西藏加查核桃仁的营养质量评价和遗传多样性分析

IF 3.9 2区农林科学 Q1 HORTICULTURE

Scientia Horticulturae Pub Date : 2025-02-01 DOI:10.1016/j.scienta.2025.113966

Yansheng Xue , Shang Gao , Hao Du , Hejuan Gong , Xianchen Bu , Jiabao Ye , QiJian Wang , Feng Xu

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引用次数: 0

摘要

在西藏，核桃（Juglans regia L.）树的种子繁殖已有一千多年的历史，在海拔3000米以上的多变气候条件下也能茁壮成长。本研究对175种核桃的营养质量进行了综合评价，确定了表现最好的品种。此外，还利用20个SSR位点对核桃的遗传多样性程度和亲缘关系进行了评价。通过主成分分析综合评价，核桃JC174、JC170、JC126位居前三位。共鉴定出319个等位基因，筛选出SSR6等7个高多态性位点进行进一步研究。遗传多样性分析表明，嘉茶核桃的遗传变异主要发生在个体间，种群可分为两个不同的类群。本研究为西藏地区核桃产业的发展提供了有价值的理论见解和实践依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Nutritional quality evaluation and genetic diversity analysis of walnut nuts in Jiacha, Tibet

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Nutritional quality evaluation and genetic diversity analysis of walnut nuts in Jiacha, Tibet

Walnut (Juglans regia L.) trees have been seed-propagated for over a thousand years in Tibet, thriving under variable climatic conditions at altitudes exceeding 3,000 m. This study conducted a comprehensive evaluation of the nutritional quality of 175 walnuts, identifying the highest-performing accessions. Additionally, 20 simple sequence repeat (SSR) loci were employed to assess the extent of genetic diversity and the genetic relationships among the walnuts. The walnut JC174, JC170, and JC126 were ranked among the top three based on a comprehensive evaluation using principal component analysis. A total of 319 alleles were identified, and seven highly polymorphic loci, including SSR6, were selected for further study. The genetic diversity analysis indicated that the majority of genetic variation in Jiacha walnuts was observed among individuals, leading to the division of the population into two distinct groups. This study provides valuable theoretical insights and practical foundations for the advancement of the walnut industry in the Tibetan region.

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来源期刊

Scientia Horticulturae 农林科学-园艺

CiteScore

8.60

自引率

4.70%

发文量

796

审稿时长

47 days

期刊介绍： Scientia Horticulturae is an international journal publishing research related to horticultural crops. Articles in the journal deal with open or protected production of vegetables, fruits, edible fungi and ornamentals under temperate, subtropical and tropical conditions. Papers in related areas (biochemistry, micropropagation, soil science, plant breeding, plant physiology, phytopathology, etc.) are considered, if they contain information of direct significance to horticulture. Papers on the technical aspects of horticulture (engineering, crop processing, storage, transport etc.) are accepted for publication only if they relate directly to the living product. In the case of plantation crops, those yielding a product that may be used fresh (e.g. tropical vegetables, citrus, bananas, and other fruits) will be considered, while those papers describing the processing of the product (e.g. rubber, tobacco, and quinine) will not. The scope of the journal includes all horticultural crops but does not include speciality crops such as, medicinal crops or forestry crops, such as bamboo. Basic molecular studies without any direct application in horticulture will not be considered for this journal.