• Abdourahamane ALOU HIMADOU
• Hassoumi DJIBO

Abstract: This research was undertaken to investigate cotton (Gossypium hirsutum L.) metabolic activities and lint production following imposed water stress. Water stress was applied using empirically derived stress indices as developed by Idso and colleagues for Crop Water Stress Index (CWSI). We used Five (5) levels of stress as treatments to assess cotton physiological response to water deficiency. Indices used were .16, .35, .36, .40, and .62. Metabolic parameters measured were diffusive resistance, transpiration and apparent photosynthesis. Boll and lint production were also subsequently measured. With regards to metabolic activities, negative relationships were observed between apparent photosynthesis, transpiration, leaf area and CWSI. Boll abscission and retention were also negatively correlated to CWSI. As for lint production, there was no significant difference between treatments at stress level used. Plants irrigated at stress level either below .30 or above .40, tended to produce relatively lower lint comparatively to plants upheld between .30 and .40. Plant height, positively correlates with amount of water applied. KEYWORDS: Cotton; diffusive resistance; apparent photosynthesis; lint; Water stress index.

"Metabolic activities and lint production of water stressed cotton ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 12, page no.a305-a337, December-2022, Available :http://www.jetir.org/papers/JETIR2212039.pdf

"Metabolic activities and lint production of water stressed cotton ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 12, page no. ppa305-a337, December-2022, Available at : http://www.jetir.org/papers/JETIR2212039.pdf