120份花生种质资源农艺性状及晚斑病抗性鉴定与评价
作者:
作者单位:

1.南充市农业科学院,四川南充 637000;2.中国农业科学院油料作物研究所,武汉 430000

作者简介:

研究方向为花生遗传育种与栽培,E-mail:wangchaohuan12@163.com

通讯作者:

夏友霖,研究方向为花生遗传育种与栽培,E-mail: tianfupeanut@hotmail.com

中图分类号:

基金项目:

国家花生产业技术体系(CARS-13);四川省苗子工程(2023JDRC0118);四川省农作物育种攻关计划(2021YFYZ0018);南充市基础研究平台(22JCYJPT0002);中央引导地方-区域体系建设(2024ZYD0308)


Identification and Evaluation Agronomic Characters and Late Leaf Spot Resistance of 120 Peanut Germplasm Resources
Author:
Affiliation:

1.Nanchong Academy of Agricultural Sciences, Nanchong637000,Sichuan;2.Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430000

Fund Project:

Foundation projects: National Peanut Industry Technical System (CARS-13); Sichuan Miaozi Project(2023JDRC0118); Sichuan Province Crop Breeding Program (2021YFYZ0018); Nanchong Basic Research Platform (22JCYJPT0002); Central Guidance for Local - Regional System Construction(2024ZYD0308)

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    摘要:

    为满足花生在产量和晚斑病抗性上的育种需求,本研究挑选南充市农业科学院种质资源库中120份国内代表性和国外引进的花生种质资源进行鉴定和评价。对16个性状进行表型调查,描述性统计结果显示,性状的变异系数在7.40%~47.65%之间,其中分枝数、单株饱果数、单株荚果数、单株生产力变异系数较大,荚果长、荚果宽和籽粒长、籽粒宽变异系数较小;相关性分析结果显示,主茎高和侧枝长呈极显著正相关,单株荚果数、单株饱果数与百果重、荚果长、荚果宽呈极显著负相关,晚斑病等级与侧枝长和分枝数呈极显著负相关。主成分分析将16个性状归为5个主成分,累计贡献率为85.013%。聚类分析将种质分为4个类群,第Ⅰ和Ⅱ类群为大果组,第Ⅲ和第Ⅳ类群为中小果组。基于5个主成分贡献率权重构建综合评分,筛选综合得分前10的种质资源,其中ICGV88938兼顾了高产和晚斑病抗性,于自然病圃筛选获得4份晚斑病抗性种质。本研究对120份种质的16个性状进行鉴定和评价,将为后续品种改良提供帮助。

    Abstract:

    To address the breeding needs of peanuts for higher yield and resistance to late leaf spot disease, 120 representative peanut germplasm resources were selected from the germplasm bank of Nanchong Academy of Agricultural Sciences for identification and evaluation. A phenotypic survey was conducted on 16 traits, and descriptive statistical results showed that the coefficients of variation of traits ranged from 7.40% to 47.65%. The variation coefficient of branch number, full pod number per plant, pod number per plant and yield per plant is larger, while the variation coefficient of the related traits of pod length, pod width, seed length and seed width were is smaller. Correlation analysis showed that stem height and branch length were positively correlated, pod number per plant, full pod number per plant were negatively correlated with hundred pod weight, pod length and pod width , and late leaf spot grade was negatively correlated with branch length and branch number. Principal component analysis categorized 16 traits into five principal components, with a cumulative contribution rate of 85.013%. The germplasm was divided into four groups by cluster analysis, the large pod group Ⅰ and Ⅱ, and the small and medium pod group Ⅲ and Ⅳ. A comprehensive score is constructed based on the contribution weights of five principal components, the top 10 germplasm resources with the highest comprehensive scores were selected, including ICGV88938 , which exihibited high yield and resistance to late leaf spot disease, four germplasm resources resistant to late spot disease were screened in a natural disease nursery. This study identified and evaluated 16 traits across 120 germplasm resources, thus providing valuable breeding materials and a theoretical foundation for future peanut variety improvement.

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王朝欢,游宇,张珍珍,等.120份花生种质资源农艺性状及晚斑病抗性鉴定与评价[J].植物遗传资源学报,2024,25(12):2149-2159.

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  • 收稿日期:2024-02-04
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  • 在线发布日期: 2024-12-06
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