Abstract: Experimental design without replication, such as Federer’s augmented
block design, allows us to determine productivity, adaptability and stability
in multi-environment trials. This work aimed to select productive wheat lines
with high adaptability and stability in preliminary trials. The grain yield of 140
homozygous wheat lines was measured in 2015 at three locations. The cultivar
TBIO Mestre was used as a check. Genetic parameters were evaluated by mixed
models, and selection was based on the harmonic mean of the relative performance
of the genetic values (HMRPGV) using models 74 (individual analysis)
and 75 (joint analysis) of Selegen software. In the joint analysis, 33 wheat lines
stood out in terms of productivity, adaptability and stability. These lines have
the potential to be evaluated in Value for Cultivation and Use (VCU) trials for
future release of new wheat cultivars.

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