Cowpea genetic resources and its utilization: Indian perspective – A review

Abstract

Cowpea is a multipurpose food legume of the tropics and is a crucial source of nutrition for rural and tribal communities in Africa and Asia. High protein content, nitrogen-fixing ability, drought tolerance and adaptability to challenging environment make cowpea, a promising climate resilient food legume of 21st century. This crop is grown as sole or mix-crop and in agro-forestry combinations for diverse uses as pulse, vegetable and fodder. Although cowpea has been used by indigenous people for centuries, its full potential has never been realized. Its production did not increase over the years due to narrow genetic base, biotic and abiotic stresses and non-adaptation to changing climate. Ultimate solution lies in its genetic resource which are the reservoir of useful genes. Lack of information on germplasm characterization and evaluation restricts the effective use of germplasm stored in the genebanks. Introgression of genes from closely related Vigna species and application of modern molecular tools may facilitate broadening the genetic base of cowpea.