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Cabello, R.Monneveux, P.Bonierbale, Merideth W.Khan, M.A.[Heritability of yield components under irrigated and drought conditions in andigenum potatoes.]Heritability of yield components under irrigated and drought conditions in andigenum potatoes.
Ceballos, H.Sánchez, TeresaChávez, Alba L.Iglesias F., Carlos ArielDebouck, Daniel G.Mafla, G.Tohme, Joseph M.[Variation in crude protein content in cassava (Manihot esculenta Crantz) roots]Variation in crude protein content in cassava (Manihot esculenta Crantz) roots

New semiDwarf wheat (Triticum aestivum L.) cultivars and new land management practices for Vertisols are being introduced in Ethiopia. Our objectives were to (i) determine the variation of N and P contents and concentration in the grain and whether these are related to grain yield, (ii) test cult...


Schulthess, Urs C.Feil, B.Jutzi, S.C.[Yield-independent variation in grain nitrogen and phosphorus concentration among Ethiopian wheats]Yield-independent variation in grain nitrogen and phosphorus concentration among Ethiopian wheats
Trouche, G.Vom Brocke, KirstenAguirre Acuña, S.Chow, Z[Giving new sorghum variety options to resource-poor farmers in Nicaragua through participatory varietal selection]Giving new sorghum variety options to resource-poor farmers in Nicaragua through participatory varietal selection

It has always been difficult to find forage legumes with the production characteristics that can help maximise animal performance, and that are also adapted to the alternating wet and dry seasons of the subhumid zone of africa. Among the characters in demand are drought tolerance, good herbage pr...


Mohamed-Saleem, M.A.Otsyina, R.M.[Evaluation de varietes de stylosanthes adoptees aux conditions de la zone subhumide du Nigeria]Evaluation de varietes de stylosanthes adoptees aux conditions de la zone subhumide du Nigeria

Little information is available regarding the relationship of Caribbean bean landraces with the Andean and Mesoamerican gene pools of common bean (Phaseolus vulgaris L.) While small-seeded Mesoamerican black beans are prevalent in parts of the Caribbean, many of the regionally preferred red mottl...


Durán, L.A.Blair, Matthew W.Giraldo Zapata, Martha C.Macchiavelli, Raúl E.Prophete, ENin, JCBeaver, James S.[Morphological and molecular characterization of common bean landraces and cultivars from the Caribbean]Morphological and molecular characterization of common bean landraces and cultivars from the Caribbean

If we are to breed common bean (Phaseolus vulgaris L.) for durable resistance to diseases, we must understand pathogenic variation and find sources of resistance. Our first objective was to determine the patterns of pathogenic variation found among isolates of Phaeoisariopsis griseola (PG), the f...


Pastor Corrales, Marcial A.Jara, Carlos E.Singh, Shree P.[Pathogenic variation in, sources of, and breeding for resistance to Phaeoisariopsis griseola causing angular leaf spot in common bean]Pathogenic variation in, sources of, and breeding for resistance to Phaeoisariopsis griseola causing angular leaf spot in common bean

Forty-five international races of Pyricularia grisea, representing all nine race groups, were identified in a "hot spot" breeding site (Santa Rosa) in Colombia, with the largest number included in the IA group. The international race system did not fully describe the virulence spectrum of the iso...


Correa Victoria, Fernando J.Zeigler, Robert S.[Pathogenic variability in Pyricularia grisea at a rice blast "hot spot" breeding site in Eastern Colombia]Pathogenic variability in Pyricularia grisea at a rice blast "hot spot" breeding site in Eastern Colombia

The paper summarizes research conducted at International Center for Tropical Agriculture (CIAT) on responses of cassava to extended water shortages in the field aided by modern gas-exchange and water-relation techniques as well as biochemical assays. The aim of the research was to coordinate basi...


El-Sharkawy, Mabrouk A.[Physiological characteristics of cassava tolerance to prolonged drought in the tropics : Implications for breeding cultivars adapted to seasonally dry and semiarid environments]Physiological characteristics of cassava tolerance to prolonged drought in the tropics : Implications for breeding cultivars adapted to seasonally dry and semiarid environments

Cassava (Manihot esculenta) is an important staple crop, especially in the arid tropics. Because roots of commercial cassava cultivars contain a limited amount of provitamin A carotenoids, both conventional breeding and genetic modification are being applied to increase their production and accum...


Welsch, RArango, JacoboBar, CSalazar, BAl-Babili, S.Beltrán Giraldo, Jorge AlonsoChavarriaga Aguirre, PaulCeballos, H.Tohme, Joseph M.Beyer, Peter[Provitamin A accumulation in Cassava (Manihot esculenta) roots driven by a single nucleotide polymorphism in a phytoene synthase gene[W]]Provitamin A accumulation in Cassava (Manihot esculenta) roots driven by a single nucleotide polymorphism in a phytoene synthase gene[W]

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