Adaptabilidade e estabilidade de cultivares de trigo na região das Missões

Abstract

The adaptability and stability are intended to identify the best genotypes related to Genotype x Environment behavior. Keeping that in mind, methodologies have been developed that can be used in this study. For this work, it was chosen the methodology of Lin and Binns (1998), modified by Carneiro (1998). The wheat crop cultivars trial was conducted Soil preparation was carried out in a conventional manner. in the experimental area of Federal University of Fronteira do Sul - Campus Cerro Largo, in the 2022 harvest year. The experiment was carried out in two sowing seasons: the first one on June 3rd and the second one on July 5th, both counting six genotypes from BIOTRIGO, four from OR SEMENTES and there from EMBRAPA, adding up to thirteen genotypes. The delineation for conducting the experiment was through randomized blocks, with three blocks per sowing season. Soil preparation was carried out in a conventional manner, with fertilizing recommendations according to the needs of the plant, without using agrochemicals for pest and disease control. Sowing was done manually and the quantity of viable plants was according to the recommendations from the company that provided the seeds. Harvesting was also done manually and the obtained data were estimated to Kg ha-¹ . As for the assessments, the results were submitted to an analysis of variance. They indicated a significant interaction between the studied factors, which were: treatments, environments and treatment x environments. Presented the interactions, analysis of adaptability and stability were carried out, using the chosen methodology. The average grain yield of the first season was better, with 3636 Kg ha-¹; the second with the average yield of 2647 Kg ha-¹. The genotypes that stood out were ORS Guradião, BRS Reponte and ORS Agile, showing that they have better adaptability and stability.