| 刘鹏涛,冯佰利,高金锋,高小丽,王鹏科,谷书斌.干旱条件下冬小麦籽粒灌浆期冠层叶片衰老特性研究[J].干旱地区农业研究,2008,(6):129~132 |
| 干旱条件下冬小麦籽粒灌浆期冠层叶片衰老特性研究 |
| Canopy leaf aging at grain filling stage of winter wheat under drought condition |
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| DOI：10.7606/j.issn.1000-7601.2008.06.25 |
| 中文关键词: 冬小麦 灌浆期 冠层叶片 衰老生理 |
| 英文关键词:winter wheat grain filling stage canopy leaf senescence physiology |
| 基金项目:国家高技术研究发展计划(863计划)项目(2006AA100201)； 国家自然科学基金重大项目(30230230) |
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| 中文摘要: |
| 以冬小麦品种西农961、小偃6号、陕229为供试材料,研究了干旱条件下冬小麦不同品种冠层叶片衰老特性。试验结果表明,籽粒灌浆期冬小麦不同品种叶片衰老特性存在差异。与西农961和小偃6号相比较,陕229的叶绿素含量较高且降低趋势最缓慢;3个品种在开花后可溶性蛋白含量均呈现先升高后降低的趋势,在开花后第12 d达到最大值,其中陕229的可溶性蛋白质含量在灌浆中期降低速率较为缓慢;陕229的过氧化氢酶(CAT)活性在灌浆后期较高,降低速度慢,持续时间长;整个灌浆期间陕229的丙二醛含量最少,膜质过氧化程度最低,叶片衰老程度最慢。 |
| 英文摘要: |
| In three varieties of Xinong 961,Xiaoyan 6 and Shan 229,canopy leaf senescence and reactive oxygen species metabolism characteristics of different wheat cultivars under drought conditions were studied.The test result indicated that leaf senescence and reactive oxygen species metabolism at grain filling stage of different wheat cultivars were different.With Xinong 961 and Xiaoyan 6,chlorophyll content of Shan 229 was the highest and had the slowest decreasing.After flowering,soluble protein content of three varieties were increased at first and reaching the maximum at the 12th day from flowering,then falling down.The reducing speed of them had no significant difference.CAT activity of Shan 229 was the highest at anaphase of filling stage,and had the slowest reducing speed and the longest duration time.MDA content of Shan 229 is the least.It means Shan 229 has the weakest membrane lipid peroxidation and the slowest leaf senescence. |
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