Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《China Rice》 2016-02
Add to Favorite Get Latest Update

Correlation Analysis of Grain Quality in Medium Indica Hybrid Rice Combinations with Different Grain Shape

KUANG Haochi;LUO Juntao;ZENG Zhengming;YANG Yang;CHEN Guangzeng;HE Xingcai;FU Jun;JIANG Yudong;ZHENG Jun;Rice and Sorghum Research Institute,Sichuan Academy of Agriucltural Sciences/Key Laboratory of Southwest Rice Biology and Genetic Breeding,Ministry of Agriculture;Luzhou Branch of National Rice Improvement Center;  
According to the classification method of rice grain shape analysis on the situation of quality characters and correlation was conducted by using the 36 medium indica hybrid rice combinations authorized in Sichuan Province during 2013-2014. The results indicated that only 2 combinations reach three grade quality standards in the 36 indica hybrid rice combinations, the length-width ratio of the 2 combinations were greater than 2.9. According to the grain quality of individual traits, the highest quality rate is brown rice rate, followed by gel consistency and head milled rice rate, the last were chalky rice rate and chalkiness degree. The high quality rate of chalky rice rate and chalkiness degree of length grain type combinations were both 16.67%. The high quality rate of chalky rice rate and chalkiness degree of medium grain type combinations were 0 and 14.29%. The high quality rate of chalky rice rate and chalkiness degree of short grain type combinations were 10.00% and 0 respectively. Improving the quality of medium indica hybrid rice combinations was restricted by chalky rice rate and chalkiness degree. Correlation analysis of quality results showed that the chalky rice rate and chalkiness degree were highly significant negative correlation with length-width ratio and highly significant positive correlation with amylose content. The chalky rice rate and chalkiness degree were highly significant positive correlation with amylose content in length grain type combinations. The chalky rice rate and chalkiness degree were highly significant negative correlation with length-width ratio and highly significant positive correlation with amylose content in medium grain type combinations. The chalky rice rate and chalkiness degree were not significantly correlated with other quality traits of short grain type combination. It is suggested that genetic improvement of the chalky rice rate and chalkiness degree in medium indica hybrid rice combinations could start from grain shape. It is a good suggestion to select long grain type, big capacity, no crack and almost cylindrical materials or combinations.
【Fund】: 四川省“十二五”财政基因工程项目(2011JYGC11-029);; 四川省“十二五”水稻育种攻关项目(2011NZ-0098-1);; 德阳市科技成果转化项目(专项)(CZ20140020);; 四川省农业科学院青年基金项目
【CateGory Index】: S511.21
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Similar Journals
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved