Comparison of Panicle Related Characters for Rice Maintainer Lines in Jiangxi Province
He Xiaopeng, Chen Xiaorong, Hu Lifang, Ouyang Linjuan ( College of Agronomy, Jiangxi Agricultural University/Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/ Key Laboratory of Physiology, Ecology and Cultivation of Double Cropping Rice, Ministry of Agriculture, The People’s Republic of China , Nanchang 330045)
Panicle is one of the important factors for rice yield improvement, therefore, research works concerning panicle related characters have been paid wide attention. In order to understand the rice panicle traits in depth and provide the basis for new varieties breeding, 3 typical maintainer lines cultivars applied in the production in Jiangxi Province were studied by using ‘ Zhenshan 97B ’ as check in this study. The results revealed that, 99B, ‘ XinluB ’ and 146B increased significantly for panicle number, primary branch number and secondary branch number. The most pronounced increase were panicle number and secondary branch number, averaged as 13.1% and 27.5% respectively. But the panicle length increased or decreased compared with ‘ Zhenshan 97B ’ , which indicated that the researchers pay more attention on panicle related traits in Jiangxi rice maintainer lines breeding program in recent years, more tillering and large panicle was chosen as the focus. Correlation analysis showed that, panicle number was significantly positively correlated with primary and secondary branch number, and the correlation coefficient was respectively 0.88 and 0.79, indicated that panicle number played an important role in branch number improvement and that the contradiction between more tillering and large panicle could be broken through breeding selection. Panicle length was significantly negative correlated with branch number and primary and secondary branch number, and correlation coefficient was respectively -0.75, -0.43 and -0.59, which indicated that there was contradiction between panicle length and branch number and panicle number, therefore the panicle length was an important condition to ensure the more tillering and large panicle formation.
【Fund】： 江西省教育厅科学技术研究项目“昌恢891抗褐飞虱主基因连锁标记的开发及其应用效率分析”(GJJ12222);; 江西农业大学博士启动金项目“水稻遗传育种基础研究”(09003270);; 赣鄱英才555工程“‘性状机能协调型’双季超级稻的选育与应用”;; 江西省重大科技专项“水稻高产优质分子设计育种与种质创新”
【CateGory Index】： S511
【CateGory Index】： S511