Resistance evaluation of five varieties of cowpea and their F1 descendants from a diallel crossing to cowpea aphid-borne mosaic virus in Burkina Faso

Abstract

Cowpea is a dual-purpose protein crop which has a high nutritional value. However, many problems such as cowpea aphid-borne mosaic virus limit its production. This study aimed at assessing the resistance of varieties of cowpea to cowpea aphid-borne mosaic virus (CABMV). Thus, a complete diallel cross between five cowpea varieties was done in a partially balanced incomplete block plan (alpha design) with three replications. The F 1 descendants obtained and their parents were evaluated using five characters. Results obtained reveal that all characters discriminate the parents and F 1 descendants. All five parents tested revealed their resistance or susceptibility status to CABMV. The F 1 descendants from the cross between local Gorom x KVx640, KVx30-309-6G x KVx396-4-5-2D, KVx61-1 x KVx640, KVx640 x local Gorom and KVx640 x KVx61-1 which have shown a low severity value and a high weight of one hundred seeds are the best. They could be used in Burkina Faso' cowpea breeding program to develop resistant varieties to cowpea aphid-borne mosaic virus.

Genetic Study of the Resistance of Twelve (12) Varieties of Vegetable Cowpea [Vigna unguiculata (L.) Walp. ] to Cowpea Aphid- Borne Mosaic Virus, Burkina FASO

“…According to , infected plants used less space and nutrients than healthy plants. The best varieties are those which showed a low severity value and a high weight of one-hundred-seeds (BARRO et al, 2018).…”