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Growth, yield and disease responses of 12 cassava genotypes evaluated for two cropping seasons in a derived savannah zone of southeastern Nigeria

dc.contributor.authorBaiyeri, K.P.
dc.contributor.authorEdibo, G.O.
dc.contributor.authorObi, I.U.
dc.contributor.authorOgbe, F.O.
dc.contributor.authorEgesi, Chiedozie N.
dc.contributor.authorEke-Okoro, O.N.
dc.contributor.authorOkogbenin, Emmanuel
dc.contributor.authorDixon, Alfred G.O.
dc.date.accessioned2019-12-04T11:14:50Z
dc.date.available2019-12-04T11:14:50Z
dc.date.issued2008
dc.identifier.citationBaiyeri, K.P., Edibo, G.O., Obi, I.U., Ogbe, F.O., Egesi, C.N., Eke-Okoro, O.N., ... & Dixon, A.G.O. (2008). Growth, yield and disease responses of 12 cassava genotypes evaluated for two cropping seasons in a derived savannah zone of south-eastern Nigeria. Agro-Science, 7(2), 162-169.
dc.identifier.issn1119-7455
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2862
dc.description.abstractTen new cassava genotypes selected for high yield and tolerance to some biotic stresses were evaluated alongside the local best, Otupam and ‘TMS 30572\' (a widely cultivated hybrid genotype, as an improved check) for two cropping seasons with a view to obtaining suitable genotype(s) that could be recommended for release to farmers. The results revealed that only TMS-96/0304, TMS-96/1672 and NR-930255 had above 90% sprout survival at 12 months after planting. Severity of cassava mosaic disease (CMD), cassava anthracnose disease (CAD) and cassava bacterial blight (CBB) varied among genotypes, plant age, and the cropping year. Symptom expressions of CMD and CBB were generally higher on the local best, Otupam and NR-930255. The severity of cassava green mite was moderate and statistically similar on all the genotypes while severity of cassava mealybug was mild. Hybrids NR930255, TMS96/1672 and TMS96/0304 produced the highest number of tubers. These genotypes also significantly (P< 0.05) produced the highest harvested tuber yield per hectare: NR 930255 (31.0 t/ha), TMS 96/1672 (28.0 t/ha) and TMS 96/0304 (29.4 t/ha). The three genotypes had the least percent yield difference between the potential and the actual yield. Mean rank-sum for all traits measured suggested that the most adaptable genotypes to Nsukka agro-ecology after two years of evaluation were NR-930255, TMS 96/0304 and TMS96/1672, but the poor disease ratings for NR-930255 and TMS 96/0304 precluded their recommendation for release while TMS 96/1672 could be recommended for release to farmers.
dc.description.sponsorshipInternational Fund for Agricultural Development
dc.language.isoen
dc.subjectAdaptation
dc.subjectCassava
dc.subjectDerived Savannah
dc.subjectAgro-Ecorogy
dc.subjectDisease And Pest Resistance
dc.subjectCassava Green Mite
dc.subjectAfrican Cassava Mosaic Virus
dc.subjectGenotypes
dc.titleGrowth, yield and disease responses of 12 cassava genotypes evaluated for two cropping seasons in a derived savannah zone of southeastern Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversity of Nigeria
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPlant Breeding
cg.iitasubjectCassava
cg.iitasubjectPlant Production
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectFarming Systems
cg.iitasubjectFood Security
cg.iitasubjectPlant Diseases
cg.iitasubjectGenetic Improvement
cg.iitasubjectDisease Control
cg.iitasubjectPests Of Plants
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectFarm Management
cg.accessibilitystatusLimited Access
local.dspaceid93963
cg.identifier.doihttp://dx.doi.org/10.4314/as.v7i2.1598


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