| 曾雪玲,章世奎,徐敏,帕提曼·肉孜,花卉,阿丽菲娅·阿尤甫,周伟权,耿文娟.外源茉莉酸甲酯对‘轮台白杏’果实品质和挥发性代谢物的影响[J].干旱地区农业研究,2026,(3):149~161 |
| 外源茉莉酸甲酯对‘轮台白杏’果实品质和挥发性代谢物的影响 |
| Effects of exogenous methyl jasmonate on fruit quality and volatile metabolites of ‘Luntai White Apricot’ |
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| DOI：10.7606/j.issn.1000-7601.2026.03.14 |
| 中文关键词: 轮台白杏 茉莉酸甲酯 果实品质 香气 挥发性代谢物 |
| 英文关键词:Luntai White Apricot methyl jasmonate fruit quality aroma volatile metabolites |
| 基金项目:杏（新梅、杏李）产业技术体系项目（XJLGCYJSTX03-2026）；新疆维吾尔自治区重点研发专项（2024B02019-2）；国家园艺种质新疆名特果树及砧木分库运行服务（NHGRC2024-NH13） |
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| 中文摘要: |
| 以‘轮台白杏’果实为试验材料，在果实膨大期分别喷施1、3、5、7 mmol·L-1茉莉酸甲酯（MeJA）溶液并以喷施清水作为对照（CK）。待果实成熟后，分析不同浓度MeJA对果实基本理化指标、质地特性及挥发性代谢物含量的影响。结果表明：5 mmol·L-1MeJA处理对‘轮台白杏’果实品质的提升效果最明显；相较于CK处理，该处理下果实的可溶性固形物含量显著提高19.48%，维生素C含量提升31.05%，可溶性糖含量提升54.14%；与此同时，果实硬度、咀嚼性和胶着性显著增加，分别提高42.91%、37.70%和44.24%，能够有效维持果实原有的质地特性。在挥发性代谢物分析方面，5个处理组共鉴定出967种挥发性代谢物。与CK处理相比，外源喷施MeJA可显著影响‘轮台白杏’果实中挥发性代谢物的组成和相对含量。当MeJA浓度为5 mmol·L-1时，挥发性代谢物总含量较CK处理增加33.50%。通过气味活度值分析发现，萜类贡献最大的是4-(2,6,6-三甲基环己烯基)-3-丁烯-2-酮，酯类贡献最大的是3-甲基丁酸-2-苯乙酯，杂环化合物贡献最大的为2-甲氧基-3,5-二甲基吡嗪。综上，5 mmol·L-1的MeJA处理在促进‘轮台白杏’果实品质和香气特征提升方面的效果最为突出。 |
| 英文摘要: |
| The experiment utilized the fruits of ‘Luntai White Apricot’ as the experimental material and sprayed methyl jasmonate(MeJA) solutions at concentrations of 1, 3, 5 mmol·L-1 and 7 mmol·L-1 during the fruit expansion period, and water was sprayed as the control (CK). After the fruits matured, the effects of different concentrations of MeJA on the basic physicochemical indicators, texture properties, and volatile metabolite content of the fruits were analyzed. The results showed that among all the treatment groups, the 5 mmol·L-1 MeJA treatment had the most remarkable effect on enhancing the quality of ‘Luntaif White Apricot’. Compared with CK, the soluble solid content of the fruits under this treatment significantly increased by 19.48%, the vitamin C content rose by 31.05%, and the soluble sugar content increased by 54.14%. Concurrently, the fruit firmness, chewiness, and adhesiveness also significantly rose by 42.91%, 37.70%, and 44.24%, respectively, effectively maintaining the original texture characteristics of the fruits. In terms of volatile metabolite analysis, a total of 967 volatile metabolites were identified in the five treatment groups. Compared with CK, exogenous spraying of MeJA significantly affected the composition and relative content of volatile metabolites in ‘Luntai White Apricot’. When the MeJA concentration was 5 mmol·L-1, the total content of volatile metabolites increased by 33.50% compared with CK. Through the analysis of the relative odor activity value, it was found that the terpenoid with the greatest contribution was 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one, the ester with the greatest contribution was butanoic acid, 3-methyl-2-phenylethyl ester, and the heterocyclic compound with the greatest contribution was 2-methoxy-3,5-dimethylpyrazine. In summary, the 5 mmol·L-1 MeJA treatment was the most prominent in promoting the improvement of the fruit quality and aroma characteristics of ‘Luntai White Apricot’. |
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