| 巩巧玲,冯佰利,高金锋,高小丽,王鹏科,柴岩.不同基因型荞麦生育后期叶片衰老特性研究[J].干旱地区农业研究,2008,(5):27~31 |
| 不同基因型荞麦生育后期叶片衰老特性研究 |
| Leaf senescence of different buckwheat genotypes at later growing stage |
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| DOI：10.7606/j.issn.1000-7601.2008.05.06 |
| 中文关键词: 荞麦 叶片衰老 保护酶活性 |
| 英文关键词:buckwheat leaf senescence protective enzyme activity |
| 基金项目:科技部科技支撑计划（2006BAD02B06）；国家高技术研究发展计划（863计划）项目（2006AA100201）；国家星火计划（2006EA850045）；西北农林科技大学植物遗传育种专项（05YZ017-1） |
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| 中文摘要: |
| 大田条件下试验观测甜荞西农9976和苦荞西农9920两种不同基因型荞麦开花至成熟期间主茎叶片衰老特性。结果表明，不同基因型荞麦叶片衰老进程存在着明显差异。与甜荞西农9976相比，苦荞西农9920生育后期功能叶片的叶绿素含量和可溶性蛋白质含量下降幅度小，SOD、CAT活性下降缓慢，MDA含量增加幅度小，叶片功能期长，衰老慢，有助于光合产物的积累。生产实践中，有效控制或延缓荞麦开花节叶片的衰老进程，延长叶片功能期，对提高荞麦产量有十分重要的作用。 |
| 英文摘要: |
| Two different buckwheat genotypes were used to study characteristics of the leaf senescence at flower-set caulis nodes from flowering to maturing under field conditions. A significant difference of senescence progresses between two genotypes was showed as: compared to Xinong9920 (Common buckwheat), Xinong9976 (Tartary buckwheat) has a slower reduction in the content of chlorophyll and soluble protein, and also in the activities of SOD and CAT, while a slower increasing MDA's content; These variations in leaf result in prolonging the function durations, delaying senescence，and contribute to accumulation of photosynthetic products. |
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