Genetic diversity assessment towards core collection construction of Moroccan apricot (Prunus armeniaca L.) germplasm using genomic SSR markers

IF 2.7 3区生物学 Q2 PLANT SCIENCES South African Journal of Botany Pub Date : 2025-03-06 DOI:10.1016/j.sajb.2025.02.038

Jamal Ayour , Imane Elateri , Mohammed Alami , Hasnaâ Harrak , Mohamed N. Alfeddy , Jean-Marc Audergon , Catherine M.G.C. Renard , Mohamed Benichou

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Abstract

Strengthening the study of genetic diversity and population structure is crucial for the conservation and sustainable use of plant genetic resources. This study evaluated the genetic diversity and population structure of Moroccan apricot germplasm based on the geographical origins of 92 accessions and their agroecosystem conditions using 21 microsatellite markers. The analysis revealed high genetic diversity within each geographical origin (94%) and lower diversity between the 10 studied regions (6%). A total of 120 alleles were identified, averaging 5.71 alleles per locus, with BPPCT038 and BPPCT001 being, respectively, the most informative (11 alleles) and the least informative (2 alleles) primers. The genetic structure analysis divided the germplasm into two main populations: a predominant group linked to the Delpatriarca variety and a smaller and less diverse group associated with the Canino variety. Low genetic differentiation and significant gene flow between these populations, influenced by pollen dispersal, overlapping geographical origins, and human intervention, contributed to the observed structure of two gene pools. These findings simplify the management of Moroccan apricot genetic resources and highlight a population structure that could serve as a core collection summarising the diversity of Moroccan apricot germplasm.

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利用基因组SSR标记评价摩洛哥杏（Prunus armeniaca L.）种质资源核心种质构建的遗传多样性

加强对植物遗传多样性和种群结构的研究对植物遗传资源的保护和可持续利用至关重要。基于摩洛哥杏92份材料的地理来源及其农业生态系统条件，利用21个微卫星标记对摩洛哥杏种质资源的遗传多样性和群体结构进行了评价。分析显示，每个地理来源内的遗传多样性较高（94%），10个研究区域之间的遗传多样性较低（6%）。共鉴定出120个等位基因，平均每个位点有5.71个等位基因，其中BPPCT038和BPPCT001引物信息量最多（11个等位基因），信息量最少（2个等位基因）。遗传结构分析将种质资源分为两个主要群体：与Delpatriarca品种有关的优势群体和与Canino品种有关的较小且多样性较差的群体。受花粉传播、地理起源重叠和人为干预等因素的影响，这些种群之间的遗传分化程度低，基因流动显著，形成了两个基因库的结构。这些发现简化了摩洛哥杏遗传资源的管理，并突出了一个种群结构，可以作为概括摩洛哥杏种质资源多样性的核心集合。

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来源期刊

South African Journal of Botany 生物-植物科学

CiteScore

5.20

自引率

9.70%

发文量

709

审稿时长

61 days

期刊介绍： The South African Journal of Botany publishes original papers that deal with the classification, biodiversity, morphology, physiology, molecular biology, ecology, biotechnology, ethnobotany and other botanically related aspects of species that are of importance to southern Africa. Manuscripts dealing with significant new findings on other species of the world and general botanical principles will also be considered and are encouraged.