Data/hora: 26/05/2024 00:26:47

Biblioteca(s): 	Embrapa Unidades Centrais.	
Data corrente: 	24/08/2018	
Data da última atualização: 	25/02/2019	
Autoria: 	CARGNELUTTI FILHO, A.; GUADAGNIN, J. P.	
Afiliação: 	Alberto Cargnelutti Filho, Universidade Federal de Santa Maria - UFSM; José Paulo Guadagnin, Fundação Estadual de Pesquisa Agropecuária.	
Título: 	Sufficient number of experiments for the adaptability and stability analyses of maize using the Eberhart and Russell method.	
Ano de publicação: 	2018	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 6, p. 673-683, June, 2018.	
Idioma: 	Inglês	
Notas: 	Título em português: Número suficiente de experimentos para análises de adaptabilidade e estabilidade de milho pelo método de Eberhart e Russell.	
Conteúdo: 	The objective of this work was to determine the sufficient number of experiments (environments) for the adaptability and stability analyses of maize cultivars, using the Eberhart and Russell method. Grain yield data from 63 trials of maize cultivars from six groups of experiments were used. In each group, new data files were formed from all experiments (n), for the combinations of 3, 4, ..., n-1 experiments, totaling 10,381 files. Mean and estimates of the adaptability (b) and stability (S2d) parameters were obtained for each cultivar, in each file. A power function was adjusted for the amplitudes of b and S2d (dependent variables) in each cultivar, as a function of the number of experiments (independent variable), totaling 290 equations (145 cultivars × two dependent variables). For each equation, the value was determined on the abscissa axis (Xs, sufficient number of experiments), corresponding to the point of maximum curvature. The highest value among the 290 estimates of Xs, rounded up to the nearest integer, was assumed to be the sufficient number of experiments for the analyses. Seven experiments are sufficient to analyze the adaptability and stability of maize cultivars using the Eberhart and Russell method.	
Palavras-Chave: 	Genotype × environment interaction; Indicação de cultivares; Indication of cultivars; Interação genótipo × ambiente.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/181889/1/Sufficient-number-of-experiments-for-the-adaptability.pdf	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
Exemplares: 	AI-SEDE - (62932-1) - UPE - AP - DD -  -  -  - DIS