01350naa a2200277 a 450000100080000000500110000800800410001910000190006024501000007926000090017952006170018865000200080565000140082565000260083965000150086565000170088065000090089765000220090665300100092865300110093865300130094970000170096270000200097970000190099977300540101810564821999-11-24       1995    bl ---       0--  u    #d1 aROBERTS, P. A.  aInteractions of virulent Meloidogyne incognita and fusarium wilt on resistant cowpea genotypes.  c1995  aTwo isolates of Meloidogyne incognita from separate field sites in central California were virulent to five cowpea genotypes carrying resistance gene Rk and three other isolates were Rk avirulent in findings based on egg production in greenhouse experiments. Egg production and root galling at the two field site with virulent populations and at ont field site with an avirulent population confirmed the greenhouse results. The effects of nematodes on wilt disease caused by Fusarium oxysporum f. sp. tracheiphilum and on cowpea yield were examined over 3 years at the two sites infested with virulent nematodes.  asoil fumigation  aGenótipo  aMeloidogyne Incognita  aNematóide  aResistência  aSolo  aVigna Unguiculata  aCaupi  aCowpea  aNematode1 aFRATE, C. A.1 aMATTHEWS, W. C.1 aOSTERLI, P. P.  tPhytopathologygv. 85, n. 10, p. 1288-1295, 1995.