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Variation in qualitative and quantitative traits of cassava germplasm from selected national breeding programmes in subSaharan Africa

dc.contributor.authorKawuki, Robert S.
dc.contributor.authorFerguson, M.
dc.contributor.authorLabuschagne, M.T.
dc.contributor.authorHerselman, L.
dc.contributor.authorOrone, J.
dc.contributor.authorRalimanana, I.
dc.contributor.authorBidiaka, M.
dc.contributor.authorLukombo, S.
dc.contributor.authorKanyange, M.C.
dc.contributor.authorGashaka, G.
dc.contributor.authorMkamilo, G.S.
dc.contributor.authorGethi, J.
dc.contributor.authorMkamilo, G.S.
dc.date.accessioned2019-12-04T11:10:38Z
dc.date.available2019-12-04T11:10:38Z
dc.date.issued2011-05
dc.identifier.citationKawuki, R.S., Ferguson, M., Labuschagne, M.T., Herselman, L., Orone, J., Ralimanana, I., ... & Mkamilo, G. (2011). Variation in qualitative and quantitative traits of cassava germplasm from selected national breeding programmes in sub-Saharan Africa. Field Crops Research, 122(2), 151-156.
dc.identifier.issn0378-4290
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2217
dc.description.abstractAn improved understanding of phenotypic variation within cassava germplasm in southern, eastern and central Africa will help to formulate knowledge-based breeding strategies. Thus, the overall objective of this study was to examine the phenotypic variation in cassava germplasm available within six breeding programmes in Africa, namely Uganda, Kenya, Tanzania, Rwanda, Democratic Republic of Congo and Madagascar. In each country, single-row plots were used for assessment of 29 qualitative traits and evaluation of four quantitative traits: root dry matter content (DMC), harvest index (HI), leaf retention (LR) and root cortex thickness. Qualitative traits provided limited discrimination of cassava germplasm. However, differences in DMC, HI, LR and root cortex thickness were observed among the germplasm indicating scope for genetic improvement. Highest average DMC was registered in Uganda (39.3%) and lowest in Tanzania (30.1%), with the elite genotypes having a relatively higher DMC than local genotypes. Highest average HI was observed in Uganda (0.60) and lowest in Kenya (0.32). Cassava genotypes displayed varied root peel thickness (0.34–4.89 mm). This study highlights variation in agronomic traits that could be exploited to increase cassava productivity.
dc.description.sponsorshipRockefeller Foundation
dc.description.sponsorshipCGIAR Generation Challenge Program
dc.language.isoen
dc.subjectCassava
dc.subjectMorphology
dc.subjectPhenotypes
dc.titleVariation in qualitative and quantitative traits of cassava germplasm from selected national breeding programmes in subSaharan Africa
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationNational Crops Resources Research Institute, Uganda
cg.contributor.affiliationUniversity of the Free State
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationFoibe Fikarohana Ho an' ny Fampandrosoana ny Ambanivohitra
cg.contributor.affiliationInstitut National pour l'Etude et la Recherche Agronomiques, Democratic Republic of Congo
cg.contributor.affiliationInstitut des Sciences Agronomiques du Rwanda
cg.contributor.affiliationNaliendele Agricultural Research Institute, Tanzania
cg.contributor.affiliationKenya Agricultural Research Institute
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.regionCentral Africa
cg.coverage.regionSouthern Africa
cg.coverage.countryUganda
cg.coverage.countryKenya
cg.coverage.countryTanzania
cg.coverage.countryRwanda
cg.coverage.countryCongo, Dr
cg.coverage.countryMadagascar
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.journalField Crops Research
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid90948
cg.identifier.doihttps://dx.doi.org/10.1016/j.fcr.2011.03.006


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