%0 Tesis de Pregrado %A Ampuño Muirragui, Ana Pilar %E Barreno Ojeda, Juan Francisco %I Quevedo: UTEQ %D 2015 %G %T Determinación de la influencia del tiempo de cosecha sobre el rendimiento de granos enteros en el pilado y la calidad fisiológica de las semillas de arroz. Quevedo. %U http://repositorio.uteq.edu.ec/handle/43000/250 %X The present research was conducted between May and November 2011 in the Quality Control Laboratory of the National Rice Research Station Southern Coast "Dr. Enrique Ampuero Pareja "and the Seed Analysis Laboratory Experiment Station of Tropical Pichilingue Autonomous National Institute of Agricultural Research (INIAP). The overall research aimed to determine the influence of harvest time on the yield of the milled whole grains and seed physiological quality of rice. The specific objectives were to determine the performance of whole grain varieties Fedearroz 21 and SFL-09, set the most appropriate harvest time to obtain quality seed varieties Fedearroz 21 and SFL-09, depending on the time of flowering, and evaluate the quality of the grain industry, according to the harvest season. The factors studied were: Moments of harvest (30, 40, 50, 60 and 70 days after flowering). Harvesting seasons (winter and summer) and Variety (Fedearroz 21 and SFL-09) was used completely randomized design with factorial 2 x 5 x 2, making a total of twenty treatments with three replications. For comparison of means between treatments, we used the Tukey test at 95% probability. Regression analysis was performed to verify the behavior of the whole grain yield and quality of rice seeds physiological, depending on the time of harvest. The variables evaluated were: grain moisture, volumetric weight, grain yields pilados, whole grain yield, grain length and width of shelling, hulling grain shape, grain percentage with white center, germination, electrical conductivity, and cold test field emergence. Statistical analysis determined that the moisture content of the seed was greater in early crops (30 DDF), naturally decreasing to 70 DDF, whereas when the grain crops had made a moisture content between 15% and 21% provided high rates of return in the milled whole grains, viability and seed vigor. It was observed that the test weight was not significantly affected by the delay in harvest……………….