| 模拟酸雨对水稻种子发芽及幼苗生长的影响 |
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| 引用本文： | 闫荣玲,廖阳,郭平安.模拟酸雨对水稻种子发芽及幼苗生长的影响[J].湖南农业科学,2012(1):90-92. |
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| 作者姓名： | 闫荣玲 廖阳 郭平安 |
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| 作者单位： | 湖南科技学院生命科学与化学工程系,湖南永州,425100 |
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| 摘 要： | 通过模拟不同pH值(分别为3.0,4.0,5.0)的酸雨胁迫处理水稻(Oryza sativa)种子和幼苗,以了解酸雨对水稻种子萌发及幼苗生长的影响。结果显示:pH值5.0的模拟酸雨对水稻种子发芽率影响不明显,但pH值4.0和pH值3.0处理下种子萌发率显著下降;幼苗对不同程度的模拟酸雨胁迫均敏感,各生长指标包括叶长、苗高、植株鲜重、不定根数等被显著抑制,且随着pH降低,被抑制程度越甚。试验结果表明,模拟酸雨对水稻种子萌发和幼苗生长发育均有影响,且幼苗阶段较种子萌发阶段对酸雨的影响更为敏感。
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| 关 键 词： | 模拟酸雨 种子萌发 幼苗生长 水稻 |
Effects of Simulated Acid Rain on Seed Germination and Seedling Growth of Rice |
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| YAN Rong-ling
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LIAO Yang
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GUO Ping-an.Effects of Simulated Acid Rain on Seed Germination and Seedling Growth of Rice[J].Hunan Agricultural Sciences,2012(1):90-92. |
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| Authors: | YAN Rong-ling LIAO Yang GUO Ping-an |
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| Institution: | (Department of Life Sciences and Chemistry Engineering, Hunan University of Science and Engineering,Yongzhou 425100,PRC) |
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| Abstract: | The effects of simulated acid rain stress(pH 3.0,4.0,5.0,respectively) on seed germination and seedling growth of rice(Oryza sativa) were analyzed.The results showed that: there was little influence on the seed germination under the simulated acid rain with pH 5.0,but a significant inhibition effect exited under the simulated acid with pH 3.0 and PH 4.0;the rice seedling showed sensitive to all different simulated cid rain stresses,the growth indexes including leaf length,height and fresh weight of seedlings and number of adventitious roots were less than these cultured in the normal condition(CK),and the inhibition effect increased with decreasing pH of simulated acid rain.The results indicated that,simulated acid rain with different pH values all have effect on seed germination and seedling growth of rice,and the seedlings are more sensitive to the acid rain stress than seeds. |
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| Keywords: | simulated acid rain seed germination seedling growth rice |
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