Quantitative Trait Loci Mapping for Leaf Length and Leaf Width in Rice cv. IR64 Derived Lines

被引:31
作者
Farooq, Muhammad [1 ,2 ]
Tagle, Analiza G. [1 ]
Santos, Rizza E. [1 ]
Ebron, Leodegario A. [1 ]
Fujita, Daisuke [1 ]
Kobayashi, Nobuya [1 ]
机构
[1] IRRI, Manila 1301, Philippines
[2] Univ Agr Faisalabad, Dept Agron, Faisalabad 38040, Pakistan
关键词
MENDELIAN FACTORS; YIELD TRAITS; FLAG LEAF; SINK; QTL; IDENTIFICATION; POPULATION; RESPONSES; DENSITY;
D O I
10.1111/j.1744-7909.2010.00955.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The present study was conducted to identify quantitative trait loci (QTLs) for leaf size traits in IR64 introgression lines (INLs). For this purpose, selected F-2 populations derived from crosses between recurrent parent IR64 and its derived INLs, unique for leaf length and leaf width, were used to confirm QTLs. A total of eight QTLs, mapped on three chromosomes, were identified for the four leaf size traits in six F-2 populations. A QTL for leaf length, qLLnpt-1, in HKL69 was identified around simple sequence repeat (SSR) marker RM3709 on chromosome 1. Two QTLs for flag leaf length, qFLLnpt-2 and qFLLnpt-4, in HFG39 were indentified on chromosomes 2 and 4, respectively. For flag leaf width, a QTL, qFLWnpt-4, in HFG39 was identified around RM17483 on chromosome 4. While another QTL for flag leaf width, qFLWnpt-1, in HFG27 was identified around RM3252 on chromosome 1. A QTL for leaf width, qLWnpt-2, in HKL75 was identified around RM7451 on chromosome 2. For leaf width, two QTLs, qLWnpt-4a, qLWnpt-4b, in HKL48 and HKL99 were identified around RM7208 and RM6909, respectively on chromosome 4. Results from this study suggest the possibilities to use marker-assisted selection and pyramiding these QTLs to improve rice water productivity.
引用
收藏
页码:578 / 584
页数:7
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