Drought and heat stress on cotton genotypes suggested agro-physiological and biochemical features for climate resilience.
abiotic stress
climate change
drought stress
heat stress
physiology
Journal
Frontiers in plant science
ISSN: 1664-462X
Titre abrégé: Front Plant Sci
Pays: Switzerland
ID NLM: 101568200
Informations de publication
Date de publication:
2023
2023
Historique:
received:
23
07
2023
accepted:
13
09
2023
medline:
29
11
2023
pubmed:
29
11
2023
entrez:
29
11
2023
Statut:
epublish
Résumé
This study aimed to investigate the impact of individual drought, heat, and combined drought and heat stress on twelve cotton genotypes, including eight tolerant and four susceptible genotypes. A field experiment was carried out by employing a randomized complete block split-plot design, with treatments (control, drought, heat, drought + heat), and cotton genotypes assigned to the main plots and sub-plots respectively. The results showed that the combined stress had a more severe impact on the yield and fiber quality of cotton genotypes compared to individual stresses. Among the studied genotypes, FB-Shaheen, FH-207, MNH-886, and White Gold exhibited superior performance in regard to agronomic and fiber quality characters under combined stress environments. Physiological parameters, including transpiration rate, stomatal conductance, relative water contents, and photosynthetic rate, were significantly reduced under combined stress. However, specific genotypes, MNH-886, FH-207, White Gold, and FB-Shaheen, demonstrated better maintenance of these parameters, indicating their enhanced tolerance to the combined stress. Furthermore, the accumulation of reactive oxygen species was more pronounced under combined stress compared to individual stressors. Tolerant genotypes showed lower levels of H
Identifiants
pubmed: 38023925
doi: 10.3389/fpls.2023.1265700
pmc: PMC10643170
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1265700Informations de copyright
Copyright © 2023 Zafar, Chattha, Khan, Zafar, Subhan, Saleem, Ali, Ijaz, Anwar, Qiao, Shakeel, Seleiman, Wasonga, Parvaiz, Razzaq and Xuefei.
Déclaration de conflit d'intérêts
AA was employed by company FB Genetics. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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