213份海岛棉种质资源的遗传多样性分析
作者:
作者单位:

1.新疆农业大学农学院/作物遗传改良与种质创新重点实验室,乌鲁木齐 830052;2.新疆金丰源种业有限公司,阿克苏 843100;3.新疆维吾尔自治区农业农村厅种业发展中心,乌鲁木齐 830001

作者简介:

研究方向为棉花遗传育种,E-mail:760631995@qq.com

通讯作者:

郑 凯,研究方向为棉花分子育种,E-mail:zhengkai555@126.com
陈全家,研究方向为棉花遗传育种,E-mail:chqjia@126.com

中图分类号:

基金项目:

新疆长绒棉育种联合攻关项目(2022MH-01);“天山英才”培养计划项目(2023TSYCLJ0012)


Genetic Diversity Analysis of 213 Gossypium barbadense L. Germplasm Resources
Author:
Affiliation:

1.College of Agriculture, Xinjiang Agricultural University/Key Laboratory of Crop Genetic Improvement and Germplasm Innovation, Urumqi 830052;2.Xinjiang Jinfengyuan Seed Industry Co. , Ltd. , Aksu 843100;3.Seed Industry Development Center,Department of Agriculture and Rural Affairs of Xinjiang, Urumqi 830001

Fund Project:

Foundation projects: Xinjiang Long-staple Cotton Breeding Joint Research Project(2022MH-01);"Tianshan Talents" Training Program Project(2023TSYCLJ0012)

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    摘要:

    以213份海岛棉种质为材料,测定了2年3个环境点(2022年库尔勒市、2022年阿瓦提县、2023阿瓦提县)4个花性状以及2023年阿瓦提县环境点的海岛棉不同生育时期的41个性状(26个数量性状和15个质量性状),分析自然高温对海岛棉的影响,并通过遗传多样性分析、主成分分析、相关性分析、聚类分析、多元回归分析、综合评价值等方法对213份海岛棉种质资源进行综合评价。结果显示,4个花性状均易受到环境影响,其中花药对高温天气最为敏感。41个性状的遗传多样性指数在0.030~2.139之间,26个数量性状的变异系数在2.70%~30.83%之间,说明供试的海岛棉资源遗传类型较为丰富。26个数量性状提取到9个主成分,累计贡献率74.969%,依据特点分为产量构成因子、植株生长因子、植株授粉因子等。通过多元回归分析发现其他25个数量性状与花粉活力、蕾铃脱落率相关性均不高,花粉活力与蕾铃脱落率之间的解释率也不高。利用26个数量性状进行聚类分析,213份资源可划分为5类,包括16份综合性状优良的高产材料、122份以花大叶多为特征的花性状优良材料、44份纤维品质较优的材料、29份营养器官表现较突出的材料,以及2份拥有较高花粉活力的珍稀材料。基于两个耐高温性状(花粉活力、蕾铃脱落率)的聚类则将其分为3组:102份高花粉活力低蕾铃脱落率材料、63份中花粉活力中蕾铃脱落率材料以及48份低花粉活力高蕾铃脱落率材料。两种聚类最优类群(均为第Ⅰ类群)存在交集的材料有7份(GB24、GB42、GB195、GB200、GB204、GB205和GB206)。本研究结果可为海岛棉优异种质资源的挖掘及种质创新提供理论依据。

    Abstract:

    Using 213 samples of Gossypium barbadense L. as material, four floral traits in three environmental locations (Korla in 2022, Awati County in 2022, and Awati County in 2023) and 41 characters (26 quantitative traits and 15 quality traits) in different growth stages of Gossypium barbadense L. in 2023 environmental locations were determined. Genetic diversity analysis, principal component analysis, correlation analysis, cluster analysis, multiple regression analysis and comprehensive value evaluation were used to evaluate the germplasm resources of 213 Gossypium barbadense L.. These four floral traits were highly susceptible to environment influences, with the anther being particularly sensitive to high-temperature stress. The genetic diversity index of the 41 traits ranged from 0.030 to 2.139, and the variation coefficient of 26 quantitative traits ranged from 2.70% to 30.83%, indicating that the relatively rich genetic diversity. Nine principal components were extracted from the 26 quantitative traits, with a cumulative contribution rate of 74.969%, which were divided into yield component factors, plant growth factors, and plant pollination factors based on their attributes. Multiple regression analysis indicated that the correlation between the quantitative traits used in the test, if compared to pollen viability and the rate of boll shedding was not significant. Using 26 quantitative traits for cluster analysis, 213 resources can be divided into 5 categories:16 high-yield genotypes with excellent overall characteristics, 122 genotypes with excellent floral traits characterized by large flower leaves, 44 materials with commendable fiber quality, 29 genotypes with prominent vegetative organs, and two genotypes with higher pollen activity. Based on the clustering of two high temperature tolerance traits (pollen viability and boll shedding rate), they were divided into three groups: 102 genotypes with high pollen viability and low boll shedding rate, 63 genotypes with medium pollen viability and 48 genotypes with low pollen viability and high boll shedding rate. There were seven genotypes in the intersection of the two optimal clustering groups. These results provided a theoretical basis for future exploration and germplasm innovation of Gossypium barbadense L..

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李江博,叶盛,常国斌,等.213份海岛棉种质资源的遗传多样性分析[J].植物遗传资源学报,2024,25(11):1857-1869.

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  • 收稿日期:2024-02-23
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  • 在线发布日期: 2024-11-07
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