| 蓝茎冰草种子劣变过程中生理生化变化 |
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| 引用本文： | 李玉荣,韩建国,孙彦,任卫波,王小山.蓝茎冰草种子劣变过程中生理生化变化[J].种子,2007,26(2):10-13. |
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| 作者姓名： | 李玉荣 韩建国 孙彦 任卫波 王小山 |
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| 作者单位： | 中国农业大学草地研究所/农业部牧草与草坪草种子质量监督检验测试中心,北京,100094 |
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| 基金项目： | 农业部重点科研项目;北京市重点学科建设项目;中国科学院上海硅酸盐研究所资助项目 |
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| 摘 要： | 研究蓝茎冰草（Pascopyrum smithii）种子在自然和人工老化过程中生理生化变化。结果表明：在自然和人工老化过程中，发芽率和活力指数下降，活力指数的变化先于发芽率，是反映种子质量的敏感指标；蓝茎冰草种子电导率与种子生活力及活力正相关；氨基酸泄漏与种子中游离氨基酸含量正相关，不反映种子膜的透性；蓝茎冰草种子中可溶性蛋白质含量随着人工老化而上升。
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| 关 键 词： | 蓝茎冰草种子 种子劣变 生理生化变化 |
| 文章编号： | 1001-4705（2007）02-0010-04 |
| 修稿时间： | 2006-10-27 |
Physiological and Biochemical Changes in Rosana Western Wheatgrass Seed During Seed Deterioration |
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| LI Yu-rong,HAN Jian-guo,SUN Yan,REN Wei-bo,WANG Xiao-shan.Physiological and Biochemical Changes in Rosana Western Wheatgrass Seed During Seed Deterioration[J].Seed,2007,26(2):10-13. |
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| Authors: | LI Yu-rong HAN Jian-guo SUN Yan REN Wei-bo WANG Xiao-shan |
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| Institution: | Institute of Grassland Science CAU, Forage and Turfgrass seed Tesing Centre, MOA, Beijing 100094,China |
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| Abstract: | A study on deterioration in Rosana western wheatgrass seed was condncted to analyze some of the physiological and biochemical changes produced under natural and accelerated ageing conditions. The germination rate, vigor index decreased as seed ageing. Vigor index changes significantly earlier than germination rate, Vigor index provided more sensitive parameters in assessing seed quality of Rosana western wheatgrass seed. The correlation studies revealed that electrical conductivity was found to bepositively and significantly correlated with viability and vigor of seeds. Leaching of amino acid was positively related to amino acid content of dry seeds. No relationship between leaching of amino acid and the permeability of membranes during accelerated aging was established. Soluble protein contents in Rosana western wheatgrass increased with seed aging. |
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| Keywords: | western wheatgrass seed seed deterioration physiological and biochemical change |
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