小麦与油菜种子萌发对酸雨胁迫的反应研究  

Effect of acid rain on germination of wheat and rape

作　　者：金进[1] 曾庆玲[2] 周青[2] 

机构地区：[1]苏州科技学院,苏州215009 [2]江南大学工业生物技术教育部重点实验室,无锡214036

出　　处：《中国生态农业学报》2005年第4期48-51,共4页Chinese Journal of Eco-Agriculture

基　　金：国家计委项目(GJX01100626);江苏省科技厅基金项目(BG2001045)资助

摘　　要：用pH2.0、2.5、3.0、3.5、4.0、5.0模拟酸雨处理小麦和油菜种子试验结果表明,pH2.0时小麦和油菜种子不发芽,pH2.5时只有小麦异状发芽,pH≥3.0时小麦和油菜种子发芽率、发芽势、发芽指数、活力指数均与pH值显著正相关,小麦异状发芽率则随pH值上升而降低。小麦和油菜的吸水值、呼吸速率、贮藏物质运转效率也与pH值显著正相关,小麦贮藏物质消耗率与pH值显著正相关,而油菜与pH值显著负相关;小麦和油菜的根、芽长抑制指数均与pH值显著负相关,且小麦抗酸雨胁迫能力强于油菜。Wheat and rape seeds were treated with simulated acid rain at pH 2.0, 2.5, 3.0, 3.5, 4.0 and 5.0 levels for 7 days in order to understand the effects of acid rain on seed germination of various acid-fast plant. The germination test shows that the seed germinations are absolutely inhibited at pH 2.0 for wheat and rape. Wheat seeds germinate abnormally at pH 2.5. When pH values above 3.0, the germination percentage, germination energy, germination index, vigor index of wheat and rape seeds increase with decreased acidity levels. In contrast, the percentage of abnormal germination of wheat decreases. The water absorption rate, respiratory rate and storage reserve transformation rate of wheat and rape seeds also increase with increased pH values. The storage loss of wheat increases with increased pH values but that of rape decreases. Inhibition indexes of shoot and root length of wheat and rape seeds decrease with increased pH values. Wheat has stronger fastness than rape under acid rain stress.

关 键 词：酸雨 小麦 油菜 种子萌发 油菜种子 酸雨胁迫 反应研究 种子发芽率 发芽指数 贮藏物质 

分 类 号：S565.4[农业科学—作物学] S512.101