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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (6): 1126-1131.doi: 10.19802/j.issn.1007-9084.2020124

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Evaluation of resistance of Shandong peanut varieties to Sphaceloma arachidis

Ju-xiang WU1(), Man-lin XU1(), Xia ZHANG1, Jing YU1, Zhi-qing GUO1, Ying LI1, Xin-ying SONG1, Kang HE1, Xin-guo LI2, Ru-jun ZHOU3, Yu-cheng CHI1(), Shu-bo WAN4()   

  1. 1.Shandong Peanut Research Institute, Qingdao 266100, China
    2.Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, China
    3.Shenyang Agricultural University,Shenyang 110866,China
    4.Shandong Academy of Agricultural Sciences, Jinan 250100, China
  • Received:2020-05-07 Online:2021-12-22 Published:2021-12-23
  • Contact: Yu-cheng CHI,Shu-bo WAN E-mail:1059527515@qq.com;xumanlin@126.com;87626681@163.com;wansb@saas.ac.cn;87626681@163.com

Abstract:

In order to detect the different disease resistance of peanut main varieties in Shandong to peanut scab (Sphaceloma arachidis Bitaucourt et Jenkins) and its effect on peanut yield, in 2018-2019, we evaluated 36 peanut germplasm resources for resistance to peanut scab. The evaluation wascarried out in the field and greenhouserespectively,we also analyzed the effect of disease onyield. The result showed that there were 8 accessions as high susceptibility (HS) accounted for 22.22%; 4 accessions rated as susceptibility (S) and accounted for 11.11%; 2 accessions rated as moderate resistant (MR) and accounted for 5.56%; 11 accessions rated as resistant (R) and accounted for 30.56%; 11 accessions rated as high resistant (HR) and accounted for 30.56%.There was an exponent relation between the disease index and yield loss rate, the yield loss rate increased with the increase of decrease index.

Key words: peanut, Sphaceloma arachidis, evaluation of resistance, yield loss rate

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