首页|期刊导航|中国农业科学（英文版）|Differential Response of Grain Quality to Cold Water Irrigation in Cold Tolerant and Sensitive Lines of Rice
中国农业科学（英文版）2005，Vol.4Issue(6)：413-420,8.
Differential Response of Grain Quality to Cold Water Irrigation in Cold Tolerant and Sensitive Lines of Rice
Differential Response of Grain Quality to Cold Water Irrigation in Cold Tolerant and Sensitive Lines of Rice
摘要
Abstract
Three rice varieties and several F3 lines with high and low cold tolerance, selected from F3 segregation lines of two crosses Milyang 23/Tong 88-7 and Milyang 23/TR22183 were used to analyze the effects of cold tolerance on the response of grain quality to cold water irrigation. The result showed that cold water irrigation led to the decrease of rice grain size. The length, length-width ratio and weight of brown rice grain were more sensitively affected by cold water irrigation than the width and thickness. The shape of brown rice grain was not significantly affected by the selection for cold tolerance at the seedling stage (CTS). The gel consistency, amylose content, peak viscosity, cool viscosity, breakdown viscosity and consistency viscosity were decreased, while alkali digestibility value and protein content were increased by cold water irrigation. Under normal irrigation condition the physicochemical properties of milled rice and viscogram components of milled rice flour were not significantly different between lines with high and low cold tolerance. Under cold water irrigation the amylose content, peak viscosity, hot viscosity, final viscosity of rice lines with high CTS or high cold tolerance at the booting stage (CTB) were higher, while the protein content, setback viscosity, breakdown ratio and setback ratio were lower, than those of rice lines with low cold tolerance. This implied that the cold water response of rice grain quality was less sensitive in the lines with high cold tolerance than in the lines with low cold tolerance, and the varietal improvement for cold tolerance would be important for grain quality improvement at the same time.关键词
Rice/Cold tolerance/Cold water/Grain qualityKey words
Rice/Cold tolerance/Cold water/Grain quality分类
农业科技引用本文复制引用
HAN Long-zhi,PIAO Zhong-ze,Koh Hee-jong..Differential Response of Grain Quality to Cold Water Irrigation in Cold Tolerant and Sensitive Lines of Rice[J].中国农业科学（英文版）,2005,4(6):413-420,8.基金项目
This work was supported by the Korea Science Engineering Foundation (981-0601-001-2) and the National Key Research Program of 10th Five-Year Plan of China (2001BA511B02). （981-0601-001-2）
