QTLs for leaf number were identified with a set of recombinant inbred lines (RILs) derived from the cross of Xieqingzao B/Zhonghui 9308 as materials by the conditional composite interval mapping method. Five unconditional QTLs and two conditional QTLs were detected at different growth stages. The unconditional QTLs, qLN2.1, qLN2.2, qLN2.3 and qLN2.4, explained 11.68%-16.48% of phenotypic variation, tending to cluster on the long arm of chromosome 2. QTL analysis showed that the express period of conditional QTLs, qLN2.2 and qLN2.4, were unanimous to the dates of elongating and heading. Only one unconditional QTL for final leaf number was detected, but there was no effect of conditional QTL at all the tested developmental stages, indicating QTLs for leaf number were mainly expressed in spatial and temporal patterns.
DAI Gaoxing1,2, YANG Zhanlie1,3, DENG Guofu2, ZHANG Yingxin1, WANG Huimin1, ZHAI Rongrong1, CAO Liyong1,*, CHENG Shihua1,*
. QTL Analysis for Leaf Number on Main Stem in RILs of Super Hybrid Rice Xieyou 9308[J]. Chinese Journal OF Rice Science, 2012
, 26(3)
: 291
-296
.
DOI: 10.3969/j.issn.10017216.2012.03.006
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