Author(s)

Nadir Ali^1*, Mukhtar Ahmad^1*, Mansoor Ali², Muhammad Abdullah Khan³, Saif Ullah¹, Muhammad Asim¹, Usama Ashiq¹, Salman Ahmad¹

Affiliation(s)

¹Department of Agronomy, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46300, Pakistan.

²Department of Food Science &Technology, University of Haripur, Khyber Pakhtunkhwa 22620, Pakistan.

³Department of Horticulture, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46300, Pakistan.

Corresponding Author

Nadir Ali, Mukhtar Ahmad

ABSTRACT

Yield and quality of rapeseed (Brassica napus L.) are declining due to climate change and water stress which are major factors affecting the sustainability of agriculture across the world. These abiotic stresses severely affect yield and quality of the crop and thus call for the search for genotypes capable of performing well under different environmental conditions. Ways in which water stress and climate variability influenced general yield and quality of rapeseed genotypes, grown at several places, forming the basis of this research to establish genotypes that could help form the foundation of sustainable agriculture. To compare the genetic variability of the 10 rapeseed genotypes, a multi-location field trial with water at optimal irrigation and water stress levels was used. In the present study, RCBD with three replications was being used. Information on yield components, oil content, and on quality traits were recorded, and then analyzed statistically using analysis of variance (ANOVA) and and genotype by environment interaction (GEI). Multi-environment analysis showed that genotypes performed differently (p<0.05) for yield and quality components. Genotype G3 had the highest seed yield (2.8 t/ha) under normal irrigation and G7 retained the higher yield (2.2 t/ha) under water stress. Protein content ranged between 0.11 and 0.22 while the oil content was between 40.1 and 45.8 with G4 having stable level in both environments. Results from stress-DEA showed that, under stress, G7 and G4 were stable genotypes with broad adaptability. Consequently, the study raises a concern on the unpredicted genotypic reaction to water stress while urging the need for adaptation to climate dynamics in rapeseed production. The study offers useful information for breeders interested in developing planting materials that are resistant to climate change. The message underpinning it focuses on the promised further possibilities of genotype G7 as a perspective variety to cultivate in regions where water is a significant concern, as well as on keeping yields stable while maintaining quality at reasonable levels.

KEYWORDS

Adaptability; Climate change; Genotype by Environment Interaction (GEI); Rapeseed; Water stress

CITE THIS PAPER

Nadir Ali, Mukhtar Ahmad, Mansoor Ali, Muhammad Abdullah Khan, Saif Ullah, Muhammad Asim, Usama Ashiq, Salman Ahmad. Impact of water stress, climate change, and adaptability trials on yield and quality of rapeseed genotypes across diverse locations. World Journal of Agriculture and Forestry Sciences. 2025, 3(1): 1-13. DOI: https://doi.org/10.61784/wjafs3016.

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