文献类型： 外文期刊

作者： Anis, Galal Bakr ¹ ; Zhang, Yingxin ¹ ; Wang, Huimin ³ ; Li, Zihe ¹ ; Wu, Weixun ¹ ; Sun, Lianping ¹ ; Riaz, Aamir ¹ ; Ca ¹ ;

作者机构： 1.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China

2.Agr Res Ctr, Field Crops Res Inst, Rice Res & Training Ctr, Kafr Al Sheikh 33717, Egypt

3.Jiangxi Acad Agr Sci, Nanchang 210014, Jiangxi, Peoples R China

关键词： rice; phosphorus deficiency; genomic regions; CSSLs; root traits

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2018 年 19 卷 5 期

页码：

收录情况： SCI

摘要： Phosphorus (P) is the essential macro-element supporting rice productivity. Quantitative trait loci (QTL) underlying related traits at the seedling stage under two different phosphorus levels was investigated in rice using a population of 76 Chromosomal Sequence Substitution Lines (CSSLs) derived from a cross between the maintainer variety XieqingzaoB (P stress tolerant) and the restorer variety Zhonghui9308 (P stress sensitive); the parents of super hybrid rice Xieyou9308. A genetic linkage map with 120 DNA marker loci was constructed. At logarithmic odd (LOD) value of 2.0, a total of seven QTLs were detected for studied traits under two P levels and their relative ratio. The LOD values ranged from 2.00 to 3.32 and explaining 10.82% to 18.46% of phenotypic variation. Three QTLs were detected under low phosphorus (P-), one under normal (P+) and three under their relative ratio (P-/P+) on the rice chromosomes 3, 5, 6, 8 and 10. No significant QTLs were found for shoot dry weight (SDW) and total dry weight (TDW). The pleiotropic QTLs influencing root number (qRN5) and root dry weight (qRDW5) as novel QTLs under P- level were detected near marker RM3638 on chromosome 5, which considered to directly contributing to phosphorus deficiency tolerance in rice. These QTLs need further analysis, including the fine mapping and cloning, which may use in molecular marker assisted breeding.