中国水稻科学2011，Vol.25Issue(6)：639-644,6.DOI:10.3969/j.issn.1001-7216.2011.06.011
辽宁省杂草稻幼苗对低温胁迫的生理响应
Physiological Responses of Weedy Rice to Cold Stress at Seedling Stage in Liaoning Province,China
摘要
Abstract
Physiological responses of weedy rice to cold stress were investigated with weedy rice WR03-45 and WR03-26 as materials and Lijiangxintuanheigu as control. The fluctuations of physiological indexes of leaves and roots of weedy rice and cultivated rice at 5 'C in an artificial climate chamber were investigated. The physiological indexes of leaves of weedy rice and cultivated rice followed a similar trend except the contents of chlorophyll and carotenoids under cold stress. The change of thiobarbituric acid reactive substances(TBARS) and proline contents of weedy rice differed from cultivated rice, but it is otherwise for the change of electrolyte leakage and soluble sugar content in roots. Photosynthetic system in weedy rice WR03-45 and Lijiangxintuanheigu was less damaged under chilling stress. Due to less injury and membrane lipid peroxidation, the cell membrane of weedy rice WR03-45 remained intact. The soluble sugar and proline contents of WR03-45 were higher than those of Lijiangxintuanheigu under chilling stress. It indicated that weedy rice WR03-45 was less injured under cold stress because of higher cold tolerance at the seedling stage .关键词
低温胁迫/杂草稻/苗期/生理响应Key words
cold stress/ weedy rice/ seedling stage/ physiological response分类
农业科技引用本文复制引用
苗微,王国骄,马殿荣,王嘉宇,徐正进,陈温福..辽宁省杂草稻幼苗对低温胁迫的生理响应[J].中国水稻科学,2011,25(6):639-644,6.基金项目
辽宁省自然科学基金资助项目(20102192) （20102192）
水稻生物学国家重点实验室开放课题(090404) （090404）
现代农业产业技术体系建设专项 （）
沈阳农业大学国家自然科学基金启动基金. （）
