QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE DUAS CULTIVARES DE SOJA CLASSIFICADAS POR TAMANHO

Abstract

The seeds size is one of the characteristics whose effects are being analyzed by several researchers. There are reports that seeds of smaller sizes produce less vigorous plants and larger seeds produce plants with self-vigor due to the greater number of reserves. Thus, the present study aimed to analyze the physiological and physical differences of soybean seeds of two cultivars Monsoy 7110 IPRO and Monsoy 7739 IPRO by commercial sieve sizes adopted by seed producing companies (size of P1 - 5.0 to 5, 75 mm and P2 - 6.0 to 7.0 mm). Seeds from Monsoy 7110 IPRO and Monsoy 7739 IPRO soybean cultivars were used from P1 (5.0 to 5.75 mm) and P2 (6.0 to 7.0 mm) sieves, from 18/19 harvest provided by the company Cereal Gold. The experiment was set up in a completely randomized design in a 2 x 2 factorial scheme (2 sieve sizes and 2 cultivars) with 4 replications with 50 seeds. The data obtained were subjected to analysis of variance by the F test and the means were compared by Tukey test at 5% significance. The seeds size did not affect the results of physiological performance. In the physical parameters: mass of a thousand seeds, apparent specific mass, size and shape, the average values were higher in P2 sieve (6.0 mm to 7.0 mm).