Inheritance of resistance to three endemic viral diseases of cowpea in Nigeria

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cg.authorship.typesCGIAR single centreen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.crpGrain Legumesen
cg.contributor.donorBill & Melinda Gates Foundationen
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeWest and Central African Food Systems Transformationen
cg.contributor.initiativeAccelerated Breedingen
cg.coverage.countryNigeriaen
cg.coverage.iso3166-alpha2NGen
cg.coverage.regionACPen
cg.coverage.regionWestern Africaen
cg.creator.identifierChristian Fatokun: 0000-0002-8428-7939en
cg.creator.identifierOusmane: 0000-0003-0234-4264en
cg.creator.identifierP. Lava Kumar: 0000-0003-4388-6510en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1080/15427528.2022.2090476en
cg.identifier.iitathemeBIOTECH & PLANT BREEDINGen
cg.identifier.iitathemePLANT PRODUCTION & HEALTHen
cg.isijournalISI Journalen
cg.issn1542-7528en
cg.issue2en
cg.journalJournal of Crop Improvementen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaResilient Agrifood Systemsen
cg.subject.iitaAFLATOXINen
cg.subject.iitaAGRONOMYen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT HEALTHen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.impactAreaNutrition, health and food securityen
cg.volume37en
dc.contributor.authorOgunsola, K.E.en
dc.contributor.authorFatokun, C.en
dc.contributor.authorBoukar, O.en
dc.contributor.authorKumar, P. Lavaen
dc.date.accessioned2022-07-04T11:29:21Zen
dc.date.available2022-07-04T11:29:21Zen
dc.identifier.urihttps://hdl.handle.net/10568/120008
dc.titleInheritance of resistance to three endemic viral diseases of cowpea in Nigeriaen
dcterms.abstractMosaic diseases, caused by bean common mosaic virus-blackeye cowpea mosaic strain (BCMV-BlCM), southern bean mosaic virus (SBMV), and cucumber mosaic virus (CMV), hamper the productivity of cowpea (Vigna unguiculata (L.) Walp.). Under single or mixed infections, these endemic viruses significantly reduce cowpea yield in sub-Saharan Africa. Planting resistant varieties is the most effective control method. Knowledge of the mode of inheritance of viral resistance is crucial in developing resistant varieties. Inheritance of resistance to BCMV-BlCM, SBMV, and CMV was investigated in two improved cowpea breeding lines. For BCMV-BICM, crosses were made between resistant IT97K-1042-3 (female) and susceptible IT99K-1060 (male); for SBMV, between resistant IT98K-1092-1 (male) and susceptible IT99K-1060 (female); and for CMV, between tolerant IT98K-1092-1 (female) and susceptible IT99K-573-1-1 (male). The F1 progenies were advanced to F2, and some F1 plants were backcrossed to the two parental lines. Reciprocal crosses were made and the 7-day-old seedlings of P1, P2, F1, F2, BCP1, and BCP2 were phenotyped by mechanical inoculation with BCMV-BlCM, SBMV, and CMV under screenhouse conditions. Data on disease incidence and severity were taken at weekly intervals for 5-week post-inoculation. Virus infections were confirmed via antigen-coated plate enzyme-linked immunosorbent assay or reverse transcription-polymerase chain reaction. Chi-square analysis of the genetic segregation indicated that a recessive gene pair in IT97K-1042-3 controlled the inheritance of resistance to BCMV-BlCM. Duplicate dominant genes conditioned the resistance to SBMV and tolerance to CMV in IT98K-1092-1. The backcrosses confirmed the monogenic and digenic inheritance patterns, whereas reciprocal crosses indicated absence of cytoplasmic effects.en
dcterms.accessRightsLimited Accessen
dcterms.audienceScientistsen
dcterms.available2022-06-22en
dcterms.bibliographicCitationOgunsola, K.E., Fatokun, C.A., Boukar, O. & Kumar, P.L. (2022). Inheritance of resistance to three endemic viral diseases of cowpea in Nigeria. Journal of Crop Improvement, 1-18.en
dcterms.extentp. 291-308en
dcterms.issued2023-03-04en
dcterms.languageenen
dcterms.licenseCopyrighted; all rights reserveden
dcterms.publisherInforma UK Limiteden
dcterms.subjectcowpeasen
dcterms.subjectvirusesen
dcterms.subjectgenotypesen
dcterms.subjectbreeding linesen
dcterms.typeJournal Articleen

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