| PEG-6000对高羊茅萌发胁迫效应的研究(英文) |
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| 引用本文： | 兰剑,沈艳,谢应忠.PEG-6000对高羊茅萌发胁迫效应的研究(英文)[J].Agricultural Science&Technology,2011(7). |
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| 作者姓名： | 兰剑 沈艳 谢应忠 |
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| 作者单位： | 宁夏大学草业科学研究所;宁夏大学西北退化生态系统恢复与重建教育部重点实验室; |
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| 基金项目： | Supported by Scientific and Technological Program of Ningxia~~ |
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| 摘 要： | 目的]探讨干旱对高羊茅萌发的胁迫效应。方法]采用PEG-6000对14个高羊茅品种种子进行模拟干旱胁迫,研究干旱胁迫对高羊茅萌发的胁迫效应。结果]高羊茅14个品种的相对发芽率均随干旱胁迫的加剧而降低,且在水势为-0.6 Mpa时有明显的转折点;高羊茅种子萌发相对发芽率与干旱胁迫呈线性关系:Y=70.412X+103.11,r=0.988 8,耐旱适宜的水势范围为≥ -0.40 Mpa,半致死水势为-0.76 Mpa,致死水势为-1.33 Mpa。爱瑞3、交战Ⅱ和翠碧A是抗旱性较强的品种;贝克、强劲和爆发力是抗旱性较弱的品种。结论]为干旱地区牧草栽培和抗旱育种提供了理论依据。
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| 关 键 词： | PEG-6000 高羊茅 萌发 胁迫效应 |
Effects of Drought Stress on Germination of Tall Fescue |
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| LAN Jian,SHEN Yan,XIE Ying-zhong, .Grassl, Institute,Ningxia University,Yinchuan ,.Key Laboratory of Degraded Ecosystem Restoration , Rehabilitation in Northwest China,Ministry of Education.Effects of Drought Stress on Germination of Tall Fescue[J].农业科学与技术(英文版),2011(7). |
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| Authors: | LAN Jian SHEN Yan XIE Ying-zhong Grassl Institute Ningxia University Yinchuan Key Laboratory of Degraded Ecosystem Restoration Rehabilitation in Northwest China Ministry of Education |
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| Institution: | LAN Jian1,2,SHEN Yan1,XIE Ying-zhong1,2* 1.Grassland Institute,Ningxia University,Yinchuan 750021,2.Key Laboratory of Degraded Ecosystem Restoration and Rehabilitation in Northwest China,Ministry of Education |
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| Abstract: | Objective] The aim was to explore the effects of drought stress on germination of tall fescue.Method] Simulation drought experiment on 14 varieties of tall fescue seeds by PEG-6000 researched its germination effect under drought resistance.Result] The relative germination rate of all tall fescue varieties declined with intensifying drought stress level with the water potential of-0.6 Mpa as the turning point;the relative germination rate of tall fescue existed linear relationship with drought stress:Y = ... |
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| Keywords: | PEG-6000 Tall fescue Germination Stress effect |
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