Maturação de sementes de sorgo sacarino produzido no semiárido

Abstract

The sweet sorghum is cultivated to get raw material for the production of ethanol and stands by display short cycle and be very resistant to dry conditions. The objective of this work was evaluate the quality of sweet sorghum seeds cultivated in semiarid conditions trying obtain the ideal harvest season. Was implanted an experiment in Pentecoste-CE with two varieties (BRS 506 and BRS 511) performing the seeds harvest in four seasons (30, 37, 44 and 51 days after full bloom). The seeds collected in the field were taken to the Seed Analysis Laboratory where were performed the processing, mass of thousand seeds, germination speed index, first count, seedling dry weight, seedling length, accelerated aging. The seeds presented optimal physiological conditions (90% of germination) presenting their maximum potential germination at 44 days after flowering.