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Estado actual del mejoramiento del arroz mediante la utilización de especies silvestres de arroz en CIAT. Este trabajo presenta el uso de especies silvestres de arroz en la obtención de germoplasma mejorado con mayor potencial de rendimiento y una base genética ampliada. Tres especies silvestres ...


Martínez Racines, César PompilioTohme, Joseph M.López Gerena, J.Borrero Correa, Jaime C.McCouch, Susan R.Roca, William M.Chatel, MGuimaraes, Elcio Perpétuo[Estado actual del mejoramiento del arroz mediante la utilización de especies silvestres de arroz en CIAT]Estado actual del mejoramiento del arroz mediante la utilización de especies silvestres de arroz en CIAT

To satisfy farmer and consumer preferences, breeding efforts to increase yield potential in common bean must take into account the interrelated effects of growth habit, seed size, maturity, and gene pool on yield expression in segregating populations. To examine the relationships among these trai...


Kornegay, Julia L.White, Jeffrey W.Ortiz de la Cruz, O.[Growth habit and gene pool effects on inheritance of yield in common bean]Growth habit and gene pool effects on inheritance of yield in common bean

The genetics of resistance to bean golden mosaic virus (BGMV) was studied in an 8×8 complete diallel cross of common bean, Phaseolus vulgaris L. The 28F1 hybrids, their reciprocals, and eight parents were artificially inoculated with BGMV under glasshouse conditions. Data were recorded and analyz...


Morales, Francisco JoséSingh, Shree P.[Genetics of resistance to bean golden mosaic virus in Phaseolus vulgaris L.]Genetics of resistance to bean golden mosaic virus in Phaseolus vulgaris L.

Bean ( Phaseolus vulgaris check for this species in other resources L.) production in Africa is constrained by edaphic stresses. A pan-African effort, Bean Improvement for Low Fertility in Africa (BILFA), was initiated in 1990 to screen beans for tolerance to several edaphic stresses. In the fir...


Wortmann, Charles S.Lunze, LOchwoh, VALynch, J[Bean improvement for low fertility soils in Africa]Bean improvement for low fertility soils in Africa

Although cassava is a major food crop, its scientific breeding began only recently compared with other crops. Significant progress has been achieved, particularly in Asia where cassava is used mainly for industrial processes and no major biotic constraints affect its productivity. Cassava breedin...


Ceballos, H.Iglesias, C.A.Pérez Velásquez, Juan CarlosDixon, Alfred G.O.[Cassava breeding: opportunities and challenges]Cassava breeding: opportunities and challenges

Hybridization of synthetic allotetraploids of S. pinnatisectum with S. etuberosum (4x-EP) with S. acaule (2n = 4x = 48) resulted in two individuals that were highly fertile, in contrast to all other progenies. The unique individuals are hexaploids, 2n = 72, while the other progenies are tetraploi...


Chavez, R.Brown, CRIwanaga, Masaru[Application of interspecific sesquiploidy to introgression of PLRV resistance from non-tuber-bearing Solanum tuberosum to cultivated potato germplasm]Application of interspecific sesquiploidy to introgression of PLRV resistance from non-tuber-bearing Solanum tuberosum to cultivated potato germplasm

Tropical soils are particularly vulnerable to fertility losses due to their low capacity to retain organic matter and mineral nutrients. This urges the development of new agricultural practices to manage mineral nutrients and organic matter in a more sustainable way while relying less on fertiliz...


Noguera, DLaossi, KRLavelle, Patrick M.Cruz de Carvalho, M.H.Asakawa, N.Botero, CésarBarot, S[Amplifying the benefits of agroecology by using the right cultivars]Amplifying the benefits of agroecology by using the right cultivars

In many low input agricultural systems, phosphorus (P) is one of the most limiting mineral nutrients for plant production. Although applying P fertilizer, if available, is the most performing practice, this should be accompanied by other measures. The use of genetically enhanced plants with impro...


Ramaekers, LRemans, RRao, Idupulapati M.Blair, Matthew W.Vanderleyden, J[Strategies for improving phosphorus acquisition efficiency of crop plants]Strategies for improving phosphorus acquisition efficiency of crop plants

Microsatellite polymorphism was studied in a sample of 39 traditional rice (Oryza sativa L.) varieties and 11 improved varieties widely planted in Cuba. The study was aimed at assessing the extent of genetic variation in traditional and improved varieties and to establish their genetic relationsh...


Álvarez, A.Fuentes, JLPuldon, VGómez, P.J.Mora, LDuque E., Myriam CristinaGallego Sánchez, Gerardo J.Tohme, Joseph M.[Genetic diversity analysis of Cuban traditional rice (Oryza sativa L.) varieties based on microsatellite markers]Genetic diversity analysis of Cuban traditional rice (Oryza sativa L.) varieties based on microsatellite markers

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