Identification of quantitative trait loci associated with soybean seed protein content using two populations derived from crosses between Glycine max and Glycine soja. (16th July 2014)

• Record Type: Journal Article
• Authors: Yan, Long; Xing, Li-Li; Yang, Chun-Yan; Chang, Ru-Zhen; Zhang, Meng-Chen; Qiu, Li-Juan
• Is Part Of: Plant genetic resources. Volume 12(2014)Supplement 1
• Page Start: S104
• Page End: S108
• Publication Date: 2014-07-16
• Subjects: Glycine max, -- Glycine soja, -- QTLs, -- seed protein content; Plant genetics -- Periodicals; Plant breeding -- Periodicals; 632.523
• DOI: 10.1017/S1479262114000379
• Languages: English
• ISSNs: 1479-2621

Abstract

Abstract : Seed protein content is one of the most important traits controlled by quantitative trait loci (QTLs) in soybean. In this study, a Glycine soja accession (ZYD2738) was crossed with two elite cultivars Jidou 12 and Jidou 9 separately and subsequently the resulting F2:3 populations were used to identify QTLs associated with seed protein content. Protein contents in either population appeared to have a normal distribution with transgressive segregation. A total of five QTLs associated with high protein content were identified and mapped to chromosomes 2, 6, 13, 18 and 20, respectively. Of these QTLs, three ( qPRO_2_1, qPRO_13_1 and qPRO_20_1 ) were identified in the same region in both the populations, whereas the other two ( qPRO_6_1 and qPRO_18_1 ) were mapped in two different regions. qPRO_2_1 appears to be a novel protein QTL. qPRO_6_1, qPRO_18_1 and qPRO_20_1 had additive effects on seed protein content, while qPRO_13_1 had an over-dominant effect on seed protein content. These QTLs and their linked markers could serve as effective tools for marker-assisted selection to increase seed protein content.