首页 正文

Genetics and molecular research : GMR. 2015 Mar 6;14(1):1557-65. doi: 10.4238/2015.March.6.3 N/A0.62024

Heterozygosities and genetic relationship of tea cultivars revealed by simple sequence repeat markers and implications for breeding and genetic mapping programs

基于SSR标记的茶树品种杂合度及亲缘关系分析及其在育种和遗传图谱构建中的应用意义 翻译改进

L Q Tan  1, C C Zhang  2, G N Qi  3, L Y Wang  2, K Wei  2, S X Chen  1, Y Zou  1, L Y Wu  2, H Cheng  2

作者单位 +展开

作者单位

  • 1 Tea Science Department, College of Horticulture, Sichuan Agricultural University, Ya'an, Sichuan, China.
  • 2 National Center for Tea Improvement, Tea Research Institute, Chinese Academy of Agricultural Science, Hangzhou, Zhejiang, China.
  • 3 Tea Science Department, College of Horticulture, Sichuan Agricultural University, Ya'an, Sichuan, China guinian5612@163.com.
  • DOI: 10.4238/2015.March.6.3 PMID: 25867299

    摘要 Ai翻译

    Genetic maps are essential tools for quantitative trait locus analysis and marker-assisted selection breeding. In order to select parents that are highly heterozygous for genetic mapping, the heterozygosity (HS) of 24 tea cultivars (Camellia sinensis) was analyzed with 72 simple sequence repeat markers. In total, 359 alleles were obtained with an average of 4.99 per marker. The HS varied greatly from 37.5 to 71.0% with an average of 51.3%. On average, tea cultivars from Fujian Province showed a higher level of heterozygosity (59.8%) than those from Zhejiang (48.5%) and Yunnan (44.5%), and the 12 national tea cultivars were generally more heterozygous than the 12 provincial cultivars. Unweighted pair-group analysis using the arithmetic average grouping divided the 24 cultivars into 2 groups that are consistent with the morphological classification. All dual combinations of the 24 cultivars were studied to calculate the percentage of mappable markers when using pseudo-testcross mapping strategy, and results showed that this value also varied greatly from 51.4 to 90.3%. The genetic relationships and HS differences among different cultivars were discussed, and tea cultivars with high HS were recommended as cross parents for genetic mapping programs.

    Keywords:tea cultivars; heterozygosities; genetic relationship

    Copyright © Genetics and molecular research : GMR. 中文内容为AI机器翻译,仅供参考!

    相关内容

    期刊名:Genetics and molecular research

    缩写:

    ISSN:1676-5680

    e-ISSN:

    IF/分区:0.6/N/A

    文章目录 更多期刊信息

    全文链接
    引文链接
    复制
    已复制!
    推荐内容
    Heterozygosities and genetic relationship of tea cultivars revealed by simple sequence repeat markers and implications for breeding and genetic mapping programs