IDENTIFICATION OF SOURCES OF RESISTANCE AGAINST CHARCOAL ROT IN COWPEA

ABSTRACT Cowpea [Vigna unguiculata (L.) Walp.] is an important socioeconomic crop in Brazil, mainly the Northeast and more recently Midwest of Brazil. Charcoal rot caused by Macrophomina phaseolina (Tassi) Goid, disease semiarid regions, where edaphoclimatic conditions are favorable to development disease. The aim this study was evaluate response 100 cowpea lines two isolates M. phaseolina. experiments were conducted a completely randomized design, with five replications (two plants per pot). main variables evaluated lesion length relative growth compared control (RGCC). Among accessions, 15% resistant isolate 59 11% CMM 2106 Therefore, these accessions can be used as source resistance farmers directly new cultivars or future hybridizations genetic breeding programs.