控制水稻叶片叶绿素含量及其离体叶片叶绿素降解速度相关的QTL定位(简报)

被引：7

作者：

左海龙

肖珂

张永娟

张俊芝

巩迎军

董彦君

机构：

[1] 上海师范大学生命与环境科学院

来源：

分子细胞生物学报 | 2007年 / 05期

关键词：

水稻; QTL; 离体叶片; 叶绿素含量; 降解速度;

D O I：

暂无

中图分类号：

S511 [稻];

学科分类号：

0901 ;

摘要：

<正>许多研究认为,在一定范围内,叶绿素含量与光合速率成正相关关系。叶绿素含量高的水稻叶片能延缓衰老。理论上推算,水稻叶片如果推迟1天衰老,可使水稻增产2%左右,而实际实验结果表明可增产1%左右。叶片早衰往往也是造成有些水稻品种结实率偏低、空秕率较高及产量降低的主要原因。叶片衰老是水稻发育过程中的生命现象,它是水稻在长期进化过程中形成的适应性。叶片衰老的显著特征之一是叶绿素含量下降,叶色褪绿变黄。叶绿素含量降低越快。表明叶片衰老越快。叶绿素含量下降可作为叶片衰老开始的标志。近年来,由于以分子连锁图谱为基础的数量性状基因研究发展迅速.水稻农艺和生理性状的QTL(quantitative trait loci,数量性状位点)定位已有大量报道。目前,以叶绿素含量为指标,在

引用

页码：346 / 350

页数：5

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