| 不同种和种源胡枝子的耐旱性差异研究 |
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| 引用本文： | 高琼,陈晓阳,杜金友,李伟,郝霞.不同种和种源胡枝子的耐旱性差异研究[J].北华大学学报(自然科学版),2005,6(3):257-260. |
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| 作者姓名： | 高琼 陈晓阳 杜金友 李伟 郝霞 |
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| 作者单位： | 北京林业大学,林木花卉遗传育种教育部重点实验室,北京,100083;北京林业大学,林木花卉遗传育种教育部重点实验室,北京,100083;北京林业大学,林木花卉遗传育种教育部重点实验室,北京,100083;北京林业大学,林木花卉遗传育种教育部重点实验室,北京,100083;北京林业大学,林木花卉遗传育种教育部重点实验室,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以3个胡枝子种为试材,分别以自然干旱和聚乙二醇(PEG-6000)溶液模拟干旱条件,对盆栽幼苗和离体枝条进行了含水率、脯氨酸含量及质膜透性的测定.试验结果表明,达乌里和短梗抗旱力较强,二色抗旱力较弱.其中,二色(冀)抗旱力相对较强,二色(美)、二色(辽)、二色(豫)较弱,质膜相对透性和脯氨酸积累宜作为幼苗抗旱力评价的指标.
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| 关 键 词： | 胡枝子 耐旱性 种 种源 聚乙二醇(PEG) |
| 文章编号： | 1009-4822(2005)03-0257-04 |
| 修稿时间： | 2005年3月2日 |
On Variation of Drought Tolerance in Species and Provenances of Lespedeza Michx |
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| GAO Qiong,CHEN Xiao-yang,DU Jin-you,LI Wei,HAO Xia.On Variation of Drought Tolerance in Species and Provenances of Lespedeza Michx[J].Journal of Beihua University(Natural Science),2005,6(3):257-260. |
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| Authors: | GAO Qiong CHEN Xiao-yang DU Jin-you LI Wei HAO Xia |
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| Abstract: | 3 species of Lespedeza are studied as experiment materials in the research. Gradual drought of soil and polyethylene glycol(PEG6000) are used to simulate the drought. The water content, the differential permeability as well as the proline accumulation were also determined. The result showed that, L.davurica and L.cyrtobotrya have strong drought resistance, while L.bicolor are not able to resist the drought powerfully. Among of L.bicolor, L.bicolor(Hebei) have strong resistance, while L.bicolor(Henan), L.bicolor(Liaoning), L.bicolor(America) have weak resistance. The differential permeability and the proline accumulation could be well used to evaluate the ability of drought resistance. |
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| Keywords: | Lespedeza Drought tolerance Species Provenance Polyethylene glycol(PEG) |
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