Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (1): 23-31.doi: 10.11924/j.issn.1000-6850.casb2021-0440

Special Issue: 生物技术 植物保护 食用菌 食用菌 园艺

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Genetic Relationship Analysis and Agronomic Traits Evaluation of 18 Agrocybe aegerita Strains

WANG Hongxiu1(), SUN Peng1, AN Ying2, HU Jia1, CHEN Xutao1, LI Jing1, WEI Yunhui1()   

  1. 1Institute of Agricultural Applied Microbiology, Jiangxi Academy of Agricultural Sciences, Nanchang 330200
    2MOE Key Laboratory of Biosystems Homeostasis & Protection/ Institute of Biophysics, College of Life Sciences, Zhejiang University, Hangzhou 310058
  • Received:2021-04-25 Revised:2021-09-17 Online:2022-01-05 Published:2022-02-24
  • Contact: WEI Yunhui E-mail:wanghongxiu0624@163.com;yunhuiwei@sina.com

Abstract:

In this study, 18 strains of Agrocybe aegerita (4 wild strains, 7 commercially cultivated strains, 5 strains mutated by cobalt-60 irradiation and 2 mutagenesis strains from Shenzhou 10 spacecraft) were used as experimental materials, to study the genetic relationship of Agrocybe aegerita and screen out strains with better agronomic traits for industrial production. Molecular markers ISSR, antagonistic test and isozyme techniques were used to analyze the genotyping and genetic relationship of the strains. By analyzing the cap thickness and diameter, stalk length and diameter, growth period and yield, the agronomic traits of the 18 strains of Agrocybe aegerita were compared. The 18 strains of Agrocybe aegerita were divided into 7 groups by antagonistic test. The 20 ISSR primers screened out could amplify 164 clear bands, and the average ratio of polymorphic bands was 81.1%. Clustering analysis of ISSR markers showed that the 18 strains could be divided into 6 groups when the genetic similarity coefficient was 0.828. The 18 strains were also divided into 6 groups by esterase isozyme test. The agronomic traits analysis showed that ‘Cha 5’, ‘AS-1’, ‘Cha 3’, ‘Baicha’, ‘Chayuan 1’ and ‘Yangshudong 1’ had better comprehensive traits. The results of ISSR molecular marker test, antagonistic test and esterase isozyme test were basically consistent. The optimal strains ‘Chayuan 1’, ‘Yangshudong 1’, ‘AS-1’, ‘Cha 3’, ‘Baicha’ and ‘Cha 5’ were selected as the industrial production strains of Agrocybe aegerita.

Key words: Agrocybe aegerita, antagonistic reaction, ISSR, esterase isoenzyme, genetic relationship, agronomic traits

CLC Number: