Qualidade das sementes de soja cultivar DM 66168RSF IPRO produzidas em diferentes populações de plantas, classificadas em diferentes peneiras.

It is important to define the appropriate population density for the production of soybean seeds, in order to obtain better quality characteristics. The objective of this work was to evaluate the physiological quality through the germination test of soybean seeds cultivar DM 66168RSF IPRO, originating from different populations of plants, classified in sieves of 6 and 7mm. An adequate plant stand can contribute to higher productivity and seed quality. These data are relevant to help producers make more assertive decisions about the management of population density in the production of soybean seeds. The work was carried out at the Seed Technology Laboratory - LABTS - and at the annual crop production sector of the Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais (IFMG) - Campus Bambuí. The experimental design used was randomized blocks, with5 replications and 4 different populations of soybean plants: 270,000/ha, 350,000/ha, 420,000/ha and 500,000/ha. The following variables were evaluated: germination of normal seedlings (PLANOR), damaged abnormal seedlings (PLADAN), deformed abnormal seedlings (PLADEF), deteriorated abnormal seedlings (PLADET), hard seeds (SEDUR), dormant seeds (SEDOR), dead seeds ( SEMOR), weight of a thousand seeds (PMS) and classification in sieves. Data were submitted to analysis of variance, and the means of interaction or main effects were compared using the scott-knott test significant at 5% probability. For the percentage of germination of normal seedlings (PLANOR), deformed abnormal seedlings (PLADEF), deteriorated abnormal seedlings (PLADET), dormant seeds (SEDOR), dead seeds (SEMOR), the different populations did not have significant results. For germination of damaged abnormal seedlings (PLADAN), hard seeds (SEDUR), weight of a thousand seeds (PMS) and sieve classification, the obtained data showed significant results.