摘要
将野生大豆幼苗在不同浓度盐溶液中进行水培,在第5天测定其电导率、MDA含量、SOD、CAT和POD活性,第14天测定其株高、鲜重的变化,并记录根系和整个植株的生长情况。结果表明,随着盐浓度的增大,野生大豆的电导率、MDA含量、SOD、CAT、POD活性均先上升后下降,而株高、鲜重、根长、侧根数及存活率均呈下降趋势。在较低浓度(0～0.4%NaCl)盐胁迫时,相关指标变化不显著;在0.8%和1.0%NaCl胁迫下,野生大豆幼苗的存活率几乎为零。结果证明桐柏县野生大豆幼苗具有一定的耐盐性。
The seedlings of wild soybean were solution cultured under 0-1.0% NaCl,and their physiological and growth indexes were determined.With the increasing of NaCl concentration,the electrical conductivity,MDA content,SOD,CAT and POD activity increased first then decreased,while plant height,fresh weight,root length,lateral root number,and survival rates reduced.The changing degree of above indexes had no significant difference under 0-0.4% NaCl.The soybean seedlings could hardly survival under 0.8% and 1.0% NaCl.Results suggest that wild soybean seedling in Tongbai county had certain salt tolerance.
出处
《大豆科学》
CAS
CSCD
北大核心
2012年第6期920-923,共4页
Soybean Science
基金
河南省科技厅项目(102102110159)
河南省教育厅项目(2010A180018)
关键词
野生大豆
盐胁迫
幼苗
耐盐性
Glycine soja
Salt stress
Seedling
Salt tolerance
