Genetic diversity among Ghanaian Okra (Abelmoschus esculentus L.) Germplasm using Morphological and Molecular markers

Q3 Agricultural and Biological Sciences

Ecological Genetics and Genomics Pub Date : 2025-04-05 DOI:10.1016/j.egg.2025.100347

Andrews Appiah , Richard Akromah , Alexander Wireko Kena , Benjamin Annor , Stephen Amoah , Emmanuel Yaw Owusu , Benjamin Karikari

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Abstract

Knowledge of genetic diversity among germplasm is a prerequisite in any crop improvement programme. The present study, therefore, aimed to determine the extent of genetic variability and relationship in Ghanaian okra genotypes using morphological and simple sequence repeats (SSR) markers. A total of 40 okra accessions were collected from all agro-ecological zones of Ghana and evaluated under optimal conditions in Ghana in 2020 using alpha lattice design. Analysis of variance revealed significant (p < 0.01) variations among the genotypes for all traits studied, indicating high variability among the genotypes studied which could be exploited to develop improved okra varieties. Genotypes: Avata, Ayigbe, Baabo, Sunyani aba and Ponana ponana were identified as the superior genotypes which could further be tested and promoted among farmers. The 40 okra accessions were classified into four (4) major clusters based on the morphological traits as well as the SSR markers. The most discriminating traits identified by the principal component analysis were days to first flowering, days to first fruiting, first flowering node, fruit width, fruit yield, plant height at first flowering, leaf breadth, leaf length and the number of internodes. The findings from this study provide valuable information for okra conservation, breeding, and utilization.

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加纳秋葵的遗传多样性利用形态和分子标记分析种质资源

了解种质间的遗传多样性是任何作物改良计划的先决条件。因此，本研究旨在利用形态和简单序列重复（SSR）标记确定加纳秋葵基因型的遗传变异程度和关系。采用阿尔法格设计对2020年加纳所有农业生态区40份秋葵进行了最优条件下的评价。方差分析显示显著(p <；各性状基因型间差异均为0.01)，表明各基因型间差异较大，可用于秋葵品种改良。基因型：Avata、Ayigbe、Baabo、Sunyani aba和Ponana Ponana为优势基因型，可在农户中进一步检验和推广。根据形态性状和SSR标记将40份秋葵材料划分为4个主要聚类。主成分分析鉴定出的最具鉴别性的性状为初花期、初果期、初花期、果宽、果产量、初花期株高、叶宽、叶长和节间数。本研究结果为秋葵的保护、育种和利用提供了有价值的信息。

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来源期刊

Ecological Genetics and Genomics Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics

CiteScore

1.80

自引率

0.00%

发文量

期刊介绍： Ecological Genetics and Genomics publishes ecological studies of broad interest that provide significant insight into ecological interactions or/ and species diversification. New data in these areas are published as research papers, or methods and resource reports that provide novel information on technologies or tools that will be of interest to a broad readership. Complete data sets are shared where appropriate. The journal also provides Reviews, and Perspectives articles, which present commentary on the latest advances published both here and elsewhere, placing such progress in its broader biological context. Topics include: -metagenomics -population genetics/genomics -evolutionary ecology -conservation and molecular adaptation -speciation genetics -environmental and marine genomics -ecological simulation -genomic divergence of organisms