Browsing Turrialba by Author "Lastra, Ramón"

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Backcross populations for genetic analysis of Theobroma cacao. Catongo X Tree 33 (Catongo X Pound 12)

Fritz, Paul. J; Osei, Joseph; Morera, Jorge; Rodríguez, Helga; Walker, David. R; Laínez, Jorge; Lastra, Ramón (IICA, San José (Costa Rica), 1995-01)

Se estudió una población retrocruzada de 165 árboles de cacao (Theobroma cacao), originada del cruce interclonal entre Catongo y Pound 12, en el Centro Agronómico Tropical de Investigación y Enseñanza (CATIE). Después de ...
El virus rayado fino del maíz en Venezuela [Zea mays]

Lastra, Ramón; Uzcategui, Rafaela C. de (Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-10)

Maize rayado fino virus (MRFV) was isolated in Venezuela from plants showing dwarfing and parallel leaf stripes along the veins. The virus particles are isometric with 33 um in diameter and became separated in two bands ...