中国农业科学（英文版）2003，Vol.2Issue(6)：602-608,7.
Studies on the Photosynthetic Characteristics and Assimilate's Accumulation and Transformation in Heavy Panicle Type of Rice
Studies on the Photosynthetic Characteristics and Assimilate's Accumulation and Transformation in Heavy Panicle Type of Rice
MA Jun 1ZHU Qing-sen 2MA Wen-bo 2TIAN Yan-hua 1Yang Jian-chang 1ZHOU Kai-da2
作者信息
- 1. Rice Research Institute of Sichuan Agricultural University, Wenjiang 611130 ,P. R. China
- 2. Agricultural College, Yangzhou University, Yangzhou 225009 ,P. R. China
- 折叠
摘要
Abstract
Using 18 indiea rice varieties with different panicle weight, the photosynthetic characteristics and assimilate's accumulation and transformation in heavy panicle type of rice (HPT) were studied. The resuits showed that the net photosynthetic rate of the flag leaf in HPT after heading was obviously higher than that in medium panicle type(MPT) and light panicle type(LPT). The reason for the high net photosynthetic rate in HPT was the increase of Rubisco activities and chlorophyll content, and keeping high assimilate ability to CO2 under high and low light intensity, high temperature and low CO2 content, and light midday depression and wide adaptability to environmental conditions. The high net photosynthetic rate of HPT might be also the results of its excellent stomatal characteristics and higher total quantity of stomatal opening degrees(stomatal density X stomatal opening degrees). There was a large amount of dry matter production after heading and obvious high assimilate's transformation to panicle in HPT.关键词
Rice/Heavy panicle type/Photosynthetic characteristics/Assimilate's accumulation/Assimilate's transformation/High yield breedingKey words
Rice/Heavy panicle type/Photosynthetic characteristics/Assimilate's accumulation/Assimilate's transformation/High yield breeding分类
农业科技引用本文复制引用
MA Jun,ZHU Qing-sen,MA Wen-bo,TIAN Yan-hua,Yang Jian-chang,ZHOU Kai-da..Studies on the Photosynthetic Characteristics and Assimilate's Accumulation and Transformation in Heavy Panicle Type of Rice[J].中国农业科学（英文版）,2003,2(6):602-608,7.
