Germinação e vigor de sementes de soja submetidas ao teste de envelhecimento acelerado

Abstract

The soybean is one of the most important crops in the world due to its versatility and productivity in adverse conditions, currently the cost of inputs and seed is expensive for the producer, so an assertive decision on the quality of a seed material can define the success of a crop. Therefore, this study aimed to evaluate germination and vigor of soybean (glycine max (l.) merrill) seeds subjected to accelerated aging test. For this, the study was conducted in the second semester of 2022, in the laboratory of the Pontifical Catholic University of Goiás. Seeds of three soybean cultivars were used: Olimpo 80182RSF, Soytech 783 IPRO and Intacta RR2 PRO, of the 2021/2022 crop. The standard germination test was conducted as established by the Rules for Seed Analysis (BRASIL, 2009). Were evaluated: germination (GER), plants (PA), hard seeds (SD), dead seeds (SM); accelerated aging for 48 hours (V48), seed vigor by accelerated aging for 72 hours (V72), root length from seeds without aging (CR), root length of seedlings from seeds aged for 48 hours (CR48) and root length of seedlings from seeds aged for 72 hours (CR72). The commercial cultivars studied, showed similar physiological potential for the factors germination, percentage of normal seedlings, abnormal plants, hard seeds, dead seeds and root length.The vigor of the cultivar Intacta RR2 PRO obtained through the accelerated aging test, was higher than the value verified for the cultivar Soytech 783 IPRO.