| 干旱胁迫对草地早熟禾抗旱生理的影响 |
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| 引用本文： | 赵玲,马向丽,邓祥升,罗富成,兰国相,吴开贤.干旱胁迫对草地早熟禾抗旱生理的影响[J].四川草原,2009(6):37-41. |
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| 作者姓名： | 赵玲 马向丽 邓祥升 罗富成 兰国相 吴开贤 |
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| 作者单位： | 云南农业大学草业科学系;云南省寻甸县畜牧局; |
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| 基金项目： | 云南农业大学青年基金“云南省抗旱节水型草地早熟禾地引进、筛选与推广应用(YNDKKY0711)”部分研究内容 |
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| 摘 要： | 以国内常用的6个草地早熟禾品种为材料,研究了干旱胁迫条件下叶片相对含水量、电导率、游离脯氨酸、丙二醛含量和叶绿素含量等生理指标对干旱胁迫的响应,探讨了各种生理变化与抗旱性的关系,并利用隶属函数法对抗旱性进行了综合评价。结果表明,6个草地早熟禾的相对含水量、叶绿素含量随水分胁迫时间的延长呈减少趋势,而相对电导率、游离脯氨酸和丙二醛含量呈增加趋势。通过隶属函数分析,6个草地早熟禾的抗旱性大小顺序为蓝鸟>解放者>午夜>优异>优美>肯塔基。
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| 关 键 词： | 草地早熟禾 抗旱性 脯氨酸含量 叶片含水量 |
Study on Physiological Responses of poa pratensis L.under Drought Stress |
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| ZHAO ling ,MA XIANG-li ,DENG Xiang-sheng ,LUO FU-cheng ,LAN GUO-xiang ,WU Kai-xian.Study on Physiological Responses of poa pratensis L.under Drought Stress[J].Journal of Sichuan Grassland,2009(6):37-41. |
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| Authors: | ZHAO ling MA XIANG-li DENG Xiang-sheng LUO FU-cheng LAN GUO-xiang WU Kai-xian |
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| Institution: | 1.Department of Pasture Science;Yunnan Agricultural University;Kunming 650201;China;2.Bureau of Animal Husbandry;Xundian County;Yunnan province;Xundian 655200;China |
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| Abstract: | Five physiological indices including relative water content of leaves,electrical conductivity rate, proline content,chlorophyll content and malondialdehyde content were measured under drought stress.Physiological changes to drought resistance capacity were comprehensively evaluated on different varieties of poa prtensis L.and discussed.The results showed that with the water stress time prolonged,the leaf relative water content and chlorophyll content of each species decreased,while the electrical conductivi... |
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| Keywords: | Poa pratensis L Drought resistance Content of free proline Relative water content of leaves |
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