长江流域棉区陆地棉品种的表型分析及综合评价
作者:
作者单位:

1.浙江农林大学现代农学院,杭州 311300;2.黄冈市农业科学院,湖北黄冈438000

作者简介:

研究方向为棉花遗传育种,E-mail: wangjiayi@stu.zafu.edu.cn

通讯作者:

喻树迅,研究方向为棉花遗传育种,E-mail: yushuxun@zafu.edu.cn
冯 震,研究方向为棉花遗传育种,E-mail: fengzhen@zafu.edu.cn

中图分类号:

基金项目:

国家自然科学基金(32301747)


Phenotypic Analysis and Comprehensive Evaluation of Upland Cotton in Yangtze River Region
Author:
Affiliation:

1.College of Advanced Agricultural Sciences,Zhejiang A&F University,Hangzhou 311300;2.Huanggang Academy of Agricultural Sciences,Huanggang 438000,Hubei

Fund Project:

Foundation project: National Natural Science Foundation of China(32301747)

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    摘要:

    为了解长江流域棉区棉花品种的品种特性,本研究收集了2001-2023年通过长江流域国家区试的100份棉花品种,并对其生育期和株高、产量相关性状、纤维品质相关性状进行了鉴定,发现长江流域棉区的品种选育总体呈现出生育期逐渐缩短、产量逐渐升高、纤维品质稳定改善的现象。采用聚类分析、相关性分析、主成分分析、综合评价的方法,对12个性状进行研究。结果显示,各性状的变异系数范围为3.06%~24.37%,遗传多样性指数在0.42~2.05之间,其中铃数的变异系数最大,子指与铃重的遗传多样性指数最高;聚类分析的结果表明,供试品种被分为3大类群,分别为产量与品质综合表现均较差的品种类群、低产优质的品种类群和高产低质的品种类群;相关性分析结果显示,生育期与大部分产量相关性状呈极显著正相关,与纤维长度、整齐度呈负相关;主成分分析结果表明,前3个主成分的累计贡献率达到70.23%,铃数、纤维强度与纤维长度是棉花出现表型变异的主要因素。对供试品种进行综合评价,发现各供试品种的得分在0.48~2.29之间,并筛选出综合得分前8以及2份早熟的综合表现优异的种质资源。本研究可为棉花的遗传改良提供一定参考,具有重要的理论和实践意义。

    Abstract:

    To elucidate the varietal characteristics of cotton varieties in Yangtze river region, 100 upland cotton of the national regis-tered varieties breeding from year of 2001 to 2023 were collected. Phenotypic identification was conducted for major agronomic traits, yield-related traits and fiber quality traits. It was found that the growth period was gradually shortened, the phenotypic values of yield-related traits were gradually increased, and the fiber quality was steadily improved in the cotton variety breeding in the Yangtze river region. Employing a suite of analytical methodologies, including clustering analysis, correlation analysis, principal component analysis (PCA), and comprehensive evaluation methods were employed to study 12 key traits. The results delineated a variation coefficient range from 3.06% to 24.37% across traits, alongside a genetic diversity index spanning 0.42 to 2.05. Notably, boll number exhibited the highest variation coefficient, while seed index and boll weight displayed the highest genetic diversity index. The results of cluster analysis showed that the tested varieties were divided into three groups, representing the varieties with poor yield and quality, the varieties with low yield but high fiber quality, and the varieties with high yield but low fiber quality. Correlation analysis indicated a significant positive correlation between the growth period and most yield-related traits, a negative correlation with fiber length and uniformity. PCA revealed that the cumulative contribution rate of the first three principal components at 70.23%, highlighting boll number, fiber strength, and fiber length as major factors contributing to phenotypic variation in cotton. Comprehensive evaluation scores ranged from 0.48 to 2.29, and the top 8 and 2 early maturing germplasm resources with excellent comprehensive performance were selected. The findings contribute valuable insights into the genetic improvement of cotton, offering both theoretical and practical significance.

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引用本文

汪佳怡,赵树琪,常辉,等.长江流域棉区陆地棉品种的表型分析及综合评价[J].植物遗传资源学报,2024,25(10):1661-1672.

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  • 收稿日期:2024-01-29
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  • 在线发布日期: 2024-10-09
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