Genetic characterization of cassava (Manihot esculenta Crantz) traits using argo-morphological characters

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationUniversity of Lagosen
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.placeLagos, Nigeriaen
cg.subject.iitaAGRONOMYen
cg.subject.iitaCASSAVAen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaGENETIC IMPROVEMENTen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.iitaPOST-HARVESTING TECHNOLOGYen
cg.subject.impactAreaNutrition, health and food security
cg.subject.impactPlatformNutrition, Health and Food Security
cg.subject.sdgSDG 2 - Zero hungeren
dc.contributor.authorIyanda, S.A.en
dc.date.accessioned2025-01-21T07:50:08Zen
dc.date.available2025-01-21T07:50:08Zen
dc.identifier.urihttps://hdl.handle.net/10568/169516
dc.titleGenetic characterization of cassava (Manihot esculenta Crantz) traits using argo-morphological charactersen
dcterms.abstractCassava (Manihot esculenta Crantz) is an important crop in Nigeria where leaves and tubers are eaten. However, its genetic variability remains unexplored in Nigeria. Local varieties are precious genetic resources because of their diversity. Mastery of this diversity is an important basis for crop improvement through plant breeding programs. Local cassava accessions (99) were collected mainly from the international institute of tropical agriculture (IITA), Ibadan, Southwestern part of Nigeria. These accessions have been planted with the objective to characterize them, based on morphological agro-morphological traits, and parameters were recorded at three, six, nine and twelve months after planting. The experiment was carried out in experimental station of IITA, and sixty-two (62) morphological were used. Significant differences (p<0.05) were observed for all the 62 analysed morphological traits. A total of twenty-one principal component analysis (PCA) in the trait sets accounted for eigen value range of 7.55 to 1.01 and a cumulative percentage variance of 83.95% to 11.45% of the total genetic variation. The Principal Component Analysis reveals traits with positive high dispersion of the accessions. On the cluster analysis, the accessions were classified in four groups. The matrices of genetic dissimilarity were used in the construction of dendrograms using the UPGMA method. We observed a high variation of agronomical descriptors which were capable to separate the accessions into four distinct clusters. This work showed the variation in agronomic traits existing among cassava accessions in IITA, Ibadan, Nigeria that could be exploited to enhance cassava breeding programs.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.bibliographicCitationIyanda, S.A. (2021). Genetic characterization of cassava (Manihot esculenta Crantz) traits using argo-morphological characters. Lagos, Nigeria: University of Lagos, (86 p.).en
dcterms.descriptionIITA supervisor: Dr. B. Faloyeen
dcterms.extent86 p.en
dcterms.issued2021-11
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherUniversity of Lagosen
dcterms.subjectcassavaen
dcterms.subjectgenetic diversityen
dcterms.subjectplant diseasesen
dcterms.subjectgenetic improvementen
dcterms.subjectprocessingen
dcterms.typeThesis

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