| 7种鹅观草属植物苗期干旱胁迫的生理评价 |
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| 引用本文： | 常雪刚,徐柱,易津,闫伟红.7种鹅观草属植物苗期干旱胁迫的生理评价[J].中国草地学报,2011,33(4). |
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| 作者姓名： | 常雪刚 徐柱 易津 闫伟红 |
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| 作者单位： | 1. 内蒙古农业大学农学院,内蒙古呼和浩特,010019
2. 中国农业科学院草原研究所/农业部草原资源与生态重点开放实验室,内蒙古呼和浩特,010010 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项“八种优异禾草种质资源评价研究”(1610332011006);中央级公益性科研院所基本科研业务费专项(中国农业科学院草原研究所)“锡林郭勒典型草原生态生产功能区评价与适应性管理模式研究”(2010-Z-3) |
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| 摘 要： | 利用盆栽模拟土壤干旱法,对鹅观草属7种植物幼苗在连续干旱胁迫下的生理生化特征进行研究,综合评价7种植物的抗旱性,筛选抗旱品种。结果表明:随干旱胁迫天数的增加,土壤相对体积含水量、叶片相对含水量和叶绿素含量显著降低(P<0.05),脯氨酸含量、相对电导率、丙二醛(MDA)含量都显著增加(P<0.05);过氧化物酶(POD)和超氧化物歧化酶(SOD)活性先上升,后不同材料变化各异。相关分析表明,除了SOD活性,其他指标之间都存在显著或极显著相关。运用隶属函数法进行综合评价,7种植物的抗旱性顺序为:黑药鹅观草>垂穗鹅观草>肃草>纤毛鹅观草>多变鹅观草>岷山鹅观草>直穗鹅观草。
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| 关 键 词： | 鹅观草属 苗期 干旱胁迫 隶属函数 |
Physiological Evaluation of Seven Roegneria Species to Drought Stress at Seedling Stage |
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| CHANG Xue-gang,XU Zhu,YI Jin,YAN Wei-hong.Physiological Evaluation of Seven Roegneria Species to Drought Stress at Seedling Stage[J].Chinese Journal of Grassland,2011,33(4). |
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| Authors: | CHANG Xue-gang XU Zhu YI Jin YAN Wei-hong |
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| Institution: | CHANG Xue-gang1,XU Zhu2,YI Jin1,YAN Wei-hong2(1.Agricultural College,Inner Mongolia Agricultural University,Hohhot 010019,China,2.Grassland Research Institute of CAAS/Key Laboratory of Grassland Resource and Ecology of Ministry of Agriculture,Hohhot 010010,China) |
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| Abstract: | The physiological and biochemical characteristics of 7 Roegneria plants to drought resistance were studied with potted plant at seedling stage under successive drought stress to simulate soil drought condition,and their drought-resistances were evaluated comprehensively to select cultivar of drought resistance.The results showed that with the days of drought stress increased,soil relative volumetric water content,leaf relative water content and chlorophyll content were significantly decreased(P <0.05),proli... |
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| Keywords: | Roegneria Seedling Drought stress Subordinate function |
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