Evaluation of agro-morphological Traits to identify tolerant genotypes in Cowpea (Vigna unguiculata L.)

Document Type : Research Paper

Authors

Department of Agronomy and Plant Breeding, Faculty of Agriculture, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.

Abstract

Cowpea is a multiple-purpose drought-tolerant leguminous pulse crop grown in several dry tropical areas. However, detailed genetic information is lacking in many Asian countries, limiting the success of breeding programs. In this research, in order to evaluate the drought tolerance of 30 cowpea genotypes, an experiment was conducted in the form of a completely randomized block design with three replications in two conditions without stress (60 ml evaporation from the evaporation pan) and drought stress (120 ml ‌ liter of evaporation from the evaporation pan) was done in field conditions. The genotypes were significantly different from each other in terms of agro-morphological traits. The cluster analysis grouped the genotypes into four clusters. In general, based on bi-plot analysis, cluster analysis and correlation, genotypes 4, 6, 14, 28 and 29 in normal conditions and in drought stress conditions genotypes 5, 6, 14, 28 and 29 have the highest yield. They had the seed. Due to the fact that genotypes 28, 29 and 14 have a lower yield under drought stress than normal, they were identified as tolerant genotypes, which had higher yields than the control cultivars. Which might represent promising cowpea genetic resources for improved drought tolerance breeding.

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Iranian Journal of Field Crop Science
Volume 55, Issue 4
December 2024
Pages 77-93

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History

  • Receive Date: 12 March 2024
  • Revise Date: 11 June 2024
  • Accept Date: 16 June 2024
  • Publish Date: 21 December 2024

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