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Effect of Water Supply on Physiological Response and Phytonutrient Composition of Chili Peppers
Water ( IF 3.0 ) Pub Date : 2021-05-01 , DOI: 10.3390/w13091284
Stella Agyemang Duah , Clarice Silva e Souza , Zsuzsa Nagy , Zoltán Pék , András Neményi , Hussein G. Daood , Szergej Vinogradov , Lajos Helyes

Water supply is a primary contributor to the growth and phytonutrient composition in chili peppers. Several physiological stress factors can influence phytonutrients in chili peppers, resulting in their differential synthesis. Maintaining the right and exact amount of water through a drip system can promote an effective fruit set and crop quality. Four pepper cultivars (‘Hetényi Parázs’; HET, ‘Unikal’; UNIK, ‘Unijol’; UNIJ and ‘Habanero’; HAB) were investigated under different water supply treatments: RF or rain-fed, DI or deficit irrigation, and OWS or optimum water supply. The two-year experiment was carried out in May 2018 and 2019 under open field conditions. Physiological parameters (relative chlorophyll content, chlorophyll fluorescence, and canopy temperature) were measured during the growth stage and phytonutrients (vitamin C, capsaicinoids and carotenoids) analyzed using high-performance liquid chromatography (HPLC) at harvest in September. The study revealed that, due to higher precipitation and rainfall interruption, increased water supply affected physiological response and phytonutrients in the cultivars. HAB under OWS had a lower response during the growth period when compared to HET, UNIK, and UNIJ. As water supply increased, measured individual carotenoid concentration increased in some cultivars. On the other hand, as water supply decreased, vitamin C and capsaicinoids concentration increased. Even though cultivars responded to the water supply treatments differently, HET exhibited a more uniform and stable composition in all treatments.

中文翻译:

供水对辣椒生理响应和植物营养成分的影响

供水是辣椒生长和植物营养成分的主要来源。几种生理压力因素可以影响辣椒中的植物营养素,导致它们的差异化合成。通过滴灌系统保持正确和适量的水可以促进有效的坐果和农作物的品质。在不同的供水方式下研究了四个辣椒品种(“HetényiParázs”,“ HET”,“ Unikal”,UNIK,“ Unijol”,UNIJ和“ Habanero”,HAB):RF或雨水灌溉,DI或亏水灌溉以及OWS或最佳供水。这项为期两年的实验于2018年5月和2019年在露天条件下进行。在生长阶段测量生理参数(相对叶绿素含量,叶绿素荧光和冠层温度)和植物营养素(维生素C,9月收获时使用高效液相色谱(HPLC)分析了辣椒素和类胡萝卜素)。该研究表明,由于降水增加和降雨中断,供水增加影响了品种的生理反应和植物营养素。与HET,UNIK和UNIJ相比,OWS下的HAB在生长期内的响应较低。随着供水量的增加,某些品种中测得的单个类胡萝卜素浓度也随之增加。另一方面,随着供水量的减少,维生素C和辣椒素的浓度也会增加。即使品种对供水处理的反应有所不同,但HET在所有处理中均表现出更均匀和稳定的组成。该研究表明,由于降水增加和降雨中断,供水增加影响了品种的生理反应和植物营养素。与HET,UNIK和UNIJ相比,OWS下的HAB在生长期内的响应较低。随着供水量的增加,某些品种中测得的单个类胡萝卜素浓度也随之增加。另一方面,随着供水量的减少,维生素C和辣椒素的浓度也会增加。即使品种对供水处理的反应有所不同,但HET在所有处理中均表现出更均匀和稳定的组成。该研究表明,由于降水增加和降雨中断,供水增加影响了品种的生理反应和植物营养素。与HET,UNIK和UNIJ相比,OWS下的HAB在生长期内的响应较低。随着供水量的增加,某些品种中测得的单个类胡萝卜素浓度也随之增加。另一方面,随着供水量的减少,维生素C和辣椒素的浓度也会增加。即使品种对供水处理的反应有所不同,但HET在所有处理中均表现出更均匀和稳定的组成。和UNIJ。随着供水量的增加,某些品种中测得的单个类胡萝卜素浓度也随之增加。另一方面,随着供水量的减少,维生素C和辣椒素的浓度也会增加。即使品种对供水处理的反应有所不同,但HET在所有处理中均表现出更均匀和稳定的组成。和UNIJ。随着供水量的增加,某些品种中测得的单个类胡萝卜素浓度也随之增加。另一方面,随着供水量的减少,维生素C和辣椒素的浓度也会增加。即使品种对供水处理的反应有所不同,但HET在所有处理中均表现出更均匀和稳定的组成。
更新日期:2021-05-02
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