中国农业科学 ›› 2025, Vol. 58 ›› Issue (12): 2303-2315.doi: 10.3864/j.issn.0578-1752.2025.12.003

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

322份花生种质资源黄曲霉侵染抗性的评价

崔梦杰(), 孙子淇, 齐飞艳, 刘华, 徐静, 杜培, 黄冰艳, 董文召, 韩锁义(), 张新友()   

  1. 河南省农业科学院河南省作物分子育种研究院/神农种业实验室/农业农村部黄淮海油料作物重点实验室/河南省油料作物遗传改良重点实验室,郑州 450002
  • 收稿日期:2024-12-11 接受日期:2025-02-17 出版日期:2025-06-19 发布日期:2025-06-19
  • 通信作者:
    韩锁义,E-mail:
    张新友,E-mail:
  • 联系方式: 崔梦杰,E-mail:cui2015104035@163.com
  • 基金资助:
    国家自然科学基金青年科学基金(32301851); 河南省农业科学院优秀青年基金(2024YQ03); 河南省科技攻关项目(242102110308)

Evaluation of 322 Peanut Germplasms for Resistance to Aspergillus flavus Infection

CUI MengJie(), SUN ZiQi, QI FeiYan, LIU Hua, XU Jing, DU Pei, HUANG BingYan, DONG WenZhao, HAN SuoYi(), ZHANG XinYou()   

  1. Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences/The Shennong Laboratory/Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture and Rural Affairs/Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002
  • Received:2024-12-11 Accepted:2025-02-17 Published:2025-06-19 Online:2025-06-19

摘要:

【目的】黄曲霉毒素污染是制约花生产业良性发展的重要因素之一,评价国内外育种材料抗性水平,发掘新的抗性材料,为抗性新品种培育及遗传学研究提供种质资源。【方法】2020—2021年连续2年对国内外322份花生种质进行繁殖和收获,以强侵染力、高产毒的黄曲霉As 3.4408为接种用菌株,采用室内接种法,对3个“环境”繁殖的花生籽仁进行黄曲霉侵染抗性鉴定,并对其植物学类型、株型、籽仁营养品质等进行测定与分析,综合评价和筛选性状优异的抗性材料。【结果】从供试材料中筛选出13份抗黄曲霉侵染材料,占鉴定资源总数的4.04%,且大部分属于普通型花生,其中,包含2份稳定高抗材料(C203和C206),未获得对黄曲霉侵染免疫的种质。统计分析表明,322份花生种质黄曲霉侵染指数表现为连续变异,广义遗传力大于0.80,表明花生对黄曲霉菌的抗性受基因型和“环境”的显著影响,且表型变异主要由遗传因素控制。相关性分析表明,不同“环境”繁殖种质的侵染指数之间均呈极显著正相关关系(P<0.001),同一份种质在不同“环境”收获后的侵染抗性表型较为一致。籽仁营养品质与抗性之间的相关性分析发现,供试花生种质的黄曲霉侵染指数与其营养品质性状无显著相关关系。对不同植物学类型和株型花生种质的侵染抗性分析表明,抗黄曲霉菌侵染的材料在普通型/蔓生型花生种质中占比更高。【结论】不同“环境”繁殖花生种质响应黄曲霉侵染的表型较为稳定,种质之间侵染抗性的差异主要受基因型控制,遗传较为稳定。鉴定获得的稳定高抗材料C203和C206,可作为优异抗源用于黄曲霉抗性基因挖掘和抗黄曲霉花生品种改良。

关键词: 花生, 黄曲霉, 种质资源, 抗性评价, 优异抗源

Abstract:

【Objective】Aflatoxin contamination is one of the important factors that hinders sustainable development of the peanut industry. Precise evaluation of germplasm resources from China and abroad for resistance to A. flavus infection and creation of new resistant germplasms will facilitate the development of resistant cultivars. 【Method】The A. flavus infection index of 322 peanut germplasm lines were characterized following in-vitro inoculation of seeds harvested from 3 different “environments” (CA2020, CS2020, CS2021). Aspergillus flavus strain As 3.4408, known for its strong infectivity and high toxin production, was used as the inoculation strain. The botanical type, plant type and nutritional quality of kernels were measured and analyzed. Accessions exhibiting resistance with novel traits were comprehensively evaluated and screened. 【Result】Thirteen accessions with stable resistance were identified, accounting for 4.04% of the total germplasm lines evaluated, most of which belonged to var. hypogaea, including two with stable and high resistance (C203 and C206), while no accession was observed to be immune to Aspergillus flavus infection. The frequency distribution of infection index of 322 accessions exhibited continuous variation, with the broad-sense heritability exceeding 0.8, indicating that the A. flavus-resistance of kernels was significantly influenced by genotypes and “environments”, and the phenotypic variation was primarily controlled by genetic factors. Correlation analysis revealed significant positive correlation of infection index of accessions among the different “environments” (P<0.001), and the phenotype of each accession harvested from various “environments” was relatively consistent. Additionally, no significant correlation was found between nutritional quality and infection index. Comparative analysis of infection index among peanut accessions of different botanical and plant types revealed that var. hypogaea/prostrate-type peanuts were more likely to exhibit resistance to A. flavus infection within the existing peanut germplasm resources. 【Conclusion】The phenotypes of peanut germplasms harvested from different “environments” in response to A. flavus infection were relatively stable. Variation of kernels resistance to A. flavus infection was primarily controlled by genotype. Accessions C203 and C206, exhibiting stable and high resistance, can serve as excellent resistant parents for the mining of aflatoxin resistance genes and for the improvement of peanut varieties resistant to aflatoxin contamination.

Key words: peanut, Aspergillus flavus, genetic resources, resistance evaluation, novel resistance resource