期刊文献+

变水处理条件下小麦幼苗的甜菜碱代谢与抗旱性的关系 预览 被引量:26

A Relationship between Betaine Metabolism and Drought Resistance of Winter Wheat Seedling under Changed Watering
在线阅读 免费下载
收藏 分享 导出
摘要 在缓慢土壤水分胁迫-复水的变水处理条件下,小麦幼苗地上部分相对含水量在80%-70%时,甜菜碱含量及甜菜碱醛脱氢酶活性最高,相对含水量大于80%或小于70%,甜菜碱的含量和甜菜碱醛脱氢酶活性都降低,并且两者变化是“同步”的。 Under the changed watering condition of progressive soil water stress-rewater, the betaine content and the betaine aldehyde dehydrogenase (BADH) activity were the highest while the tissue relative water content (RWC) of winter wheat seedling was in the range of 80 % to 70%. The betaine content and the BADH activity reduced when the seedling RWC was higher than 80% or lower than 70%. And the change of both was synchronous. Under the water stress winter wheat seedlings rapidly accumulated betaine. Betaine content of genotypes with drought resistance increased sixfold to eightfold, while susceptible genotypes fourfold. Accumulated betaine correlated to drought resistance, and play a main role in maintenance of osmotic balance of cytoplasm with cellular internal (vecuole) and external environment. The time that maximum betaine content appeared was earlier than proline and soluble sugar do during water stress. Genotypes that betaine content were higher and the maximum betaine content appeared later were drought resistance.
作者 景蕊莲 昌小平 Jing Ruilian Chang Xiaoping Hu Ronghai Dong Yuchen(Institute of Crop Germplasm Resources, Chinese Academy of Agricultural Sciences, Beijing, 100081)
出处 《作物学报》 CAS CSCD 北大核心 1999年第4期 494-498,共5页 Acta Agronomica Sinica
基金 国家攀登计划项目 9219-5-3
关键词 小麦 水分胁迫 甜菜碱 抗旱性 Winter wheat Water stress Betaine Drought resistance
  • 相关文献

参考文献13

二级参考文献27

共引文献168

同被引文献610

引证文献26

二级引证文献424

投稿分析
职称考试

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈