Effect of presoaking various growth regulators on the yield and biochemical characteristics of cowpea plants (Vigna sinensis L.)

Objectives: Cowpea (Vigna sinensis L.) is one of the world's most popular and widely consumed vegetable crops, and its economic success in Saudi Arabia is dependent on high-quality yield. Cowpea is the most important indigenous legume crop in terms of economic value. Cowpea seed has been employed as both a nutritious cow feed and a human nutritional component. Cowpea seed has more amino acids, tryptophan, and lysine than other cereal grains, but fewer methionine and cystine than animal proteins. The purpose of this study was to look at the role of growth bioregulators in cowpea plant yield and yield characteris-tics, as well as complete protein and soluble sugar levels in seed production.Methods: This study used plant and growth condition analysis, yield and yield component analysis, total soluble sugars and proteins in yielding seeds computation, and endogenous hormone determination.Results: In this work, three growth regulators were utilized to increase the physiological activity and pro-duction of cowpea plants. When compared to untreated control plants, seed presoaking in various con-centrations of IAA, GA3, and kinetin appeared to improve various yield parameters such as 100-seed weight and relative growth yield, pod weight, pod length number, and total amount of seeds/pots of cow -pea plants.Conclusion: This study concludes that IAA, GA3, and kinetin appeared to improve different yield param-eters in cowpea plants.& COPY; 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).