Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Hybrid Rice》 2005-05
Add to Favorite Get Latest Update

Progress in Breeding for Yield-enhancing QTL from O.rufipogon by Molecular Marker-assisted Selection

YANG Yi-shan~(1,2),DENG Qi-yun~(2,*),CHEN Li-yun~1,DENG Hua-bing~1,ZHUANG Wen~2,XIONG Yue-dong~2(1 Rice Science Research Institute of Hunan Agricultural University,Changsha,Hunan 410128,China;2 China National Hybrid Rice Research and Development Center,Changsha,Hunan 410125,China)  
Two yield-enhancing quantitative trait loci(QTL) yld1.1 and yld2.1 from O.rufipogon were identified by collaborative research between China National Hybrid Rice Research and Development Center and Cornell University of USA in 1995.They were later transferred to the elite late-season rice restorer line Ce 64-7 and middle-season rice restorer lines 9311 and Minghui 63.Q611 and other new rice restorer lines whose DNA containing the QTL yld1.1 and yld2.1 were developed by molecular marker-assisted selection(MAS) as well as field agronomic selection. The hybrids derived from Q611 and male sterile lines in rice showed strong heterosis in yield,indicating that the yield-enhancing QTL from O.rufipogon had a significant effect on increasing grain yield and had a great value in hybrid rice breeding,and the MAS was an effective method in genetically improving quantitative traits.
【Fund】: 国家自然科学基金项目(30270819);; 国家“863”计划项目(2004AA211142)
【CateGory Index】: S511.9
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved