CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2023, Vol. 45 ›› Issue (1): 95-101.doi: 10.19802/j.issn.1007-9084.2021316

Previous Articles     Next Articles

Development of novel peanut germplasm with resistance to late leaf spot and elite yield and plant-type characteristics

Peng-xia GUO1(), Yu YOU2, Bo-lun YU1, Jian-bin GUO1, Huai-yong LUO1, Li HUANG1, Nian LIU1, Wei-gang CHEN1, Yong LEI1, Bo-shou LIAO1, Li-ying YAN1, Hui-fang JIANG1, Xiao-jing ZHOU1()   

  1. 1.Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
    2.Nanchong Academy of Agricultural Sciences, Nanchong 63700, China
  • Received:2021-12-17 Online:2023-02-25 Published:2023-03-03
  • Contact: Xiao-jing ZHOU E-mail:2731544329@qq.com;zhouxiaojing@caas.cn


Linkage between late leaf spot resistance and poor yield and plant type traits of peanut makes it difficult to find out elite comprehensive materials in China. In this study, the parents and the recombinant inbreed lines (RILs) population derived from Zhonghua 5 × ICGV 86699 were assessed for their resistance to late leaf spot, and also yield and plant-type traits. Results revealed that the late leaf spot disease scores were investigated in 4 environments, and a total of 18 stable highly resistant and 26 resistant lines were identified. In 2 environments, 38 lines were selected with elite traits of hundred pod weight (≥180.0 g) and pods per plant (≥20.0). Similarly, a total of 54 lines were selected with moderate main stem height (30-60 cm) and total number of branches (≤20.0) in the 2 environments. By comprehensive analysis of late leaf spot disease scores, yield-related and plant-type related traits, 4 novel germplasm were found. Among them, one had high resistance to late spot disease with high yield and elite plant type related traits, 3 had moderate resistance with high yield and elite plant type related traits.

Key words: peanut, late leaf spot, yield, plant type, novel germplasm

CLC Number: