Evaluación de líneas de arroz obtenidas mediante cultivo in vitro de anteras para condiciones de bajos suministros de agua

At "Los Palacios» Rice Research Station, belonging to the National Institute of Agricultural Sciences (INCA), 55 lines derived from in vitro anther culture of INCA LP-10/C4 153 and Amistad-82/C4 153 crossings were evaluated under field conditions, together with INCA LP-10, Amistad-82 and C4 153 parents, with drought-resistant genes, over 2001 spring. To induce low water supply conditions, the following management was employed: the water lamina was established 15 days after rice germination (DDG), interrupting water entry 35 days DDG, recovering it again at the primordium change up to 50 % flowering. These evaluations were performed: final plant height (cm), panicles/plant, 100-grain-weight, full grains/ panicle, empty grains/panicle, grain length (10 out of them) and yield/plant. Results showed a high response of F 2 hybrids to anther culture, as well as and a phenotypical variability in the tested material related to their parents. The lines showing an appropriate performance were 19, 26, 27, 28, 43, 44, 47, 48 and 49, and the parent INCA LP-10.