Allelic variations of HMW-GS and LMW-GS and quality analysis in Yannong series wheat cultivars/derivative lines.

Introduction: Gluten quality is one of the most important traits of the common wheat ( L.). In Chinese wheat production, Yannong series cultivars/derivative lines possess unique characteristics and play an important role in both yield and quality contribution.

Methods: To dissect their genetic basis of the gluten quality, in this study, allelic variations of high-molecular-weight glutenin subunit (HMW-GS) and low-molecular-weight glutenin subunit (LMW-GS) in 30 Yannong series wheat cultivars/derivative lines and three check cultivars were evaluated using the allele-specific molecular markers, and six crucial quality indexes were also further measured and analyzed.

Results: The results demonstrated that the frequencies of HMW-GSs , and in these 30 genotypes and three check cultivars accounted for 87.9%, 24.2% and 9.1%, respectively. For the allelic variations of LMW-GSs, , , , , and were identified in 18, 9, 13, 11, and 2 genotypes, respectively; , and were identified in 13, 23 and 4 genotypes, respectively. Notably, Yannong 999, containing + + , and Jinan 17 containing + both meet the national standard for high-quality wheat and belong to the category of first-class high-quality strong gluten wheat.

Discussion: These findings can provide reference for wheat quality improvement and popularization in the production.