| Registro completo |
| Provedor de dados: |
Bragantia
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| País: |
Brazil
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| Título: |
Plot size and number of replications to evaluate the grain yield in oat cultivars
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| Autores: |
Lavezo,André
Cargnelutti Filho,Alberto
Bem,Cláudia Marques de
Burin,Cláudia
Kleinpaul,Jéssica Andiara
Pezzini,Rafael Vieira
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| Data: |
2017-12-01
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| Ano: |
2017
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| Palavras-chave: |
Avena sativa L.
Variability
Uniformity trial
Experimental design
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| Resumo: |
ABSTRACT The objectives of this study were to determine the optimum plot size (Xo) and the number of replications to evaluate grain yield and verify the variability of Xo among oat cultivars. Thirtytwo uniformity trials of 3 × 3 m were performed, being 8 from each cultivar (URS Charrua, URS Taura, URS Estampa, and URS Corona). Each uniformity trial was divided in 36 basic experimental units (BEU) of 0.5 × 0.5 m. Grain yield was determined in each BEU. The Xo was determined by the method of maximum curvature of the coefficient of variation model. Mean comparisons among cultivars were performed by the Scott-Knott test via bootstrap. The number of replications was calculated by an iterative process until convergence for experiments in completely randomized design (CRD) and randomized block design (RBD). Scenarios formed by i combinations (i = 3, 4, …, 50) treatments — with d least differences among treatment means to be detected as significant at 5% probability of type I error by Tukey test, expressed as a percentage of the overall experimental mean (d = 10%, 15%, 20%, 25%, 30%, 35%, 40%, and 45%) — were planned. The Xo of 1.57 m2 is enough to evaluate the grain yield in these 4 oat cultivars. Four replications to evaluate grain yield with up to 50 treatments in the experimental designs of CRD and RBD are enough to identify significant differences among treatment means of 40.53% of the overall experimental mean, by Tukey test at 5% probability of type I error.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400512
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| Editor: |
Instituto Agronômico de Campinas
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| Relação: |
10.1590/1678-4499.2016.410
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| Formato: |
text/html
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| Fonte: |
Bragantia v.76 n.4 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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