Avaliação da qualidade de sementes de feijão certificada e de uso próprio

The use of certified seeds is an excellent option to obtain better quality levels in the establishment of crops, when compared to the use of saved seeds in bean cultivation. In addition to demonstrating that obtaining high-quality seeds is important to reach new production ceilings, seeds must receive special attention, demystifying that not everything can be called a seed. The present work aims to evaluate the components indicative of physiological quality when using self-used and certified seed mixtures. The work was carried out in the seedling production nursery of the Federal Institute of Education, Science and Technology of Minas Gerais (IFMG) – Campus Bambuí. The experimental design used was in randomized blocks, with four replications, in a 5x4 randomized block design, with five treatments containing the appropriate seed mixtures. They are: T1: 100% certified seed – T2: mixture of 75% certified seeds and 25% saved seeds – T3: 50% of both (certified and saved) – T4: mixture of 75% saved seed and 25% of certified seeds – T5: 100% saved seeds. The following variables were evaluated: Percentage of Emergency; Emergency Speed Index; Average Emergency Time; Coefficient of Variation in Emergency Time; Uncertainty Index and Emergency Synchrony Index. The data were subjected to analysis of variance and the means of the main effects and were compared using the Scott Knott test at 5% probability. Therefore, it is concluded that certified seeds present the best data when evaluating the coefficient of variation in emergence time and synchrony index, when compared with saved seeds.