| 扁蓿豆不同种质材料种子萌发期抗旱性比较 |
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| 引用本文： | 赵丽丽,王照兰,杜建材,李青丰,王普昶. 扁蓿豆不同种质材料种子萌发期抗旱性比较[J]. 种子, 2007, 26(12): 13-16 |
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| 作者姓名： | 赵丽丽 王照兰 杜建材 李青丰 王普昶 |
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| 作者单位： | 1. 内蒙古农业大学生态环境学院,呼和浩特,010019
2. 中国农业科学院草原研究所,内蒙古,呼和浩特,010010 |
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| 基金项目： | 农业结构调整技术专项基金;国家重点基础研究发展计划(973计划);农业部重点实验室基金 |
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| 摘 要： | 采用5个PEG渗透势梯度模拟干旱胁迫,以黄花苜蓿作对照,探讨了4份扁蓿豆种质材料种子萌发期的抗旱性。通过对种子相对发芽率、相对活力指数和半致死渗透胁迫强度3项指标的综合分析,扁蓿豆种质材料在种子萌发期的抗旱性高于黄花苜蓿,4份扁蓿豆种质材料抗旱性大小顺序为:材料4>材料1>材料3>材料2。其半致死渗透胁迫强度分别为:-1.30MPa、-1.03MPa、-0.85MPa、-0.78MPa。
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| 关 键 词： | 扁蓿豆 种子萌发 抗旱性 |
| 文章编号： | 1101-4705（2007）12-0013-04 |
| 收稿时间： | 2007-08-28 |
| 修稿时间： | 2007-08-28 |
Comparison on Drought Resistances of Several Melilotoides ruthenica Materials at Seed Germination and Seedling Stage |
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| ZHAO Li-li,WANG Zhao-lan,DU Jian-cai,LI Qing-feng,WANG Pu-chang. Comparison on Drought Resistances of Several Melilotoides ruthenica Materials at Seed Germination and Seedling Stage[J]. Seed, 2007, 26(12): 13-16 |
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| Authors: | ZHAO Li-li WANG Zhao-lan DU Jian-cai LI Qing-feng WANG Pu-chang |
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| Abstract: | Drought resistances of four Melilotoides ruthenica materials were evaluated,using Medicago falcata as a ck.Seeds were exposed to five levels of osmotic stress created by PEG-6000.Based on relative germination rate,relative vigor index and half-lethal osmotic potential,It was found that drought resistance of Melilotoides ruthenica was higher than that of Medicago falcata. The drought-resistance ability of Melilotoides ruthenica materials was:material 4>material 1>material 3>material 2.Their half-lethal osmotic potentials were -1.30 MPa,-1.03 MPa,-0.85 MPa ,-0.78 MPa,respectively. |
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| Keywords: | PEG |
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