对极为多样化的摩洛哥当地杏仁栽培品种进行分析,为保护和育种提供了重要资源

IF 1.6 3区 农林科学 Q2 AGRONOMY
Souhayla Kodad, Christina M. Müller, Mohammad Jawarneh, Annette Becker, Moritz Sanne, Alexander Pfriem, Ahmed Elamrani, Aatika Mihamou, Malika Abid
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引用次数: 0

摘要

杏仁(Prunus amygdalus L.)是一种主要的木本坚果,全世界都在食用。摩洛哥驯化杏仁的历史悠久,是次生遗传多样性的热点地区,需要作为未来杏仁育种计划的重要资源加以保护。在此,我们对当地贝尔迪杏仁生态型的果实多样性进行了评估,以便根据坚果和核仁的特征发现精英树种。在一些研究变量之间发现了明显的相关性。数量性状的主成分分析(PCA)显示,两个成分解释了总变异的 78.91%,并揭示出与果实相关的性状在观察到的变异中占了很大比例。然后,通过分析 12 个简单序列重复标记,对 98 个杏仁品种(包括 93 个贝尔迪生态型品种和 5 个非摩洛哥栽培品种)进行了综合遗传研究,结果显示多态性信息含量很高。我们利用种群结构和 PCA 分析了分子变异,并描述了已确定亚种群的遗传多样性。我们发现五个亚群的遗传差异很小,但有两个亚群的遗传多样性很高。这些亚群代表着有潜力的基因库,可培育出在不利条件下仍能提供高产的新型杏仁栽培品种,从而促进摩洛哥可持续杏仁农业育种项目的盈利。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Analysis of the extremely diverse local Moroccan almond cultivars provides essential resources for conservation and breeding

Analysis of the extremely diverse local Moroccan almond cultivars provides essential resources for conservation and breeding

Almond (Prunus amygdalus L.) is a major tree nut species and consumed worldwide. Morocco maintains a long-standing presence of domesticated almonds, hosting a secondary genetic diversity hotspot that demands safeguarding as an important resource for future almond breeding programs. Here, we assessed the pomological diversity of local Beldi almond ecotypes to detect elite trees based on nuts and kernels characteristics. A significant correlation was found among some studied variables. Principal Component Analysis (PCA) for quantitative traits showed that two components explained 78.91% of the total variation and revealed that traits related to fruits contribute to a large proportion of the observed variability. Then, a comprehensive genetic study of 98 almond accession including 93 of the Beldi ecotype and five non-Moroccan cultivars by analyzing 12 Simple Sequence Repeats markers showed high Polymorphism Information Content. We used population structure and PCA to analyze the molecular variance and described the genetic diversity of the identified subpopulations. We identified five subpopulations with little genetic differentiation, but two subpopulations have high genetic diversity. These subpopulations represent promising genetic pools developing novel almond cultivars that can provide high yield in adverse conditions, thereby fostering profitable Moroccan breeding programs for sustainable almond agriculture.

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来源期刊
Genetic Resources and Crop Evolution
Genetic Resources and Crop Evolution 农林科学-农艺学
CiteScore
4.10
自引率
10.00%
发文量
178
审稿时长
3 months
期刊介绍: Genetic Resources and Crop Evolution is devoted to all aspects of plant genetic resources research. It publishes original articles in the fields of taxonomical, morphological, physiological, biochemical, genetical, cytological or ethnobotanical research of genetic resources and includes contributions to gene-bank management in a broad sense, that means to collecting, maintenance, evaluation, storage and documentation. Areas of particular interest include: -crop evolution -domestication -crop-weed relationships -related wild species -history of cultivated plants including palaeoethnobotany. Genetic Resources and Crop Evolution also publishes short communications, e.g. newly described crop taxa, nomenclatural notes, reports of collecting missions, evaluation results of gene-bank material etc. as well as book reviews of important publications in the field of genetic resources. Every volume will contain some review articles on actual problems. The journal is the internationalized continuation of the German periodical Die Kulturpflanze, published formerly by the Institute of Plant Genetics and Crop Plant Research at Gatersleben, Germany. All contributions are in the English language and are subject to peer reviewing.
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