Variation in Pathogenicity of Seventeen Isolates of Meloidogyne incognita
Southards, C.J.; Priest, M.F.
Journal of Nematology 5(1): 63-67
1973
ISSN/ISBN: 0022-300X PMID: 19319300 Document Number: 62082
Meloidogyne incognita was collected from 17 localities in Tennessee, USA, and tested on 6 host plants. All 17 isolates infested Rutgers tomato and none infested tobacco var. N.C. 95. From the root-knot indices on cotton (Gossypium hirsutum var. McNair 1032), cowpea (Vigna sinensis, line M57-13N), watermelon (Citrullus vulgaris var. Dixie Queen) and pepper (Capsicum frutescens var. California Wonder) it is deduced that 6 physiological races of the nematode were present. The implications for breeding crops resistant to M. incognita are discussed.