当前位置：
X-MOL 学术
›
bioRxiv. Genet.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The 55K SNP-Based Exploration of QTL for Spikelet Number Per Spike in a Tetraploid Wheat (Triticum turgidum L.) Population: Chinese Landrace Ailanmai X Wild Emmer
bioRxiv - Genetics Pub Date : 2021-06-29 , DOI: 10.1101/2020.10.21.348227 Ziqiang Mo , Jing Zhu , Jiatai Wei , Jieguang Zhou , Qiang Xu , Huaping Tang , Yang Mu , Qiantao Jiang , Yaxi Liu , Guoyue Chen , Jirui Wang , Pengfei Qi , Zhien Pu , Guangdeng Chen , Yuming Wei , Youliang Zheng , Xiujin Lan , Jian Ma
bioRxiv - Genetics Pub Date : 2021-06-29 , DOI: 10.1101/2020.10.21.348227 Ziqiang Mo , Jing Zhu , Jiatai Wei , Jieguang Zhou , Qiang Xu , Huaping Tang , Yang Mu , Qiantao Jiang , Yaxi Liu , Guoyue Chen , Jirui Wang , Pengfei Qi , Zhien Pu , Guangdeng Chen , Yuming Wei , Youliang Zheng , Xiujin Lan , Jian Ma
The spikelet number per spike (SNS) is a primary factor determining wheat yield. Common wheat breeding reduces the genetic diversity among elite germplasm resources, leading to a detrimental effect on future wheat production. It is, therefore, necessary to explore new genetic resources for SNS to increase wheat yield. A tetraploid landrace Ailanmai X wild emmer wheat recombinant inbred line (RIL) population was used to construct a genetic map using the wheat 55K single nucleotide polymorphism (SNP) array. The linkage map containing 1150 bin markers with a total genetic distance of 2411.8 cM was obtained. Based on phenotypic data from eight environments and best linear unbiased prediction (BLUP) values, five quantitative trait loci (QTL) for SNS were identified, explaining 6.71-29.40% of the phenotypic variation. Two of them, QSns.sau-AM-2B.3 and QSns.sau-AM-3B.2, were detected as the major and novel QTL. Their effects were further validated in two additional F2 populations using tightly linked Kompetitive Allele-Specific PCR (KASP) markers. Potential candidate genes within the physical intervals of corresponding QTL were predicted to participate in inflorescence development and spikelet formation. Genetic associations between SNS and other agronomic traits were also detected and analyzed. This study demonstrates the feasibility of wheat 55K SNP array developed for common wheat in genetic mapping of tetraploid population and shows the potential application of wheat related species in wheat improvement programs.
更新日期：2021-06-29
京公网安备 11010802027423号