摘要：

为探究不同浓度乙烯利对色素辣椒果实成熟生理变化的影响,以色素辣椒品种晋椒801为试材,于2024-2025年分别在采收前喷施0(CK),200(T200),400(T400),600(T600),800(T800),1 000 mg/L(T1000)6种不同浓度的乙烯利,在喷施后5个采样时间点,测定色素辣椒果实中干物质量、硬度、含水率、可溶性糖含量、可溶性蛋白含量、维生素C含量和果实色泽等指标。结果表明,喷施乙烯利可降低色素辣椒果实的含水率和硬度,增加维生素C含量、可溶性糖含量和可溶性蛋白含量的积累,影响辣椒果实色泽变化,促进果实快速转色。2024-2025年喷施600 mg/L乙烯利处理色素辣椒果实维生素C含量、可溶性糖含量和可溶性蛋白含量在5个采样时间点均显著高于CK,且均达同期峰值。在处理15 d时,T600处理可显著促进色素辣椒果实成熟,降低含水率和硬度,2 a平均较CK分别降低4.88百分点,32.11%;增加维生素C、可溶性糖、可溶性蛋白含量,2 a平均较CK分别增加28.27%,31.74%,72.64%。综上,色素辣椒植株喷施600 mg/L乙烯利为最佳浓度,可显著影响色素辣椒果实成熟及转色,进而提高色素辣椒果实品质。

关键词: 色素辣椒, 乙烯利, 维生素C含量, 可溶性糖含量, 可溶性蛋白含量, 硬度, 含水率

Abstract:

To investigate the effects of ethephon at different concentrations on physiological changes during fruit ripening of pigment pepper,the pigment pepper cultivar Jinjiao 801 was used as the test material.During 2024-2025,six concentrations of ethephon,namely 0(CK),200(T200),400(T400),600(T600),800(T800)and 1 000 mg/L(T1000),were sprayed on fruits before harvest.Seven indicators including dry matter weight,firmness,water content,soluble sugar content,soluble protein content,vitamin C content and fruit color parameters of pigment pepper fruits were measured at five sampling time points after spraying.The results showed that ethephon spraying reduced water content and fruit firmness of pigment pepper fruits,promoted the accumulation of vitamin C,soluble sugar and soluble protein,altered fruit coloration,and accelerated fruit color turning.Across the five sampling time points in 2024-2025,the fruits treated with 600 mg/L ethephon exhibited significantly higher vitamin C,soluble sugar and soluble protein contents than those of the CK,with all three indicators reaching the maximum values at each corresponding sampling time.At 15 days after treatment,the T600 treatment significantly accelerated fruit ripening of pigment pepper,and decreased fruit water content and firmness.Compared with CK,the two-year average reduction rates were 4.88 percentage points and 32.11%,respectively.Meanwhile,T600 treatment increased the contents of vitamin C,soluble sugar and soluble protein,with two-year average increments of 28.27%,31.74% and 72.64% relative to CK.In conclusion,600 mg/L ethephon is the optimal concentration for spraying on pigmented pepper plants.This treatment can significantly regulate fruit ripening and color change,and further improve the fruit quality of pigment pepper.

Key words: Pigmented pepper, Ethephon, Vitamin C content, Soluble sugar content, Soluble protein content, Firmness, Moisture content

中图分类号: 

• S641.3