核农学报2011，Vol.25Issue(5)：1010-1016,7.
镉对小麦旗叶叶绿素含量及籽粒产量的影响
EFFECTS OF Cd^2＋ ON CHLOROPHYII CONTENT IN FLAG LEAF AND GRAIN YIELD OF WHEATS
摘要
Abstract
A field experiment was conducted with wheat cultivars Luohan 6 and Yumai 18 to investigate the effects of Cd^2＋ stress on chlorophyll contents in flag leaves,flag leave area,thousand kernel weight,kernel filling velocity and yield of wheat.Results indicated that,under low Cd^2＋ stress（10mg/kg）,the average contents of chlorophyll a＋b of Luohan 6 reduced by 1.6%,however,its average area of flag leave and yield increased by 3.8% and 1.6%,respectively.At the same time,the average content of chlorophyll a＋b,area of flag leave and yield of Yumai 18 reduced 8.0%,9.6% and 5.4%.Under high Cd^2＋ stress（100mg/kg）,the average contents of chlorophyll a＋b,areas of flag leaves and yields of Luohan 6 and Yumai 18 reduced by 29.2% and 30.5%,6.3% and 17.4%,16.7% and 36.7%,respectively.The results demonstrated that Cd^2＋ restrained synthesis and accumulation of chlorophyll and its components.This study even showed that within a range of Cd^2＋ concentration could promote the growth of flag leaves,and it also had an equal positive effect on yield of wheat if the Cd^2＋ concentration in grains were not out of limit.The growth of flag leave and yield of wheat would be limited when Cd^2＋ concentration exceed that range.Overall,Yumai 18 bore more poison from Cd^2＋ than Luohan 6.关键词
小麦/镉/Cd^2＋耐性/叶绿素含量/叶面积/产量Key words
wheat/cadmium/Cd^2＋ tolerance/chlorophyll content/leaf area/yield分类
农业科技引用本文复制引用
朱志勇,郝玉芬,李友军,刘英杰,段有强,李强,郭甲..镉对小麦旗叶叶绿素含量及籽粒产量的影响[J].核农学报,2011,25(5):1010-1016,7.基金项目
河南省重点科技攻关项目支持 （）
