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Recently，Qinling, College of Plant Science and Technology of our school、Professor Xing Yu’s team is herePlant PhysiologyPublished online titled "GWAS identified two important genes involving in the regulation of nut weight and leaf length of Chinese chestnut” research paper。This study analyzed six yield-related horticultural traits of chestnut through genome-wide association analysis (GWAS)，Revealing the genetic basis of chestnut fruit-related yield traits，Provides valuable information and insights for chestnut breeding。Professor Qin Ling and Professor Xing Yu are the corresponding authors of this article，Beijing Agricultural College and Beijing Forestry University jointly train doctoral student Zhang Yu、Dr. Zhang Weiwei and Dr. Liu Yang, Bet365 gamesyoung teachers of Beijing Agricultural College, are the first authors of this article。This research was supported by the National Natural Science Foundation of China、Support and assistance from the National Key R&D Program and the Beijing Advanced Innovation Center for Molecular Design and Breeding of Forest Trees。

Chestnut is an important woody food crop，Due to its high nutritional value and tolerance to poor soil，Widely planted in mountainous areas。Research on chestnut in recent years has mainly focused on trait correlation analysis、Molecular marker development and resistance to chestnut blight，Lack of genetic structure analysis and gene function verification for traits directly related to yield (seed size) and indirectly related traits (leaf length)。In recent years, our research group has published the first genome of chestnut，Constructed an instant transformation system for chestnut callus，Laying the foundation for rapid identification of gene functions。

151 Chinese chestnut varieties (lines) were extensively collected in this study，and perform simplified genome sequencing。Population genetics results show，Chinese chestnut varieties can be divided into two ecological types, north and south。Through bet365 online casinogenome-wide selection signal analysis of two ecotype populations，Identified tandemly arranged genes that may affect chestnut traits and environmental adaptability。To further explore the formation of chestnut yield-related traits，Conducted a genome-wide association study on 6 important horticultural traits in 151 varieties (lines)。45 highly related QTL identified，Sifted out 6 genes that are highly related to these traits，Including the candidate gene CmAP2 that affects chestnut grain weight and the candidate gene CmCIB1 that affects leaf length。Use gene silencing and overexpression technology to verify its function，Discovered that CmAP2 affects seed size by negatively regulating cell size，CmCIB1 affects the length of leaves and shoots by affecting the length of cells。

Team teacher said，Will continue to thoroughly implement the spirit of the school’s Fourth Party Congress，Revolving around the rural revitalization strategy and the need for Beijing to take the lead in basically realizing agricultural and rural modernization，Focus on the frontier areas of agriculture and forestry，Mainly focus on the advantages and characteristics，Continuously improve technological innovation capabilities，bet365 games best slotsIn order to accelerate the implementation of the “Innovation Driven Project”，Make new and greater contributions to the comprehensive construction of a domestic first-class and internationally renowned urban agriculture and forestry characteristics high-level application-oriented university。