基于主要农艺性状的686份红花种质资源遗传多样性分析
作者:
作者单位:

1.新疆农业科学院经济作物研究所,乌鲁木齐830091;2.新疆农业大学农学院,乌鲁木齐830000;3.伊犁师范大学生物科学与技术学院,新疆伊犁835000;4.塔城地区农业推广站,新疆塔城834700

作者简介:

研究方向为红花遗传育种,E-mail:hou544805196@163.com

通讯作者:

贾东海,研究方向为油料作物育种与栽培,E-mail:jiadonghai@sina.cn
李 强,研究方向为油料作物育种与栽培,E-mail:lq19820302@126.com

中图分类号:

基金项目:

新疆维吾尔自治区重大科技专项(2022A03004-4)


Genetic Diversity Analysis of 686 Safflower (Carthamus tinctorius L.) Germplasm Accessions Based on Agronomic Traits
Author:
Affiliation:

1.Economic Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi 830091;2.College of Agriculture, Xinjiang Agricultural University, Urumqi 830000;3.College of Biological Sciences and Technology, Yili Normal University, Yili 835000, Xinjiang;4.Tacheng Agricultural Technology Extension Center Station, Tacheng 834700, Xinjiang

Fund Project:

Foundation project:Major Science and Technology Project of Xinjiang(2022A03004-4)

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    摘要:

    通过变异系数、相关性分析、主成分分析和聚类分析等方法,对686份红花种质资源进行遗传多样性分析及综合评价,为新疆红花品种选育奠定基础。供试材料的11个农艺性状变异系数介于12.72%~44.80%,说明红花种质资源存在丰富的变异。3个质量性状遗传多样性指数范围介于0.75~1.04。相关性分析表明,单株产量与株高、一级分枝数、二级分枝数、单株果球数、顶球直径及每果粒数均呈极显著正相关。聚类分析在平方欧氏距离为7.5时,将种质资源划分为4个类群,其中第Ⅳ类群的单株产量和千粒重表现优异。主成分分析表明,5个主成分的累计贡献率达78.838%,叶缘、叶刺、单株果球数、每果粒数和千粒重为红花表型变异的主要因素。综合评价筛选出3份优异种质,分别为合肥红花(220657)、78-1(220675)、临泉红花(220683),其中临泉红花(220683)千粒重较大(53.42 g),可作为高产型亲本材料。本研究686份红花种质资源具有丰富的遗传多样性,可为后续选育红花新品种提供基础材料。

    Abstract:

    The genetic diversity analysis and comprehensive evaluation of 686 safflower germplasm accessions were conducted via investigating the phenotypic variations, followed by the coefficient of variation, correlation analysis, principal component analysis, and cluster analysis, aiming to provide a foundation for safflower breeding in Xinjiang, P.R. China. The coefficient of variation of 11 agronomic characters ranged from 12.72% to 44.80%, indicating rich variations at these traits in the collection. The genetic diversity index of the three quality traits ranged from 0.75 to 1.04. Correlation analysis showed that yield per plant was significantly positively correlated with plant height, number of primary branches, number of secondary branches, individual bulb number, head ball diameter and total number of per fruit. When the genetic distance of 7.5 applied, the germplasm resources were clustered into four groups, in which the yield per plant and thousand grain weight of group IV were excellent. Principal component analysis showed that the cumulative contribution rate of the five principal component factors was 78.838%. Among them, leaf margin, leaf spines, individual bulb number, total number of per fruit, and thousand grain weight were the main factors contributing to the phenotypic differences of safflower. Three elite germplasm Hefeihonghua (220657), 78-1 (220675) and Linquanhonghua (220683) were identified by comprehensive evaluation, among which Linquanhonghua (220683) showed a higher 1000-grain weight (53.42g), serving as parental line in high-yield breeding. Collectively, this study showed rich genetic diversity of 686 safflower germplasm resources, which could provide basic materials in breeding for new safflower varieties.

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侯献飞,张云,刘雨馨,等.基于主要农艺性状的686份红花种质资源遗传多样性分析[J].植物遗传资源学报,2024,25(9):1468-1479.

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  • 收稿日期:2023-12-15
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  • 在线发布日期: 2024-09-02
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