农业环境科学学报Issue(8)：1485-1492,8.DOI:10.11654/jaes.2014.08.004
铝胁迫对西瓜幼苗生长及生理特性的影响
Effects of Aluminum Stress on Growth and Physiological Characteristics of Watermelon Seedlings
摘要
Abstract
Aluminum(Al)phytotoxicity is an important factor influencing plant production in acid soils. In the present study, seedlings of four watermelon varieties, chaotiandileiwang(DL), zaojia84-24(ZJ), zaomiwang(ZM)and zaochunhongyu(HY), were used to investigate their growth and physiological characteristics under different Al concentrations(0, 250, 500, 1000, 1500μmol·L-1). The inhibitory effects of Al on root length, root vigor and dry weight were greatest for ZM, followed by ZJ and DL, and the least for HY, in which no influences were observed. Thus ZM was more sensitive to Al than HY. Aluminum stress increased the plasma membrane permeability and MDA content in ZM and HY leaves. At Al3+≤1000μmol·L-1, the breakage of HY membrane system was recovered at a certain level with extension of the treatment time. In addition, Pro content, SOD and POD activities were also increased; while CAT activity was almost not affected by Al. These results show that Al-resistant HY has a better physiological mechanism to respond to Al stress than ZM does, and the Pro content and SOD and POD activities are closely related to Al-tolerant ability of watermelon.关键词
铝胁迫/西瓜/幼苗生长/生理特性Key words
aluminum stress/watermelon/seedling growth/physiological characteristics分类
资源环境引用本文复制引用
贾松涛,郑阳霞,邱爽,张伟伟..铝胁迫对西瓜幼苗生长及生理特性的影响[J].农业环境科学学报,2014,(8):1485-1492,8.基金项目
四川省教育厅重点项目 （）
