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Trait association and path analysis for cassava genotypes in four agroecological zones of Nigeria

dc.contributor.authorAina, O.O.
dc.contributor.authorDixon, A.
dc.contributor.authorAkinrinde, E.
dc.date.accessioned2019-12-04T11:19:24Z
dc.date.available2019-12-04T11:19:24Z
dc.date.issued2007
dc.identifier.citationAina, O., Dixon, A. & Akinrinde, E. (2007). Trait association and path analysis for cassava genotypes in four agroecological zones of Nigeria. Journal of Biological Sciences, 7(5), 759-764.
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3460
dc.description.abstractThe associations among different traits and their direct and indirect influence on yield using the path analysis and correlation procedures were examined in 20 broad-based cassava genotypes to understand how inter-character relationships influences root yield. Field evaluation was carried out in 4 agroecological zones of Nigeria for two cropping seasons. Data were collected on morphological and yield parameters such as plant height, stem girth, canopy volume, shoot weight, leaf size, number of roots, root size and root yield. Results showed that root parameters such as medium-sized roots with correlation coefficient (r) of 0.95, number of roots (r = 0.91) and small-sized roots (r = 0.77) were highly significantly (p< 0.001) correlated) with root yield. Path analysis revealed that number of roots had the largest direct effect on root yield with a direct path coefficient effect (P) of 0.61, accounting for 86% of the total direct + indirect effects, followed by number of medium-sized roots (p = 0.23), that accounted for 79.2% of the total direct + indirect effects. Small-sized roots had a negative direct effect on root yield (p = -1.21) but a positive indirect effect (p = 1.91) via number of roots. Number of storage roots and medium-sized roots both contributed the largest influence on storage root yield in cassava. These parameters should, therefore, be considered together while selecting for cassava genotypes with higher storage root yield potentials.
dc.language.isoen
dc.subjectCassava Genotypes
dc.subjectTraits Association
dc.subjectRoot Yield
dc.subjectStorage Root
dc.subjectCorrelation Analysis
dc.subjectPath Coefficient
dc.titleTrait association and path analysis for cassava genotypes in four agroecological zones of Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.iitasubjectGenetic Improvement
cg.iitasubjectPost-Harvesting Technology
cg.iitasubjectFood Security
cg.iitasubjectPlant Production
cg.iitasubjectLivelihoods
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Diseases
cg.iitasubjectAgribusiness
cg.iitasubjectDisease Control
cg.iitasubjectDomestic Trade
cg.iitasubjectPlant Breeding
cg.iitasubjectPests Of Plants
cg.accessibilitystatusLimited Access
local.dspaceid95431
cg.identifier.doihttps://doi.org/10.3923/jbs.2007.759.764


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