybrid combinations. All the element contents of NZ_ 62 plants was the highest, that of H_ 16 was the second and that of H_ 64 was the lowest, the difference was significant (p<5%). There was no significant difference in the element contents of the second leaves among the transgenic Bt cotton hybrids at open boll stage. There were significant differences among the contents of N, K, Cu, Zn, Fe, Mn and B in the 4th leaves of F_1, F_2 and F_3 generations at flowering stage (p<5%), and the contents of F_1 plants were higher than F_2 and F_3, and the difference between F_2 and F_3 was not significant. F_1 plants showed higher hybrid vigor to absorb nutrition elements than F_2 and F_3 plants. The decreased hybrid vigor of F_2 and F_3 were related with the decreasing of nutrition element contents. But there was no significant difference in the element contents of the second leaves of F_1, F_2 and F_3 plants at open boll stage(p<5%). The results of correlation analysis showed that the cotton yields, both seed cotton yield and lint yield, were significantly positive related to N and K contents of the hybrid leaves at flowering stage, but the relationship at open boll stage was not significant(p>5%). The positive correlation of cotton yields and the B contents in cotton plant leaves at flowering and open boll stages were highly significant(p<1%).
%K cotton
%K hybrid vigor
%K nutrition element
%K cotton yield<br>棉花
%K 杂种优势
%K 营养元素
%K 产量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=3EFAA737EFFD7E03&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=5D311CA918CA9A03&sid=9C5C90CDD348E92B&eid=BFBBE640BA5811AE&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=34