title: Genetic Diversity and Association Analysis for Solvent Retention Capacity in the Accessions Derived from Soft Wheat Ningmai 9.
abstract: Solvent retention capacity (SRC) test is an effective method for quality evaluation of soft wheat. Ningmai 9 is a founder in soft wheat breeding. The SRC and genotype of Ningmai 9 and its 117 derivatives were tested. Association mapping was employed to identify the quantitative trait loci (QTL) associated with SRCs. Ningmai 9 had the allele frequency of 75.60% and 67.81% to its first- and second-generation derivatives, respectively, indicating higher contribution than theoretical expectation. Neighbor-joining cluster based on the genotyping data showed that Ningmai 9 and most of its first-generation derivatives were clustered together, whereas its second-generation derivatives were found in another group. The variation coefficients of SRCs in the derivatives ranged from 5.35% to 8.63%. A total of 29 markers on 13 chromosomes of the genome were associated with the SRCs. There were 6 markers associated with more than one SRC or detected in two years. The results suggested that QTL controlling SRCs in Ningmai 9 might be different from other varieties. MarkersXgwm44,Xbarc126,Xwmc790, andXgwm232associated with SRCs in Ningmai 9 might be used for quality improvement in soft wheat breeding.
authors.affiliation: Provincial Key Lab for Agrobiology, Jiangsu Academy of Agricultural Sciences/Jiangsu Collaborative Innovation Center for Modern Crop Production, 50 Zhongling Street, Nanjing, Jiangsu 210014, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Jiang
authors.affiliation: Provincial Key Lab for Agrobiology, Jiangsu Academy of Agricultural Sciences/Jiangsu Collaborative Innovation Center for Modern Crop Production, 50 Zhongling Street, Nanjing, Jiangsu 210014, China.
authors.forename: Ping-Ping
authors.initials: PP
authors.lastname: Zhang
authors.affiliation: Provincial Key Lab for Agrobiology, Jiangsu Academy of Agricultural Sciences/Jiangsu Collaborative Innovation Center for Modern Crop Production, 50 Zhongling Street, Nanjing, Jiangsu 210014, China.
authors.forename: Xu
authors.identifier: 0000-0002-0706-8257
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Provincial Key Lab for Agrobiology, Jiangsu Academy of Agricultural Sciences/Jiangsu Collaborative Innovation Center for Modern Crop Production, 50 Zhongling Street, Nanjing, Jiangsu 210014, China.
authors.forename: Hong-Xiang
authors.identifier: 0000-0003-2343-6133
authors.initials: HX
authors.lastname: Ma