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Pasture and forage plant breeding is complicated by the perennial nature of the plants, the diversity of environments in which improved cultivars will be used, and the complex criteria of merit involved, criteria that necessarily include some measure of impact on the efficiency of animal producti...
A methodology to describe quality and quantity characteristics of bean var. is presented. A complete list of data that should be taken is included and each item is explained. Data are classified according to the growth stage in which they should be taken: seedling, flowering, pod fill, physiologi...
Se presenta una metodologia para la descripcion de caracteristicas cualitativas y cuantitativas de var. de frijol. Se incluye una lista completa de los datos que se deben tomar y una explicacion de cada uno de ellos. Los datos se clasifican segun la epoca en que se deben tomar: en estado de plant...
Se presenta informacion de la transformacion genetica de Stylosanthes guianensis CIAT 184, obtenida por regeneracion de explantes inoculados con cepas de Agrobacterium tumefaciens y A. rhizogenes. Se describen brevemente los trabajos realizados con 14 lineas somaclonales de S. guianensis CIAT 224...
Two essentials for breeding new cultivars of Brachiaria are germplasm diversity and information on basic biological aspects of major species. This paper reviews current knowledge on the cytological behavior, mode of reproduction and its inheritance, and crossing compatibility of different species...
Important aspects related to the genetics and cytogenetics of cassava are reviewed. One of the most appropriate techniques for genetic recombination in cassava is polycrossing; breeding methods most commonly used are clonal selection and directed crossbreeding. Indications are also given of flora...
Se revisan los aspectos mas importantes relacionados con la genetica y la citogenetica de la yuca. Se observa que una de las tecnicas mas apropiadas para la recombinacion genetica en yuca es el policruzamiento; los metodos de mejoramiento mas utilizados han sido la seleccion clonal y el cruzamien...
A breeding program to select low-mimosine lines of leucaena has been in progress since 1970. Selections were evaluated in two field trials at Lansdown. Although the low-mimosine selections did indeed have lower mimosine than the control cultivars, their dry matter yield was also inferior (about t...
The yield attributes of 18 accessions of Centrosema, comprising the species, C. macrocarpum, C. brasilianum, Centrosema sp. nov. were compared in two experiments under a cutting regime. Small, grazed swards of various Centrosema spp. sown with Andropogon gayanus in mixture were also studied, with...
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