Journal
JOURNAL OF PLANT NUTRITION
Volume 41, Issue 13, Pages 1711-1723Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01904167.2018.1459694
Keywords
cotton; lipid peroxidation; phenology; secondary metabolites; terminal heat; yield components
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Heat stress at reproductive stages of cotton is a leading encumbrance to accomplish yield potential. An experiment was conducted to alleviate adversities of terminal heat stress on cotton. Experiment was conducted at University of Agriculture Faisalabad, Pakistan during 2013 and repeated in 2014 using Randomized Complete Block Design (RCBD) with split arrangement. Treatments were comprised of heat stress in main plots, viz., H-0 = no heat imposition, H-1 = heat imposition at squaring, and H-2 = heat imposition at flowering. Selenium was foliar applied in split plot, viz., Se-0 = 0, Se-50 = 50, Se-100 = 100, and Se-150 = 150mg L-1. Cell membrane thermostability, soluble proteins, and total phenolics were reduced significantly under heat stress leading to reduced cotton yield and related components. Maximum membrane thermostability, total phenolics, soluble proteins, opened bolls, boll weight, sympodial branches, and seed cotton yield were recorded with the application 150mg Se L-1.
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