Phytotoxicity Differences Among 7 Winter Wheat Genotypes in China when Amended Selenate and Selenite
The culture experiments were conducted to study the effects of exogenous selenite and selenate on seed emergence and seedling grouth of 7 main winter wheat genotypes,in order to select the most sensitive indicator and provide the basis of Se-resistant wheat genotypes selection.The result showed that low concentration of Se(selenate＜8 mg· L-1,selenite＜20 mg·L-1) could promote the growth of wheat; and while higher concentration could inhibit the growth.The toxic effects of selenate were significantly higher than selenite on wheat at the same concentration(10 mg· L-1).The statistic analysis showed that the inhibition of shoot height and root length could be regarded as the sensitive indicators of selenite and selenate,respectively.Different wheat genotypes varieties had different tolerance:Xinong979,Xiaoyan22,and Lumai23 had high tolerations and could be extended as Se-rich wheat; Shaanmai159,Shongyou2018 have low tolerance and could be used as the sensitive species of Se pollution in soil.
国家科技期刊平台
NSTL
万方数据
维普
