Genetic diversity and population relationships in wild Korean black raspberry (Rubus coreanus Miq.) based on microsatellite markers: establishing a fruit tree breeding strategy

IF 2.4 3区 农林科学 Q1 Agricultural and Biological Sciences
Sung-Kyung Han, Hanna Shin, Jei-Wan Lee, Kyung-Nak Hong, Ji-Young Ahn
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引用次数: 0

Abstract

The importance of involving genetic diversity in breeding has been emphasized for the sustainable and stable utilization of crop genetic resources and preparation for unpredictable future environments. The black raspberry fruit from the genus Rubus is highly consumed owing its flavor and health benefits, but the genetic basis of its cultivars is very limited with insufficient genetic information available. Therefore, breeding programs must focus on the exploitation of genetic diversity of wild crop relatives. We assessed the genetic diversity, population differentiation, and genetic structure of 11 wild relatives of R. coreanus Miq. using 10 microsatellite markers to collect valuable genetic information and propose enhanced strategies for development of breeding populations. The observed and expected heterozygosity were 0.493 and 0.520, respectively. Genetic differentiation among the populations was 0.109. The Mantel test confirmed that wild R. coreanus populations differentiated following isolation by distance. Moreover, Bayesian clustering analysis showed that R. coreanus populations consisted of three genetic clusters, distribution of those showed a geographical tendency. Based on the genetic diversity, private allele frequency, and genetic structure results, we suggest to preferentially include the Chiak, Hamyang, and Jeju populations for construction of a breeding population of the Korean black raspberry.

Abstract Image

基于微卫星标记的韩国野生黑树莓(Rubus coreanus Miq.)的遗传多样性和种群关系:建立果树育种战略
为了可持续和稳定地利用作物遗传资源,并为不可预测的未来环境做好准备,在育种过程中涉及遗传多样性的重要性已得到强调。茜草属的黑树莓果实因其风味和保健作用而被大量食用,但其栽培品种的遗传基础非常有限,可获得的遗传信息不足。因此,育种计划必须侧重于利用野生作物近缘种的遗传多样性。我们利用 10 个微卫星标记评估了 11 种野生近缘植物的遗传多样性、种群分化和遗传结构,以收集有价值的遗传信息,并为育种种群的发展提出改进策略。观察到的杂合度和预期杂合度分别为 0.493 和 0.520。种群间的遗传差异为 0.109。曼特尔(Mantel)检验证实,野生 R. coreanus 种群是在距离隔离后出现分化的。此外,贝叶斯聚类分析显示,R. coreanus种群由三个遗传聚类组成,这些聚类的分布呈现地理倾向。根据遗传多样性、私有等位基因频率和遗传结构结果,我们建议在构建韩国黑树莓育种种群时优先选择Chiak、Hamyang和Jeju种群。
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来源期刊
Horticulture Environment and Biotechnology
Horticulture Environment and Biotechnology Agricultural and Biological Sciences-Horticulture
CiteScore
4.30
自引率
4.20%
发文量
0
审稿时长
6 months
期刊介绍: Horticulture, Environment, and Biotechnology (HEB) is the official journal of the Korean Society for Horticultural Science, was launched in 1965 as the "Journal of Korean Society for Horticultural Science". HEB is an international journal, published in English, bimonthly on the last day of even number months, and indexed in Biosys Preview, SCIE, and CABI. The journal is devoted for the publication of original research papers and review articles related to vegetables, fruits, ornamental and herbal plants, and covers all aspects of physiology, molecular biology, biotechnology, protected cultivation, postharvest technology, and research in plants related to environment.
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