Yield potential and selection of off-season maize for silage and grain using GT Biplot under limited water and frost

Amanda Gonçalves Guimarães; Gessí Ceccon; Denise Prevedel  Capristo; Odair Honorato de Oliveira; Marciana Retore; Adriano dos Santos

doi:10.14393/BJ-v39n0a2023-65597

Authors

Amanda Gonçalves Guimarães Universidade Federal da Grande Dourados https://orcid.org/0000-0003-0761-8287
Gessí Ceccon Embrapa Oeste Agricultura https://orcid.org/0000-0003-2489-8954
Denise Prevedel Capristo Universidade Federal da Grande Dourados https://orcid.org/0000-0001-8906-3726
Odair Honorato de Oliveira Universidade Federal da Grande Dourados https://orcid.org/0000-0001-5462-241X
Marciana Retore Embrapa Oeste Agricultura https://orcid.org/0000-0002-1270-1061
Adriano dos Santos ATTO Sementes https://orcid.org/0000-0003-4892-4723

DOI:

https://doi.org/10.14393/BJ-v39n0a2023-65597

Keywords:

Forage, Multivariate, Yield, Zea mays.

Abstract

Maize silage has been used as a forage reserve strategy for critical periods or continuous use in animal feed. However, new genotypes and their potential must be identified. Thus, this study aimed to evaluate the potential of maize genotypes for silage and grain in one off-season in the midwest region of Brazil, under limited water and frost, and select them for this dual purpose (silage and grain) using the GT Biplot tool. The experiment was performed at Embrapa Western Agriculture in the autumn-winter season of 2021 in Dourados, Mato Grosso do Sul, Brazil. The experimental design consisted of randomized blocks of six maize genotypes (BRS1010, KWS9606, 1P2224, 1Q2383, BRS3046, and CAPO) with five replications under no-tillage. Silage points were evaluated at harvest when the grain milk line was at ¾ and maize grains at the maturation stage (dry plant). The 1P2224 and 1Q2383 maize genotypes present silage (high green and dry biomass) and grain yield potential. The GT Biplot tool identified the 1P2224 genotype as superior and suitable for cultivation or as a parent in a breeding program in the midwest region of Brazil for silage and grain yield evaluations of one off-season under limited water and frost.

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