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The success of most crop improvement programs largely depends upon the genetic variability and the heritability of desirable traits. The magnitude and type of genetic variability help the breeder to determine the selection criteria and breeding schemes to be used for improvement purposes. A scree...


Omoigui, L.O.Ishiyaku, M.F.Kamara, A.Y.Alabi, S.O.Mohammed, S.G.[Genetic variability and heritability studies of some reproductive traits in cowpea (Vigna unguiculata (L.) Walp.)]Genetic variability and heritability studies of some reproductive traits in cowpea (Vigna unguiculata (L.) Walp.)

Ceballos, H.Morante, NelsonCalle, FernandoLenis, Jorge I.Jaramillo, GustavoPérez, Juan Carlos[Cassava genetic improvement]Cassava genetic improvement

Sorghum is the third most important cereal crop in India and, over both the rainy (kharif) and the Post-rainy (rabi) seasons, totals a combined area of more than 11 million ha. Rabí sorghum is important for both food and fodder in the drought-prone areas of the states of Maharashtra (3.3 million ...


Rana, B.S.Kaul, S.L.Appaji, ChariParbhakarKalyanshetty, N.S.Reddy, B.V.S.Witcombe, John R.Virk, Daljit S.[Participatory varietal selection in rabi sorghum in India]Participatory varietal selection in rabi sorghum in India
Kikuno, H.Matsumoto, R.Shiwachi, H.Asiedu, Robert[Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)]Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)

The effects of genotype (G), environment (E), and G x E interaction on carotenoid concentration and yield of 25 yellow-fleshed (YF) and three white-fleshed (WF) cassava genotypes were investigated at five locations in Nigeria for two consecutive cropping seasons. The locations represented the maj...


Ssemakula, G.N.Dixon, Alfred G.O.Maziya-Dixon, B.B.[Stability of total carotenoid concentration and fresh yield of selected yellow-fleshed cassava (Manihot esculenta Crantz)]Stability of total carotenoid concentration and fresh yield of selected yellow-fleshed cassava (Manihot esculenta Crantz)

Carsky, R.Masajo, T.[Effect of toposequence position on performance of rice varieties in inland valleys of West Africa: RCMP Research monograph, No. 9]Effect of toposequence position on performance of rice varieties in inland valleys of West Africa: RCMP Research monograph, No. 9

In 2004 and 2005 through field trials in over 2500 locations in several agroecological zones, 40 new cassava varieties were introduced in Nigeria. The trials were managed by scientists, extension workers and farmers. The aim in introducing these new varieties was to pre-emptively manage cassava m...


Okechukwu, R.U.Dixon, Alfred G.O.Akoroda, M.O.Mwangi, M.Bandyopadhyay, Ranajit[Root rot resistance in new cassava varieties introduced to farmers in Nigeria]Root rot resistance in new cassava varieties introduced to farmers in Nigeria

Iron toxicity reduces rice (Otyza sativa L.) grain yield in many poorly drained swamps in West Africa. Two methods for alleviating Fe toxicity were examined, (i) the use of a resistant genotype, and l(ii) planting on ridges to aerate the upper root zone. Grain yield responses to these factors wer...


Winslow, M.Yamauchi, M.Alluri, F.Masajo, T.[Reducing iron toxicity in rice with resistant genotype and ridge planting]Reducing iron toxicity in rice with resistant genotype and ridge planting

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