Inheritance analysis of sugar and organic acid components in blueberry hybrid progenies

IF 4.2 2区农林科学 Q1 HORTICULTURE

Scientia Horticulturae Pub Date : 2025-08-01 DOI:10.1016/j.scienta.2025.114345

Li Chen , Tongji Lou , Kexin Dong , Mei Dong , Haiyue Sun , Jiali Che , Shufang Yang , Jing Li , Yadong Li

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Abstract

Blueberry is a small berry species of high economic value that has experienced rapid development in recent years. The composition and content of sugar and acid are critical determinants of fruit flavor. To investigate the genetic principles of sugar and acid components in blueberry fruits, three varieties with distinct flavor profiles were pairwise crossed, and the content of sugar and acid components in all progeny and parents was determined. The results showed that the glucose content was higher than that of fructose, and the combined proportion of these two sugars exceeding 95 %. Citric acid and quinic acid were identified as the major acids, and the parents and offspring could be categorized into two primary groups: a citric acid-dominant group and a quinic acid-dominant group. The variation coefficient of the main acids (38.95 % and 65.33 %) was higher than that of the main sugars (14.37 % and 16.55 %). The high H² values for glucose and fructose (0.80 and 0.83) suggested their genetic inheritance was relatively stable. Glucose and fructose exhibited similar inheritance patterns. The negative average R_Hm values and the relatively high LL values—63.5 % for glucose and 39.8 % for fructose—suggested a declining trend of these traits. Moreover, when a high-glucose or high-fructose variety was used as the maternal parent, the average glucose or fructose content in the offspring was higher than that observed in reciprocal crosses, indicating that the selection of maternal parent during the breeding process has important effects on these traits. Quinic acid also exhibited maternal inheritance, whereas citric acid and malic acid did not display this pattern of inheritance. In all combinations, the Ta value exceeded 1, and HM % ranged from 57 % to 81 %, indicating citric acid exhibited transgressive inheritance. The mixed major gene and polygene inheritance model analysis was performed. It was found that, the majority of the combined genetic models for glucose, fructose, and citric acid were found to be 2MG-AD, governed by two pairs of additive and dominant genes. Notably, the additive effect was more significant than the dominant effect, while the heritability of major genes exhibited substantial variation across different parental combinations. This study will establish a foundation for parental selection in hybridization and accelerate the process of blueberry breeding.

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蓝莓杂交后代糖和有机酸成分的遗传分析

蓝莓是近年来发展迅速的一种具有较高经济价值的小型浆果品种。糖和酸的组成和含量是决定水果风味的关键因素。为研究蓝莓果实中糖和酸成分的遗传规律，对3个风味性状不同的蓝莓品种进行了两两杂交，测定了其后代和亲本中糖和酸成分的含量。结果表明，葡萄糖含量高于果糖，两种糖的组合比例超过95%。柠檬酸和奎宁酸为主要酸类，亲本和子代可分为柠檬酸优势群和奎宁酸优势群。主要酸的变异系数（38.95%和65.33%）高于主要糖的变异系数（14.37%和16.55%）。葡萄糖和果糖的H2值较高，分别为0.80和0.83，说明它们的遗传相对稳定。葡萄糖和果糖表现出相似的遗传模式。负平均RHm值和较高的LL值（葡萄糖为63.5%，果糖为39.8%）表明这些性状呈下降趋势。此外，当使用高糖或高果糖品种作为母本时，后代的平均葡萄糖或果糖含量高于正交，表明育种过程中母本的选择对这些性状有重要影响。奎宁酸也表现出母系遗传，而柠檬酸和苹果酸没有表现出这种遗传模式。在所有组合中，Ta值均大于1，HM %在57% ~ 81%之间，表明柠檬酸具有海侵遗传。进行了主基因和多基因混合遗传模型分析。结果发现，葡萄糖、果糖和柠檬酸的组合遗传模式多数为2MG-AD，由两对加性基因和显性基因控制。可加性效应比显性效应更显著，主基因的遗传力在不同亲本组合中表现出较大差异。本研究将为蓝莓杂交亲本选择奠定基础，加快蓝莓育种进程。

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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.