Insights into the responses of Akabare chili landraces to drought, heat, and their combined stress during pre-flowering and fruiting stages

Drought, heat, and their combined stress have increasingly become common phenomena in horticulture, significantly reducing chili production worldwide. The current study aimed to phenotype Akabare chili landraces (Capsicum spp.) in climate chambers subjected to drought and heat treatments during thei...

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Bibliographic Details
Published in:Heliyon 2024-08, Vol.10 (16), p.e36239, Article e36239
Main Authors: Poudyal, Damodar, Krishna Joshi, Bal, Chandra Dahal, Kishor
Format: Article
Language:English
Subjects:
Agronomic trait
biomass production
Capsicum
Carbon gain
chlorophyll
Chlorophyll fluorescence
climate
cooling
drought
fruits
heat
heat stress
horticulture
landraces
Leaf cooling
leaves
phenotype
Photosynthesis
photosystem II
stomatal conductance
stress tolerance
water stress
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Summary:Drought, heat, and their combined stress have increasingly become common phenomena in horticulture, significantly reducing chili production worldwide. The current study aimed to phenotype Akabare chili landraces (Capsicum spp.) in climate chambers subjected to drought and heat treatments during their early generative stage, focusing on PSII efficacy (Fv/Fm), net photosynthetic rate (PN), stomatal conductance (gs), leaf cooling, and biomass production. Six landraces were examined under heat and control conditions at 40/32 °C for 4 days and at 30/22 °C under drought and control conditions followed by a 5-day recovery under control conditions (30/22 °C, irrigated). Two landraces with higher (>0.77) and two with lower (
ISSN:2405-8440
2405-8440
DOI:10.1016/j.heliyon.2024.e36239