Genetic diversity in Pima (Gossypium barbadense L.) and advanced interspecific hybrids (Gossypium hirsutum x Gossypium barbadense) of cotton germplasm in Ethiopia

IF 2.2 Q3 GENETICS & HEREDITY Plant Gene Pub Date : 2024-05-31 DOI:10.1016/j.plgene.2024.100458

Donis Gurmessa , Kassahun Bantte , Kefyalew Negisho

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Abstract

This study was conducted to assess the genetic diversity in Pima (Gossypium barbadense L.) and advanced interspecific hybrids (G. hirsutum L. x G. barbadense L.) of cotton germplasm in Ethiopia. A total of 26 germplasm were genotyped using 26 polymorphic simple sequence repeat (SSR) markers. A total of 165 polymorphic loci, with a range of 3 to 13 alleles and a mean of 6.35 per marker were detected. About 11% of total alleles were unique alleles in 11 germplasm. The gene diversity varied from 0.39 to 0. 89, while the heterozygosity was in the range of 0 to 1.00. Furthermore, the polymorphic information content of the markers varied from 0.37 (BNL1417) to 0.88 (BNL1672) with an average of 0.68. Among the complete panel of cotton germplasm used in this study, the pairwise genetic distance ranged from 0.08 to 0.94, with an overall mean of 0.61. The UPGMA cluster analysis grouped the Pima cotton germplasm into two cluster groups and the advanced interspecific hybrid cotton germplasm makes one cluster. Principal coordinate analysis indicates that the first three most informative principal coordinates explained 68.4% of the genetic variation. The result evidenced very low to high genetic dissimilarity and overall, a considerable genetic diversity among and within germplasm which could be used to further broaden the genetic base and to enlarge the number of available cotton germplasm.

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埃塞俄比亚棉花种质中皮马（Gossypium barbadense L.）和高级种间杂交种（Gossypium hirsutum x Gossypium barbadense）的遗传多样性

本研究旨在评估埃塞俄比亚棉花种质皮马（Gossypium barbadense L.）和高级种间杂交种（G. hirsutum L. x G. barbadense L.）的遗传多样性。使用 26 个多态性简单序列重复（SSR）标记对 26 个种质进行了基因分型。共检测到 165 个多态位点，等位基因范围为 3 至 13 个，平均每个标记 6.35 个等位基因。在 11 个种质中，约 11% 的等位基因是独特的等位基因。基因多样性在 0.39 至 0.89 之间，杂合度在 0 至 1.00 之间。此外，标记的多态信息含量从 0.37（BNL1417）到 0.88（BNL1672）不等，平均为 0.68。在本研究使用的完整棉花种质群中，成对遗传距离介于 0.08 至 0.94 之间，总体平均值为 0.61。UPGMA 聚类分析将皮马棉种质分为两个聚类组，将高级种间杂交棉种质分为一个聚类组。主坐标分析表明，前三个信息量最大的主坐标解释了 68.4% 的遗传变异。结果表明，种质之间和种质内部的遗传相似性从低到高不等，总体上具有相当大的遗传多样性，可用于进一步扩大遗传基础和增加可用棉花种质的数量。

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来源期刊

Plant Gene Agricultural and Biological Sciences-Plant Science

CiteScore

4.50

自引率

0.00%

发文量

审稿时长

51 days

期刊介绍： Plant Gene publishes papers that focus on the regulation, expression, function and evolution of genes in plants, algae and other photosynthesizing organisms (e.g., cyanobacteria), and plant-associated microorganisms. Plant Gene strives to be a diverse plant journal and topics in multiple fields will be considered for publication. Although not limited to the following, some general topics include: Gene discovery and characterization, Gene regulation in response to environmental stress (e.g., salinity, drought, etc.), Genetic effects of transposable elements, Genetic control of secondary metabolic pathways and metabolic enzymes. Herbal Medicine - regulation and medicinal properties of plant products, Plant hormonal signaling, Plant evolutionary genetics, molecular evolution, population genetics, and phylogenetics, Profiling of plant gene expression and genetic variation, Plant-microbe interactions (e.g., influence of endophytes on gene expression; horizontal gene transfer studies; etc.), Agricultural genetics - biotechnology and crop improvement.