A study was conducted in the glasshouse and under laboratory conditions to verify
diversity in Fusarium udum of pigeonpea in Kenya using several isolates of the fungus
collected from both traditional pigeonpea growing areas and new ones. Glasshouse tests
using twelve pigeonpea lines gave consistent differences in virulence in these isolates.
There were also strong differences in growth traits, such as growth rate (aggressiveness),
growth habit and morphology, in these isolates in laboratory tests. Therefore, these isolates
are true variants of this pathogen. There are as yet no pigeonpea differentials for Fusarium
and so it could not be confirmed whether the isolates are races of F. udum in Kenya or not.
Its implication in framing a breeding strategy has been discussed.
Keywords: Pathogenic variation, Fusarium udum, cultural traits, virulence, races.
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
M. A. OKIROR AND P. M. KIMANI info_circle