The effect of different shading net on the Quantum Efficiency of PS II in chilli pepper cultivar ‘Star Flame’

Duah, Stella Agyemang; Nagy, Z.; Helyes, Lájos

doi:10.34101/actaagrar/2/3673

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It confirms previous work on the ideal photochemical quantum efficiency of PS II when plants are not under any kind of stress [35]. Previous studies on 'Star flame' chili peppers are in agreement with this assertion [36]. A lower Fv/Fm values in HAB might be due to their inability to withstand the open field environment.…”

Section: Discussionsupporting

confidence: 90%

Effect of Water Supply on Physiological Response and Phytonutrient Composition of Chili Peppers

Duah

Souza

Nagy

et al. 2021

Water

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 90%