Analysis of variance in augmented block design and Scott-Knott’s test in hybrid corn selection studies

IF 0.7 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Pesquisa Agropecuaria Brasileira Pub Date : 2023-03-13 DOI:10.1590/s1678-3921.pab2022.v57.03023

Juaci Vitória Malaquias, R. Amabile, Felipe Zorzo, João Victor Pinheiro Melo, M. Fagioli

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Abstract

Abstract The objective of this work was to present a methodological alternative for studies of the characterization and selection of corn (Zea mays) genotypes, through the joint analysis of variance of an augmented block design, using Scott-Knott’s test, and to present the hybrids selected from the adopted strategy, to show its efficiency. For the application of the methodology, a case study was used: the selection of superior corn hybrids for the Brazilian Cerrado. In four locations, 70 experimental hybrids were evaluated in an augmented block design without replicates, with three controls replicated once in each block. The analysis of experimental groups applied to the augmented block design, followed by genotype classifications by Scott-Knott’s multiple comparison test, is a viable alternative for studies with a low number of replicates and a large number of genotypes. Based on the tested methodology, the following experimental hybrids are selected for grain yield: HT007, HT008, HT018, HT004, HT024, HT005, and HT071.

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杂交玉米选择研究中增强块设计和Scott-Knott试验的方差分析

摘要本研究的目的是通过Scott-Knott检验的增强块设计的联合方差分析，为玉米(Zea mays)基因型的表征和选择研究提供一种新的方法，并从所采用的策略中选择杂交品种，以证明其有效性。为应用该方法，以巴西塞拉多优良杂交玉米选育为例进行了研究。在4个地点，70个实验杂交种在没有重复的扩增区设计中进行评估，每个区重复3个对照。采用增强块设计对实验组进行分析，然后采用Scott-Knott多重比较检验进行基因型分类，对于重复次数少、基因型多的研究来说是一种可行的选择。根据试验方法，选取籽粒产量试验杂交种HT007、HT008、HT018、HT004、HT024、HT005和HT071。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pesquisa Agropecuaria Brasileira 农林科学-农业综合

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

9-18 weeks

期刊介绍： Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.