Open AccessEffect of cowpea aphid-borne mosaic virus on penetration and reproduction of meloidogyne incognita in cowpea
Author(s) -
O. K. Adekunle,
T.E. Owa
Publication year - 2008
Publication title -
journal of agricultural sciences
Language(s) - English
Resource type - Journals
eISSN - 2406-0968
pISSN - 1450-8109
DOI - 10.2298/jas0803193a
Subject(s) - meloidogyne incognita , biology , nematode , terra incognita , cultivar , inoculation , agronomy , aphid , population , root knot nematode , cucumber mosaic virus , horticulture , virus , plant virus , virology , ecology , demography , sociology
greenhouse studies were conducted to investigate the effects of cowpea aphid-borne mosaic virus on penetration and reproduction of Meloidogyne incognita in cowpea and the influence of these pathogens on the yield of cowpea. The interaction of both pathogens resulted in higher population density of the nematode at harvest and correspondingly reduced grain yield in comparison to inoculation of either pathogen alone or un-inoculated control. An almost equal number of nematode juveniles penetrated roots of seedlings of nematode - susceptible Ife Brown and TVU 2657 and nematode - resistant IT81D - 975 cultivars of cowpea, but the nematode did not develop beyond second stage juvenile in the resistant cultivar. Concomitant inoculation of the nematode and the virus resulted in a shortened life cycle of the nematode in comparison to nematode alone inoculation. Interaction of both the nematode and the virus had a limited effect on the nematode resistant cultivar of cowpea