SNP-based QTL mapping for panicle traits in the japonica super rice cultivar Liaoxing 1

作     者：Mingzhu Zhao Zuobin Ma Lili Wang Zhiqiang Tang Ting Mao Chuanbin Liang Hong Gao Liying Zhang Na He Liang Fu Changhua Wang Guomin Sui Wenjing Zheng Mingzhu Zhao;Zuobin Ma;Lili Wang;Zhiqiang Tang;Ting Mao;Chuanbin Liang;Hong Gao;Liying Zhang;Na He;Liang Fu;Changhua Wang;Guomin Sui;Wenjing Zheng

作者机构：Institute of Rice ResearchLiaoning Academy of Agricultural SciencesShenyang 110000LiaoningChina Institute of Rice ResearchShenyang Agricultural UniversityShenyang 110161LiaoningChina Liaoning Province Saline and Alkaline Land Utilization and Research InstitutePanjin 124010LiaoningChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2020年第8卷第5期

页      面：769-780页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：The study was supported by the National Natural Science Foundation of China(31901526) China Postdoctoral Science Foundation Grant(2019M651139)and Liaoning Key Agricultural Program(2019JH1/10200001-2) 

主　　题：cultivar panicle effect. 

摘      要：Panicle traits directly associated with yield are a target of selection in rice *** abundant QTL for panicle traits have been identified,there is little information about the genetic basis of panicle traits in japonica super rice(JSR)*** this study,we identified QTL for panicle traits in three environments using a population of recombinant inbred lines(RILs)derived from the JSR cultivar Liaoxing 1.A total of 197 RILs were genotyped with 285 polymorphic SNP *** data and best linear unbiased prediction(BLUP)value of primary branch number(BNP),secondary branch number(BNS),grain number on primary branch(GNP),grain number on secondary branch(GNS),grain number per panicle(GN),panicle length(PL)and grain density(GD)were used for QTL mapping.A total of 105 QTL for seven panicle traits were detected in single environments using their BLUP *** QTL explained 0.51%–52.22%of the phenotypic *** the 105,49 were also detected by joint multi-environment *** stable QTL:qGD9,qPL9,qGNP9,qGN6,and qBNS6.2 were identified in multiple ***9,qGNP9,and qPL9,co-localizing on chromosome 9,likely correspond to the known gene ***,qGN6 and qBNS6.2 in a co-localization region were identified as novel QTL,and their Liaoxing 1 alleles had a positive *** RILs with the QTL allele combinations qGD9/qPL9/qGNP9 and qGN6/qBNS6.2 showed greater *** investigation of the putative gene underlying qGN6/qBNS6.2 would shed light on the molecular mechanism of JSR.