Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (34): 9-14.doi: 10.11924/j.issn.1000-6850.casb2021-0022

Special Issue: 油料作物

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Main Agronomic Traits of Peanut Landraces of Sichuan Province: Genetic Diversity Analysis

Lin Xianfeng1,2(), Xia Youlin1, Jing Yulin1, Mao Jinxiong1, He Jinyu1, Liao Junhua1, Mao Ruohan3, You Yu1()   

  1. 1Nanchong Academy of Agricultural Sciences, Nanchong Sichuan 637000
    2Seed Quality Supervision and Inspection Station of Nanchong, Nanchong Sichuan 637000
    3College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193
  • Received:2021-01-11 Revised:2021-08-11 Online:2021-12-05 Published:2022-01-06
  • Contact: You Yu E-mail:lxf0504@126.com;yuyoujtsd@163.com

Abstract:

The genetic diversity and characteristics of peanut landraces in Sichuan Province were clarified to provide a theoretical basis and high-quality parent materials for peanut breeding. The materials were 100 peanut landraces from different areas in Sichuan Province. The data of main agronomic traits such as growth period, mainstem length and 100-pod weight were obtained by referring to the Specification and Data Standard of Peanut Germplasm Resources.The results showed that among the 14 traits, the secondary branching number per plant possessed the largest coefficient of variance (54.12%), and the growth period possessed the smallest coefficient of variance (0.99%). The mainstem length per plant had the highest index of genetic diversity (2.99), and the growing period per plant had the smallest index of genetic diversity (0.19). Based on agronomic traits, 100 materials were clustered into 3 groups which were dominated by fastigiata in the mean Euclidean distance 5. There were 7 pearl bean type materials in groupⅠand 9 pearl bean type materials in group Ⅲ. At the same time, multiple landraces of the same geographical origin crossed over in these three groups. The results indicate that the genetic relationship of Sichuan peanut landraces is not related to their type and geographical origin, but there is rich genetic diversity among peanut varieties.

Key words: peanut, landrace, agronomic traits, diversity, Sichuan

CLC Number: