南方农业学报2011，Vol.42Issue(1)：16-21,6.
优质籼稻花后干物质积累与流转及籽粒灌浆特征
Post-anthesis accumulation and remobilization of dry matter and grain growth characteristics in high quality indica rice
摘要
Abstract
[Objective]Field experiments were conducted to investigate the post-anthesis accumulation and remobilization of dry matter and grain growth characteristics in high quality indica rice. [Method]Three indica rice varieties, viz.,Baguixiang, Guihuazhan and Zhengui'ai (CK) were used in field experiments during the early and late cropping seasons in 2007. [Results]High-quality rice varieties Baguixiang and Guihuazhan showed higher dry weight of leaf and stem in single shoot, as well as higher dry matter translocation ratio and rates in leaf after heading stage. Little difference was observed in dry matter remobilization in stem between the high-quality rice and the control after heading. Dry matter accumulation in grains of three rice cultivars were simulated using Richard equation, high-quality rice revealed early start in initial filling, longer period of active filling and lower maximum filling rate. About 1/5th-1/3rd part of dry matter in grain was found to come after remobilization of dry matter from leaf and stem after heading. [Conclusion]The data indicated that grain growth was correlated with dry matter redistribution in leaf. It can be concluded that higher dry matter accumulation in leaf and its remobilization was one of the most important physiological masons for imparting high quality in rice.关键词
优质籼稻/干物质积累/干物质流转/籽粒生长/动态特征Key words
high-quality indica rice/ dry matter, accumulation/ remobilization/ grain growth/ grain filling分类
农业科技引用本文复制引用
胡钧铭,江立庚,徐世宏,梁和,董登峰..优质籼稻花后干物质积累与流转及籽粒灌浆特征[J].南方农业学报,2011,42(1):16-21,6.基金项目
Guangxi Graduate Education Innovation Program Funded Projects(2007105930901M75 and 2009105930901D010) （2007105930901M75 and 2009105930901D010）
