文献类型: 外文期刊
第一作者: Lin, HX
作者: Lin, HX;Qian, HR;Zhuang, JY;Lu, J;Min, SK;Xiong, ZM;Huang, N;Zheng, KL
作者机构:
关键词: Oryza sativa L;RFLP;yield traits;QTLs
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN: 0040-5752
年卷期: 1996 年 92 卷 8 期
页码:
收录情况: SCI
摘要: Quantitative trial loci (QTLs) for yield and related traits in rice were mapped based on RFLP maps from two indica/indica F-2 populations, Tesanai 2/CB and Waiyin 2/CB. In Tesanai 2/CB 14 intervals carrying QTLs for eight traits were detected, including 3 for grain weight per plant (GWT), 2 for number of panicles per plant (NP), 2 for number of grains per panicle (NG), 1 for total number of spikelets per panicle (TNS), 1 for spikelet fertility (SF) 3 for 1000-grain weight (TGWT), 1 for spikelet density (SD), and I for number of first branches per main panicle. The 3 QTLs for GWT were located on chromosomes 1, 2, and 4, with 1 in each chromosome. The additive effect of the single locus ranged from 2.0 g to 9.1 g, A major gene (np4) for NP was detected on chromosome 4 within the interval of RG143-RG214, about 4 cM for RG143, and this locus explained 26.1% of the observed phenotypic variance for NP. The paternal allele of this locus was responsible for reduced panicles per plant (3 panicles per plant). In another population, Waiyin 2/CB, 12 intervals containing QTLs for six of the above-mentioned traits were detected, including 3 for GWT, 2 for each of NP, TNS, TGWT and SD, 1 for SF. Three QTLs for GWT were located on chromosome 1, 4, and 5, respectively. The additive effect of the single locus for GWT ranged from 6.7 g to 8.8 g, while the dominance effect was 1.7-11.5 g. QTL mapping in two populations with a common male parent is compared and discussed.
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