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《Chinese Journal of Rice Science》 2001-01
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Mapping QTLs for Total Leaf Number of the Main Stem and Its Related Traits in Rice

ZHONG Dai bin 1,2 , LUO Li jun 1, MEI Han wei 1, GUO Long biao 1, WANG Yi ping 1, YU Xin qiao 1, YING Cun shan 1, LI Zhi kang 2,3 ( 1China National Rice Research Institute, Hangzhou 310006, China; 2International Rice Research  
Quantitative trait loci (QTLs) affecting total leaf number of the main stem, leafing rate at two different growth stages, heading date, and plant height in a recombinant inbred lines (RIL)population from the cross Lemont (japonica)×Teqing (indica) were investigated using a complete RFLP map with 182 marker loci. Eight QTLs for rate of leaf growth at two different stages, two QTLs for total leaf number of main stem, three QTLs for heading date, and four QTLs for plant height were mapped. Combined with previous studies on this cross, these results provided useful information on the nature of some detected QTLs. For example, QLn3, a main effect QTL from Teqing that give 1.5 leaf more of total leaf number, 9 days delayed heading, and 0.2 leaf increase each ten days during tillering stage in greenhouse condition was identified on chromosome 3 near the marker RG348. This QTL appeared to affect the basic vegetative period of rice plants since it was not affected by the daylength. On the other hand, QHd8 which affects heading date, plant height, and total leaf number of main stem appeared to be influenced by daylength.
【Fund】: 国家自然科学基金重点项目 ;; 国家重点基础研究发展规划项目! (973项目 ) ;; 美国洛克菲勒基金资助项目
【CateGory Index】: S511
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