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Mona S Alwahaibi منى بنت سليمان الوهيبي

Professor

Faculty member

Sciences
Building 5 Third Floor Office 299

8058452
malwhibi@ksu.edu.sa
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publication
Journal Article
2023
Published in:

Impact of heat stress on agro-morphological, physio-chemical and fiber related paramters in upland cotton (Gossypium hirsutum L.) genotypes

The unpredictably changing climatic conditions, especially high temperatures, are putting a continuous

threat to sustainable cotton production. The current study was designed to investigate the impact of heat

stress on several morpho-physiological, biochemical, and fibre quality-related traits. The results revealed

the presence of significant variations in agro-morphological, physio-chemical and staple length-related

parameters for upland cotton genotypes and stress treatments. Further analysis of pooled data unveiled

that heat stress had a detrimental impact on all studied plant traits. Severe reduction in plant height,

nodes per plant, sympodial branches per plant, number of bolls per plant, ginning out-turn, and staple

length were recorded under heat stress. A significant reduction in net photosynthetic rate (Pn) up to

28.6 % was observed in cotton genotype BH-200 (24.7 to 19.2 lmole m2 s1). The accumulation of

hydrogen peroxide (H2O2) was increased from 7.1 % in BH-306 to 28.7 % in BH-200 under heat stress

due to the incidence of oxidative stress. A substantial increase in the accumulation of antioxidants i.e.,

catalase (65 %–74 %), peroxidase (54 %–169 %), and superoxide dismutase (52 %–98 %) was seen under

high-temperature stress conditions. The correlation coefficient analysis unveiled a significantly positive

correlation of seed cotton yield with nodes per plant (r = 0.432*), net photosynthetic rate (r = 0.829**),

peroxidase (r = 0.974**), and superoxide dismutase (r = 0.868**), under heat stress conditions. However,

a negative but statistically significant correlation of seed cotton yield with ginning out turn (r = 0.46

6*), staple length (r = 0.898**), hydrogen peroxide (r = 0.955**) and catalase (r = 0.904**) was also

observed. The overall results unveiled that cotton genotype BH-232 has a comparatively higher heat tolerance

than other contesting genotypes while BH-306 showed the highest susceptibility to heat stress.

Hence, BH-232 could be recommended after its approval for general cultivation in heat-prone areas of

Pakistan.

Publisher Name
Journal of King Saud University – Science
Publishing City
SAUDI ARABIA
more of publication
publications
Impact of Melatonin Application on Wheat Agronomic Traits Under Abiotic Stress: A Meta‐Analysis

This meta-analysis assesses the effects of melatonin (Mel) on various wheat agronomic traits, revealing significant heterogeneity and potential publication bias.

2025
Published in:
Wiley‑Blackwell Publishing Ltd (UK-based company)
publications
Exploring the micromorphological diversity of palynomorphic flora from lesser Himalaya biodiversity hotspot

Palynology, a prominent field in plant systematics and biodiversity studies, plays a vital role in

identifying and determining the plant species present in a specific region. The current…

by Kainat KANWAL, Muhammad ZAFAR, Mona S. ALWAHIBI
2025
Published in:
AcademicPres, in collaboration with the University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca and other Romanian academic institutions.
publications
Impact of heat stress on agro-morphological, physio-chemical and fiber related paramters in upland cotton (Gossypium hirsutum L.) genotypes

The unpredictably changing climatic conditions, especially high temperatures, are putting a continuous

threat to sustainable cotton production. The current study was designed to…

by Mona S.Alwhibi, Muhammad Irfan Yousaf
2023
Published in:
Journal of King Saud University – Science