Show simple item record

dc.contributor.authorOkechukwu, R.U.
dc.contributor.authorEkpo, E.J.
dc.date.accessioned2019-12-04T11:36:36Z
dc.date.available2019-12-04T11:36:36Z
dc.date.issued2004
dc.identifier.citationOkechukwu, R.U. & Ekpo, E.J. (2004). Sources of resistance to cowpea bacterial blight disease in Nigeria. Journal of Phytopathology, 152(6), 345-351.
dc.identifier.issn0931-1785
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6299
dc.description.abstractThe development of resistant crop varieties depends on the reliability of the method of screening for resistance. One of the techniques widely used in evaluating field resistance is the field screening method. However, most cowpea varieties regarded as having field resistance are often found to be susceptible in farmers’ fields, where the inoculum density can be higher. This study rescreened 96 cowpea varieties, evaluated earlier in breeders’ fields as resistant to Xanthomonas campestris pv. vignicola, in field and greenhouse under high inoculum pressure. There were significant differences (P ≤ 0.05) in the reactions of cowpea varieties to bacterial blight in terms of disease incidence and severity. Results from the field screening showed that there were 69 susceptible, 25 moderately susceptible, and 2 resistant varieties. In artificial inoculation in the greenhouse IT81D‐1228‐14, IT82E‐16, IT93K‐2271‐2‐2, TVu 1235, and TVu 4630, which were moderately susceptible in the field showed a susceptible reaction. Tvu 12349 and Tvu 15549 gave consistent reactions in the field and in the greenhouse and are therefore good sources of stable resistance to bacterial blight pathogen. Stem canker incidence also varied significantly (P ≤ 0.05) among the cowpea varieties. Seventeen varieties did not manifest canker symptoms.
dc.language.isoen
dc.subjectBacterial Leaf Blight
dc.subjectVigna Unguiculata
dc.subjectCowpeas
dc.subjectCankers
dc.subjectScreening
dc.subjectResistance Mechanisms
dc.titleSources of resistance to cowpea bacterial blight disease in Nigeria
dc.typeJournal Article
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCowpea
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Health
cg.iitasubjectDisease Control
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
local.dspaceid107581
cg.identifier.doihttps://doi.org/10.1111/j.1439-0434.2004.00852.x


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record