辣椒地方品种和创新种质的遗传比较分析
DOI:
作者:
作者单位:

江汉大学 生命科学学院/湖北省豆类蔬菜植物工程技术研究中心/湖北省食用豆类自然科技资源中心

作者简介:

通讯作者:

中图分类号:

基金项目:

湖北省技术创新专项(重大项目)(2017 ABA 147);湖北省教育厅百校联百县项目(BXLBX 0360,BXLBX 0361)


Genetic comparative studies on innovated germplasm and local varieties of chili peppers
Author:
Affiliation:

School of Life Sciences,Jianghan University/Hubei Province Engineering Research Center for Legume Plants/Hubei Province Natural Science Resource Center of Edible Legume

Fund Project:

Hubei Province Technical Innovation Special Project (Major Project)(2017 ABA 147);Hubei Provincial Department of Education's Hundred Schools and Hundred Counties Project(BXLBX 0360,BXLBX 0361)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    试验观测了辣椒地方品种和创新种质的12个性状以及基因组DNA的SSR分子标记信息,进行了遗传相关分析和多样性评价。结果表明:地方品种和创新种质两个群体的12个性状均呈显著差异(P≦0.05),其性状变异系数变幅分别为1.15%~50.02%和3.27%~60.67%,以地方品种维生素C含量变异最大;其广义遗传力分别在79.24%~99.23%和87.73%~98.80%范围,说明性状主要由遗传决定;两群体间性状分化系数在1.30%~48.95%区间,其中花色苷含量为分化明显的性状,株高分化不明显;两两性状间有22个达到显著相关水平(P≦0.05);主成分分析筛选出10份特异资源;精选出20个SSR有效引物对,PCR扩增出68个多态性位点,多态比例为69.39%,以地方品种的多态性位点居多,但是在创新种质‘PP1122’中出现1个特异性位点,还根据分子标记进行了基因分型和遗传多态性评价;基于12个性状和分子标记数据进行的聚类分析,可将供试种质划分为3个类群,地方品种聚集在类群Ⅰ,创新种质聚集在类群Ⅱ,类群Ⅲ仅含‘PP1122’种质,该种质植株叶片大、长势旺、果实大、果皮紫色且营养成分含量高等,说明创新种质与地方品种亲缘关系较远,利用种质‘紫彩椒’和‘红辣椒809’等不同类群品种的杂交有利于拓展辣椒种质的遗传背景。本研究为辣椒种质创新和品种遗传改良提供参考。

    Abstract:

    12 traits and SSR molecular marker information of genomic DNA of local pepper varieties and innovative pepper germplasm were observed in the experiment, and genetic correlation analysis and diversity evaluation were conducted. The results show that: 12 traits in the two populations of local pepper varieties and innovative pepper germplasm were significantly different(P≦0.05), and the variation coefficient of the traits ranged from 1.15%-50.02% and 3.27%-60.67% respectively, with the local varieties of vitamin C showing the highest variations; The broad-sense heritabilities were in the ranges of 87.73%-98.80% and 79.24%-99.23% respectively, indicating that the traits were mainly determined by genetics; Traits differentiation coefficients between the two populations were in the range of 1.30%-48.95% respectively, of which anthocyanin content was the trait with obvious differentiation, while plant height had no obvious differentiation; 22 reached the level of significant correlation between the traits (P≦0.05); 10 specific resources were screened out by principal components. 20 effective primer pairs of SSRs were selected, and the PCR amplification identified 68 polymorphic loci, the polymorphism ratio was 69.39%, with the polymorphic loci of local varieties in the majority. However, one specific locus in innovated germplasm ' PP1122 ', and genotyping and genetic polymorphism evaluation were performed according to molecular markers. Based on the clustering analysis of the 12 traits and molecular markers information, germplasm for test can be divided into three groups, local varieties clustered in group I, innovative germplasm clustered in group II, and group III, only contained 'PP1122' germplasm, which had large leaves, vigorous fruit, purple peel and high nutrient content, and indicates that the innovative germplasm has a relatively distant relationship with local varieties, The hybridization of different groups of varieties such as 'Purple colored pepper' and 'Red pepper 809' was beneficial to expand the genetic background of pepper germplasm. This study provides a for pepper germplasm innovation and a variety of genetic improvements.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2024-01-08
  • 最后修改日期:2024-04-17
  • 录用日期:2024-07-17
  • 在线发布日期:
  • 出版日期:
您是第位访问者
ICP:京ICP备09069690号-23
京ICP备09069690号-23
植物遗传资源学报 ® 2024 版权所有
技术支持:北京勤云科技发展有限公司