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Diallel analysis of cassava genotypes to anthracnose disease

dc.contributor.authorOwolade, F.
dc.contributor.authorDixon, A.
dc.contributor.authorAdeoti, A.
dc.date.accessioned2019-12-04T11:18:06Z
dc.date.available2019-12-04T11:18:06Z
dc.date.issued2006
dc.identifier.citationOwolade, F., Dixon, A. & Adeoti, A. (2006). Diallel analysis of cassava genotypes to anthracnose disease. World Journal of Agricultural Sciences, 2(1), 98-104.
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3042
dc.description.abstractCassava anthracnose disease (CAD) caused by Colletotrichum gloeosporioides f. sp manihotis has been recognized as one of the major economic disease of cassava in all the cassava growing regions of Africa. Little information is available on the resistance of cassava to C. Gloeosporioides f. Sp manihotis. This study was conducted to determine the relative importance of general (GCA) and specific (SCA) combining ability, maternal and non-maternal reciprocal effects on resistance to C. Gloeosporioides f. sp manihotis in selected cassava genotypes. A complete diallel mating scheme including reciprocals of nine resistant and susceptible genotypes of cassava were evaluated in the field over a period of two planting seasons. The combining ability analysis revealed that both the additive and nonadditive gene effects were present. Crosses between the resistant lines and susceptible genotypes showed intermediate disease reaction to CAD suggesting a polygenic system of resistance to the disease. The significant maternal and specific reciprocal differences among the parents and crosses indicated that maternal and/or cytoplasmic inheritance is involved in the reaction of cassava genotypes to Colletotrichum gloeosporioides f. Sp manihotis. The significant genotype X environment interaction suggested lack of stability in the development of lesions/cankers on cassava stems. Therefore, recurrent selection would be appropriate for accumulating genes for resistance to CAD in cassavaand progeny performance may not be based on their parents performance per se.
dc.language.isoen
dc.subjectCollectotichum Gloeosporiodes F. Sp Manihotis
dc.subjectCombining Ability
dc.subjectCassava Genotypes
dc.subjectDiallel
dc.subjectManihot Esculenta
dc.subjectResisitance
dc.subjectCassava Anthracnose Disease
dc.titleDiallel analysis of cassava genotypes to anthracnose disease
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationFederal University of Agriculture, Nigeria
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectFarm Management
cg.iitasubjectGenetic Improvement
cg.iitasubjectFarming Systems
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectDisease Control
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Breeding
cg.iitasubjectLivelihoods
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.iitasubjectPlant Diseases
cg.accessibilitystatusLimited Access
local.dspaceid94508


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