This study aimed to estimate and compare parameters of adaptability and stability for maize grain yield in a variety of environments by different projection methods. Data from experiments on 36 maize genotypes, in simple lattice 6x6, in 2012/13 season performed at nine growing locations in central Brazil were used. Adaptability and stability analyses were performed using the methods of Lin & Binns (1988) with decomposition, MHPRVG through REML/BLUP, AMMI-Biplot, and GGE-Biplot analysis. These methods have similarities in terms of genotype ordering but differ in precision and amount of information provided on genotype-environment (GxE) interactions. When compared to GGE-Biplot, AMMI method retained a good percentage of the total square sum, based on pattern of GxE interaction. The method of Lin & Binns with decomposition is similar to MHPRVG, but these one is more accurate, practice and informative. MHPRVG and GGE-Biplot methods should be used together to select the most promising genotypes. The genotypes G5 and G8 can be recommended for cultivation in central Brazil due to their adaptability, stability, and yield.

Several methodologies have been proposed in order to measure the influence that genotype-by-environment interaction exerts on the various characters of interest. The mixed models using REML/BLUP and GGE Biplot have been mentioned as advantageous to identify superior genotypes. The use of environmental information can be useful to find the factors that are in the real difference between the genotypes. The objective of this study was to compare statistical methodologies for the adaptability and stability analysis of cowpea genotypes in value for cultivation and use testings. The experiments were carried out from March to July 2016 and 2017, in the municipalities of Dourados and Aquidauana.  A randomized complete block design was used, with 14 genotypes and four replicates, 12 advanced lines and two commercial cultivars. After detecting significant genotype-by-environment interaction, the adaptability and phenotypic stability of cowpea genotypes were analyzed by the GGE Biplot and REML/BLUP. Both methodologies were concordant in the identification of the best cowpea genotypes for the State of Mato Grosso do Sul. The genotypes 6 (Pingo-de-ouro 1-5-4), 10 (Pingo-de-ouro 1-5-10) and 8 (Pingo-de-ouro 1-5-7) are the most suitable to be grown in the State, because they have gathered high grain yield, adaptability and stability.

Genetic parameters and genotypic values of fruits from umbu-cajazeira clones were determined using the restricted maximum likelihood/best linear unbiased prediction (REML/BLUP) method, from the morphological, physicochemical and chemical characterization of fruits. The experiment was composed of six experimental clones, in three randomized complete block designs and three replicates per plot in an unbalanced arrangement in Ipanguaçu/RN, due to non-fructification of some clones of the experiment. Morphological, physicochemical and chemical characterization of 20 fruits of each clone was performed. The variance components for REML and medium components (BLUP), were estimated using the mixed model's method REML/BLUP. The three best clones selected were from Serra do Mel, Açu, and Carnaubais. The method used allowed selection of clones with high soluble solids content and pulp yield based on the genotypic value of clones. Fruit clones from Serra do Mel can be used for pulp processing or fresh consumption. The Açu clone showed a high pulp yield and is recommended pulp processing. Carnaubais, Alto do Rodrigues, and Ipanguaçu generated fruits for fresh consumption.Key words: fresh consumption; genetic variability; mixed models; Spondias sp. Seleção de clones de umbu-cajazeira utilizando REML/BLUP RESUMOOs parâmetros genéticos e os valores genotípicos de clones de umbu-cajazeira foram determinados utilizando o método REML/ BLUP (restricted maximum likelihood/best linear unbiased prediction), a partir da caracterização morfológica, físico-química e química de frutos. O ensaio foi composto por seis clones experimentais, em delineamento blocos ao acaso com três blocos e três repetições por parcela em arranjo desbalanceado em Ipanguaçu/RN, devido a não frutificação de alguns clones do experimento. A caracterização morfológica, físico-química e química de vinte frutos de cada genótipo foi realizada. Os componentes de variância por REML e componentes de médias (BLUP) foram estimados via modelos mistos pelo método REML/BLUP. Os três melhores clones selecionados foram Serra do Mel, Açu e Carnaubais. O método utilizado permitiu a seleção de clones com alto teor de sólidos solúveis e rendimento de polpa, baseado no valor genotípico dos clones. Os frutos do clone Serra do Mel podem ser utilizados para o processamento de polpa e para o consumo in natura. O clone Açu apresentou elevado rendimento de polpa sendo recomendado para o processamento. Carnaubais, Alto do Rodrigues e Ipanguaçu apresentam frutos para o consumo ao natural.Palavras-chave: consumo ao natural; variabilidade genética; modelos mistos; Spondias sp.