| 野生狼尾草萌发期和幼苗期抗旱性的综合分析 |
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| 引用本文： | 蒋锦鹏,赵志丽,张志飞.野生狼尾草萌发期和幼苗期抗旱性的综合分析[J].草原与草坪,2014(2):39-44,50. |
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| 作者姓名： | 蒋锦鹏 赵志丽 张志飞 |
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| 作者单位： | 湖南农业大学草业科学研究所/湖南农业大学农学院草业科学系,湖南长沙410128 |
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| 基金项目： | 农业部畜牧总站“湖南牧草种质资源保护”项目资助 |
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| 摘 要： | 以5个不同生境的野生狼尾草种子为试验材料,萌发期采用10%,15%和20%浓度的PEG6000模拟干旱胁迫,幼苗生长期采用控水处理,通过对相对发芽率、相对发芽势、叶片相对电导率、叶片相对含水量等抗旱相关指标测量,综合评价野生狼尾草种子萌发期和幼苗期的抗旱性。结果表明:萌发期抗旱性较强的是ST、YJ2,抗旱性较弱的是FX、DY;ST和NS苗期的抗旱性较强,YJ2和FX抗旱性弱;萌发期和苗期的抗旱性综合排名为STNSYJ2DYFX。
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| 关 键 词： | 狼尾草 萌发期 幼苗期 抗旱性 |
Comprehensive analysis of drought resistance at germination and seedling stage in wild Pennisetum |
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| JIANG Jin-peng,ZHAO Zhi-li,ZHANG Zhi-fei.Comprehensive analysis of drought resistance at germination and seedling stage in wild Pennisetum[J].Grassland and Turf,2014(2):39-44,50. |
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| Authors: | JIANG Jin-peng ZHAO Zhi-li ZHANG Zhi-fei |
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| Institution: | (Grassland science Institute, Hunan Agricultural University , Changsha 410128) |
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| Abstract: | Five wild Pennisetum seeds in different habitats were used as materials in this study.Drought stress was induced by Polyethylene Glycol 6000 at the germination period,and water control treatment was used＆amp;nbsp;at the seedling growth period.The relative germination rate,relative germination potential,leaf relative electrical conductivity and leaf relative water content were measured.Drought resistance of these wild Pennisetum in germination and the seedling was comprehensive analyzed.The results showed that drought resistance of ST,YJ2 were higher,drought resistance of FX and DY were lower in the different Pennisetum at the germination period;Drought resistance of ST and NS were higher,drought resistance of YJ2 and FX were lower in the different Pennisetum at the seedling growth period.Comprehensive ranking of drought resistance for Pennisetum at the germination and seedling stage was ST〉NS〉YJ2〉DY〉FX. |
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| Keywords: | Pennisetum germination period seedling stage drought resistance |
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