Adaptability and stability of wheat genotypes on ten environments in the states of Paraná and São Paulo, Brazil

Abstract

The expansion of wheat cultivation to new and promising regions has been an alternative to increase Brazilian production. For this purpose, the study of genotypes x environments interaction is essential for the recommendation of new cultivars. The objective of this research was to evaluate the adaptability and phenotypic stability of the grain yield of wheat genotypes grown in 10 environments in the states of São Paulo and Paraná, using Annicchiarico and AMMI methods. The experiments were composed of 20 lines and five commercial cultivars (checks), evaluated in ten environments, in randomized complete block design. The line G19 and the cultivar Ametista were stable in all environments. The G5 line showed specific adaptability to the Apucarana environment. The lines G7, G8, G18, G21 and G24 were adapted to Nova Fatima environments in the two evaluated years. Based on the results, the cultivars for a micro-region in the region of wheat can be recommended. It was verified that in the group of genotypes there is genetic variability, and that the most stability and adaptability, can be used as a source of favorable characteristics in future breeding cycles aimed at the region.