University Tiradentes

The activation of the seeds for the light is on to a called pigment system fitocrmo. This pigment if finds in all the superior plants, that when absorbing light in one definitive change, wave length of structure biochemist and allows, or not, fotomorfogentica reply (BORGES & RENO, 1993). The light is necessary for the germination of the seeds of some species. However, the sensitivity of the seeds to the effect of the light varies in agreement with the quality, the luminous intensity and the time of irradiation, as well as with the period and the temperature during the process of embebio (TOOLE, 1973; LABOURIAL, 1983). In reply the light, the species can be classified in positive fotoblsticas, that is, those that need light to germinate; negative fotoblsticas, that better germinate in the absence of light or neutral fotoblsticas that are insensitive to the light (STEFANELLO et al., 2006). Being thus, the present work had as objective to verify the influence of the quality of the light in the germination of seed of Zea maize MATERIAL mays L. AND METHODS the work was lead in the Laboratory of Botany of the University Tiradentes- UNIT, during the August months the November of 2009.

Seeds of maize had been used (Zea mays L.), proceeding from the city of Jequi in the southwest of the Bahia the 365 km of Salvador; kept in plastic bag and stored in refrigerator 18o C, during the accomplishment of the experiments. 800 treated seeds and with one had been selected solution of hipoclorito of sodium 3%, during 20 minutes for after that being washed with distilled water perfazendo the total of three lauderings for withdrawal of the excess of chlorine. The method was proceeded from density with distilled water eliminating the seeds that were floating. The experimental delineation block-type was entirely casualisados with five treatments and four repetitions.