QTLs identification for nitrogen and phosphorus uptake-related traits using ultra-high density SNP linkage
文献类型： 外文期刊
作者： Fu, Youqiang 1 ; Zhong, Xuhua 1 ; Pan, Junfeng 1 ; Liang, Kaiming 1 ; Liu, Yanzhuo 1 ; Peng, Bilin 1 ; Hu, Xiangyu 1 ; Hu 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Guangdong Key Lab New Technol Rice Breeding, Guangzhou 510640, Guangdong, Peoples R China
关键词： Quantitative trait locus (QTL); F2 populations; QTL mapping; Nitrogen; Phosphorus; Rice
期刊名称：PLANT SCIENCE （ 影响因子：4.729； 五年影响因子：5.132 ）
ISSN： 0168-9452
年卷期： 2019 年 288 卷
页码：
收录情况： SCI
摘要： To understand the genetic basis of nitrogen and phosphorus uptake in the cultivated rice, quantitative trait loci (QTL) analysis for 7 nitrogen and phosphorus uptake-related traits including above-ground biomass (AGB), leaf colour value (SPAD) in heading stage, grain nitrogen concentration (GNC), grain nitrogen content of the plant, total nitrogen content (TNC), grain phosphorus concentration, total phosphorus content (TPC) were conducted using SNP markers in a F2 population derived from a cross between GH128 and W6827. A total of 21 QTLs for nitrogen and phosphorus uptake-related traits distributed in 16 regions along 6 chromosomes were detected using a high density genetic map consisting of 1582 bin markers, with QTLs maximum explaining 8.19% of the phenotypic variation. Nine QTLs (42.9% of total QTLs) were detected on chromosome 2. Among them, two QTL clusters including AGB, TNC, TPC and GNC were also detected in the region bin 140 and bin 146 on the chromosome 2. The distance between the two clusters was only 4.1 cM. The presence of QTL clusters has important significance and could be useful in molecular marker assisted breeding. These genomic regions might be deployed for the simultaneous improving the use efficiency of nitrogen and phosphorus in rice breeding.
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