Implicações da interação genótipos x ambientes sobre ganhos com a seleção em meloeiro

Silva, José Milton da; Nunes, Glauber Henrique de Sousa; Costa, Gabriel Guimarães; Aragão, Fernando Antônio de Souza; Maia, Lívia Karla Remígio

doi:10.1590/s0103-84782011000100009

Cited by 11 publications

(17 citation statements)

References 6 publications

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“…It indicates a strong relationship between phenotype and genotype when it is close to unity (or 100%). In the present study, the estimates are close to those observed by Silva, Nunes, Costa, Aragão and Maia (2011) for Galia melon lines in different environments of northeastern Brazil. They are also within the range of values observed in some studies conducted in other countries (Randhawa & Singh, 1990;Feyzian, Dehghani, Rezai, & Javaran, 2009).…”

Section: Resultssupporting

confidence: 90%

“…The interference from the environment is mainly due to soil conditions and climate. As a result, a pronounced effect was expected, as reported in studies involving the melon crop in the semiarid Brazilian region (Nunes, Andrade Neto, Costa Filho, & Melo, 2011a;Nunes et al, 2011b;Silva, Nunes, Costa, Aragão, & Maia, 2011).…”

Section: Resultssupporting

confidence: 60%

“…By adopting this procedure, gains closer to direct gains were observed (Table 5). Silva et al (2011) applied this alternative procedure in Galia melons in four municipalities of Mossoró-Assu. These authors also observed a decreased interaction in relation to the gains associated with selection.…”

Section: Resultsmentioning

confidence: 99%

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<b>Interference of genotype-by-environment interaction in the selection of inbred lines of yellow melon in an agricultural center in Mossoró-Assu, Brazil

et al. 2016

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ABSTRACT. The aims of this study were to i) identify the influence of the GxE interaction in the selection of inbred lines of melon, and ii) test the efficiency of different indexes in the selection of inbred lines with a higher yield potential and better quality fruit. For these purposes, 98 inbred lines of yellow melon and two commercial controls, Vereda and AF-646, were evaluated in a randomized block design with two replications, at the conditions present in Mossoró and Baraúna. Analyses of the following traits were performed: fruit yield, mean fruit weight, pulp thickness, pulp firmness and soluble solids content. A complex portion of the GxE interaction was predominantly detected for all traits. The recommendation in this case is to promote selection in each environment. Alternatively, selection based on the average behavior of the inbred lines is the strategy that generates the greatest gains, approaching those obtained through direct selection in each specific environment. The selection indexes aimed at reducing the expression of all traits proved to be best for both locations. The index constructed for Baraúna allowed the selection of a greater number of inbred lines with a higher yield potential and better quality fruit and, thus, greater efficiency.Keywords: Cucumis melo L, segregant populations, genetic gains, inbred lines extraction, hybrids, selection indexes.Interferência da interação genótipo por ambiente na seleção de linhagens de melão amarelo no agropolo Mossoró-Assu, Brasil RESUMO. Objetivou-se com esse estudo: i) identificar a interferência da interação GxE no processo de seleção de linhagens de melão e; ii) testar a eficiência de índices na seleção de linhagens com maior potencial produtivo e melhor qualidade de fruto. Para isto, avaliaram-se 98 linhagens de melão amarelo e duas testemunhas, Vereda e AF-646, em blocos casualizados com duas repetições, em Mossoró e Baraúna, localizadas no Agropolo produtor desta hortaliça. Avaliaram-se os caracteres produtividade de frutos, massa média de frutos, espessura de polpa, firmeza de polpa e sólidos solúveis. Detectou-se uma predominância da porção complexa na interação GxE em todos os caracteres. A recomendação, neste caso, é promover a seleção em cada ambiente. Alternativamente, a seleção baseada no comportamento médio das linhagens é a estratégia que gera ganhos mais próximos àqueles obtidos pela seleção direta em cada ambiente específico. Os índices de seleção, com o propósito de reduzir a expressão de todos os caracteres, se mostraram melhores para ambas as localidades. Àquele construído para Baraúna permitiu selecionar um maior número de linhagens com elevado potencial produtivo e com melhores qualidades de fruto, sendo assim, mais eficiente. Palavras-chave:Cucumis melo L, populações segregantes, ganho genético, extração de linhagens, híbridos, índices de seleção.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 60%

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<b>Interference of genotype-by-environment interaction in the selection of inbred lines of yellow melon in an agricultural center in Mossoró-Assu, Brazil

et al. 2016

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“…The second alternative has been most used for diverse crops (Ramalho et al 1993). Nevertheless, there are few registers of the effect of interaction on the estimates of variance components obtained in evaluations of segregating populations of melon (Silva et al 2011). Thus, this information is necessary to guide breeders of the crop and allow estimates of more reliable genetic parameters.…”

Section: Fas Aragão Et Almentioning

confidence: 99%

“…Studies on melon have shown the presence of the G x E interaction in experiments for cultivar evaluation , Silva et al 2011). …”

Section: Introductionmentioning

confidence: 99%

Genotype x environment interaction of melon families based on fruit quality traits

Aragão

Nunes

Queiróz

2015

Crop Breed. Appl. Biotechnol.

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Genetic divergence between pumpkin accessions for morphoagronomic characters

et al. 2022

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The objective of this work was to evaluate the diversity between accessions of Cucurbita moschata from the Northeast of Brazil and preserved at the Universidade Federal Rural do Semi-Árido (UFERSA) in Mossoró-RN. The experiment was carried out in complete randomized blocks, with two replications and three plants per plot. The treatments consisted of 51 accessions of C. moschata Duch and a commercial cultivar of Cucurbita maximum Duch. After ripening, the fruits were harvested (one fruit per plant) and evaluated for morpho-agronomic descriptors. Univariate and multivariate variance analyzes were performed. From the dissimilarity matrices, accessions were hierarchically grouped by the UPGMA method. The relative contribution of quantitative characters to the divergence was also estimated. There was an effect of accessions (p <0.01 or p <0.05) for all characters in univariate analyzes, indicating that there is heterogeneity between the accessions evaluated. Considering the quantitative descriptors, the accessions formed eight groups and for the qualitative six groups. When considering the two sets of descriptors, the accessions were distributed in eight groups but presenting a greater distribution of accessions. The descriptors that most contributed to the discrimination of accessions were the firmness of the pulp and the length of the fruit.

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Implicações da interação genótipos x ambientes sobre ganhos com a seleção em meloeiro

Abstract: IImplicações da interação genótipos x ambientes sobre ganhos com a seleção em meloeiro Implications of genotype x environment interaction on the gain with melon selection

Cited by 11 publications

References 6 publications

<b>Interference of genotype-by-environment interaction in the selection of inbred lines of yellow melon in an agricultural center in Mossoró-Assu, Brazil

<b>Interference of genotype-by-environment interaction in the selection of inbred lines of yellow melon in an agricultural center in Mossoró-Assu, Brazil

Genotype x environment interaction of melon families based on fruit quality traits

Genetic divergence between pumpkin accessions for morphoagronomic characters

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