Effect of Reproductive Stage-Waterlogging on the Growth and Yield of Upland Cotton (Gossypium hirsutum)

Abstract

The reproductive stage of cotton (Gossypium sp.) is highly sensitive to waterlogging. The identification of potential elite upland cotton (Gossypium hirsutum) cultivar(s) having higher waterlogging tolerance is crucial to expanding cotton cultivation in the low-lying areas. The present study was designed to investigate the effect of waterlogging on the reproductive development of four elite upland cotton cultivars, namely, Rupali-1, CB-12, CB-13, and DM-3, against four waterlogging durations (e.g., 0, 3, 6, and 9-day). Waterlogging stress significantly impacted morpho-physiological, biochemical, and yield attributes of cotton. Two cotton cultivars, e.g., CB-12 and Rupali-1, showed the lowest reduction in plant height (6 and 9%, respectively) and boll weight (8 and 5%, respectively) at the highest waterlogging duration of 9 days. Physiological and biochemical data revealed that higher leaf chlorophyll, proline, and relative water contents, and lower malondialdehyde contents, particularly in CB-12 and Rupali-1, were positively correlated with yield. Notably, CB-12 and Rupali-1 had higher seed cotton weight (90.34 and 83.10 g, respectively), lint weight (40.12 and 39.32 g, respectively), and seed weight (49.47 and 43.78 g, respectively) per plant than CB-13 and DM-3 in response to the highest duration of waterlogging of 9 days. Moreover, extensive multivariate analyses like Spearman correlation and the principle component analysis revealed that CB-12 and Rupali-1 had greater coefficients in yield and physiological attributes at 9-day waterlogging, whereas CB-13 and DM-3 were sensitive cultivars in response to the same levels of waterlogging. Thus, CB-12 and Rupali-1 might be well adapted to the low-lying waterlogging-prone areas for high and sustained yield.

Deciphering Physio-Biochemical Basis of Tolerance Mechanism for Sesame (Sesamum indicum L.) Genotypes under Waterlogging Stress at Early Vegetative Stage

“…In the context of stress response, proline serves a protective role by directly neutralizing ROS, stabilizing proteins and antioxidant enzymes, maintaining the balance of intra-cellular redox homeostasis (specifically the ratio of NADP + /NADPH and GSH/GSSG), and enhancing cell signaling while safeguarding photosynthetic pigments [ 74 , 75 ]. Several researchers have reported that the increased accumulation of proline in response to waterlogging stress is regarded as a significant biochemical adaptation that serves to mitigate the deleterious consequences of waterlogging, ultimately leading to enhanced plant performance [ 9 , 12 , 37 , 50 , 76 , 77 ].…”

Recursos fitogenéticos nativos de la región de La Mojana: una poderosa estrategia de resiliencia de los pequeños productores para mejorar la productividad ante los efectos de la variabilidad climática

“…Estudios similares al presente, pero en otras especies, han demostrado que el aumento en la duración de la inundación y la sequía afecta negativamente la conductancia estomática y la tasa fotosintética en la soya (Adegoye et al, 2023), el algodón (Huang et al, 2023;Somaddar et al, 2023), kiwi (Wurms et al, 2023), el maíz (Ru et al, 2023), el fríjol caupí (Pompelli et al, 2022) y el arroz (López-Hernández et al, 2018), entre otros. Los trabajos coinciden en que las plantas son vulnerables a la sequía e inundación, porque reducen considerablemente las tasas de difusión de O 2 y CO 2 en las raíces y tallos, e inhiben significativamente tanto la fotosíntesis como la respiración (Kim et al, 2015).…”