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Optimum sample size in quantitative characteristics of seeds of polyembrynic mango Rev. Bras. Frutic.
Arellano-Durán,Nely; Villegas-Monter,Ángel; Muñoz-Orozco,Abel.
Abstract Determining the sample size in a scientific investigation is important because it gives reliability in the results together with the efficiency in the use of resources and optimization of time. Polyembryony is a characteristic that allows to obtaining clonal and zygotic plants in the same seed. In mango this characteristic is presented, however, there is no information that mentions which is the adequate sample size to evaluate it. The objective of the present work was to determine the optimum sample size by means of the maximum curvature method for future polyembryony studies. Mangoes from the cultivar Manila and Ataulfo were collected from the states of Guerrero and Nayarit, Mexico. In each state, two orchards of each cultivar were chosen, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mangifera indica; Maximum curvature method; Coefficient of variation.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300803
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Estimation of optimum plot sizes in field experiments with annatto Bragantia
Viana,Anselmo Eloy Silveira; São José,Abel Rebouças; Matsumoto,Sylvana Naomi; Sales-Júnior,Sálvio Gusmão.
The objective of this study was to estimate the optimum plots size for experiments with annatto. The uniformity assay consisted of 12 rows with 12 plants in each row. The variety Bico de Pato was used, planted in 5 x 4 m spacing and evaluated at 5 years of age. Three methods were used: maximum curvature, modified maximum curvature and the comparison of variances. The plot size estimate varied according to the methodology used and the characteristic analyzed. The adequate plot size was found to be 107.2 m² (5 plants) using the modified maximum curvature method, which resulted in more precise estimates , taking into consideration that the ideal plot should facilitate the efficient evaluation of all characteristics analyzed in this experiment.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bixa orellana L.; Coefficient of variation; Variance; Maximum curvature method; Experimentation.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052002000200011
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