02747naa a2200229 a 450000100080000000500110000800800410001910000140006024501120007426000090018652019570019565000170215265000130216965000140218265000120219665000090220870000200221770000280223770000230226570000160228877302130230418879082012-02-29       2011    bl uuuu     u00u1 u    #d1 aZUCHI, J.  aQuality of soybean (glycine max (L.) Merrill) seed artificially cooled and stored in a conventional manner.  c2011  aThe production of high quality seeds, in any company, requires an internal quality control program and it needs to be well established and well managed. Among the various processes by which soybean seeds are submitted, the storage period takes important role because of the tropical conditions in Brazil. The aim of this study was to evaluate the maintenance of physiological quality of soybean seeds artificially cooled and stored in a conventional manner. The experiment was settled at the seed company “Sementes Campo Verde LTDA”, located in Campo Verde, Mato Grosso state, latitude 15 ° 32 ‘48’ S’, longitude 55 ° 10’ 08’’ W and height 736 meters. Six seed lots of the cultivars Monsoy 8757, TMG 115 RR, and BRS Valiosa were evaluated in the study. They were cooled at 16 oC and those non-cooled were kept at approximately 23 oC. Each lot pile contained 360 bags of 40 kg of soy bean seeds. The seeds were cooled by a dynamic cooling process using an equipment from CoolSeed Company; model PCS 80, with 4-cooler-circuits, 130 kW of power and 225 amperes. The seeds were cooled after passing through the entire classification process. The experiment was installed in March 2009; each experimental plot contained nine experimental units (bags) for seed quality analysis, totaling 54 experimental units. Each lot pile was divided into three portions, basal, middle and top, and each portion consisting of three bags. The seed samples were taken at three storage periods (zero, 60 and 120 days of storage) and 1.5 kg of seeds were taken from each bag. The following tests were performed: accelerated aging, seedling emergence in sand substrate, electrical conductivity, tetrazolium and seed pathology. Based on the results we conclude that artificial cooling is beneficial for the preservation of soybean seed quality in conventional storage; it also slows down the seed deterioration process and reduces fungi infection to the seeds.  aSeed quality  aSoybeans  aQualidade  aSemente  aSoja1 aSEDIYAMA, C. S.1 aLACERDA FILHO, A. F. de1 aFRANCA NETO, J. B.1 aREIS, M. S.  tInformativo ABRATES, Brasília, DFgv. 21, n. 1, p. 242, abr. 2011. N. Especial, ref. 334. Edition of the Abstracts: 10th Conference of the International Society for Seed Science, Costa do Sauípe, Apr. 2011.