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魏霞 李云峰 向佳 凌英华 杨正林 何光华 赵芳明
西南农业学报, 2015, Volume: 28, Issue: 3Journal Article
本研究选用导入高粱DNA的水稻变异系R21、受体缙恢1号及巴西陆稻为实验材料,采用裂区试验设计,分析在干旱胁迫下水稻变异系R21的生理特性。结果表明:经12 d干旱胁迫后,各品种的脯氨酸、SOD和POD活性及MDA含量均显著提高,叶绿素a、叶绿素b和总叶绿素含量及可溶性蛋白含量显著降低。耐旱品种如R21和巴西陆稻比不耐旱品种缙恢1号具有较高的脯氨酸含量、SOD活性和POD活性,以及较低的可溶性蛋白含量和MDA含量。受到12 d干旱胁迫后,耐旱品种R21和巴西陆稻的脯氨酸含量、SOD活性和POD活性上升幅度显著高于缙恢1号,可溶性蛋白含量下降幅度和MDA含量上升幅度显著小于缙恢1号。本研究对水稻耐旱品种培育具有一定实践指导意义。
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