QTL and epistasis for low temperature germinability in rice.
QTL and epistasis for low temperature germinability in rice.
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DOI：
10.3724/sp.j.1006.2008.00551
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发表时间：
2008-01-01
期刊：
影响因子：
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通讯作者：
Wan, J. M.
中科院分区：
文献类型：
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作者：
Ji SuLan, Ji SuLan;Jiang Ling, Jiang Ling;Wan, J. M.
在较低的温度下具有较高的萌发能力是直播水稻品种的必要条件。利用粳稻品种Kinmaze与籼稻品种DV85杂交的重组自交系群体（RILs），对低温发芽率（LTG）的QTL（数量性状位点）进行了检测。以2002年江苏南京、2002年海南陵水和2003年南京3个地区15℃萌发培养10 d后的发芽率为LTG指标。在上述3种制种环境中，共检测到2、5、7、8、11、12号染色体上的11个QTL。其中，7号和11号染色体上的QTL定位于相似的基因组区域，每个QTL的最大表型变异解释率（PVE）为27.93%，上位互作的PVE略低。
High germination ability at relatively low temperature is essential for direct-seeding rice varieties. A recombinant inbred line population (RILs), derived from a cross between varieties Kinmaze (japonica) and DV85 (indica) was used to detect QTL (quantitative trait loci) for low temperature germinability (LTG). The germination rate at 15°C after 10 days germination culture in Nanjing, Jiangsu Province, and in Lingshui, Hainan Province, in 2002 and in Nanjing in 2003 was taken as LTG indicator. A total of 11 QTL on chromosomes 2, 5, 7, 8, 11, and 12 were detected in the above three seed production environments. Of these, QTL on chromosomes 7 and 11 mapped in similar genomic regions in all experiments and the maximum percentage of phenotypic variation explained (PVE) by each QTL was 27.93%, while epistatic interaction had slightly low PVE.