华北农学报2023，Vol.38Issue(z1)：180-187,8.DOI:10.7668/hbnxb.20193870
UV-B辐射对不同发育时期辣椒主要果实品质的影响
Effects of UV-B Radiation on Main Fruit Quality of Capsicum annuum at Different Developmental Stages
摘要
Abstract
In order to investigate the physiological stress response mechanism of pepper fruits to UV-B radia-tion and further elaborate the mechanism of fruit quality deterioration in vegetables in high UV-B radiation areas,the young fruits,green fruits and red fruits of UV-sensitive variety Huamei 105 and UV-resistant variety Ledu long pep-per were selected as test materials.The effects of different UV-B radiation duration(dose)of 0(CK),2,4 and 6 h on fruit growth and development,prototype protection and nutrient quality related substances content were studied.The results showed that with the extension of radiation time,the single fruit weight and transverse diameter of Hua-mei 105 decreased significantly at the green and red fruit stages,which inhibited the fruit growth.The contents of protective substances Vc and total phenol in fruits of the two varieties at each growth stage increased gradually as the extension of treatment time,while the contents of soluble protein decreased gradually.The contents of Vc and total phenol significantly increased after 6 h,and the contents of soluble protein decreased the most.The contents of Vc,total phenol and soluble protein of Huamei 105 changed greater than those of Ledu long pepper.With the ex-tension of radiation time,the content of soluble sugar showed a trend of first increasing and then decreasing,while the content of cellulose showed a trend of first decreasing and then increasing.In conclusion,UV-B had little effect on the indexes in the young fruit stage of the two varieties.High-dose UV-B could significantly inhibit the growth of the UV-sensitive varieties at the green and red fruit stages,and significantly increase the contents of Vc,total phe-nol,cellulose and other substances in the two varieties,and significantly reduce the contents of soluble protein and soluble sugar.However,low dose UV-B could significantly increase the soluble sugar content,and the increase or decrease amplitude was higher in UV-sensitive varieties than in UV-resistant varieties.Therefore,lower than 1/4 le-thal dose of UV-B can promote fruit quality,and higher than 1/2 lethal dose of UV-B can make pepper fruit quality start to deteriorate.关键词
辣椒果实/UV-B辐射/不同生育期/果实品质Key words
Pepper fruit/UV-B radiation/Different growth periods/Quality of fruit分类
农业科技引用本文复制引用
陈艳,张文娟,邓昌蓉,侯全刚,刘敏,邵登魁..UV-B辐射对不同发育时期辣椒主要果实品质的影响[J].华北农学报,2023,38(z1):180-187,8.基金项目
青海省科学技术厅应用基础研究项目(2020-ZJ-766) （2020-ZJ-766）
