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Genetic control of aluminum tolerance in tropical maize germplasm Bragantia
Coelho,Caroline de Jesus; Bombardelli,Renato Gustavo Hoffmann; Schulze,Guilherme Stalchmidt; Caires,Eduardo Fávero; Matiello,Rodrigo Rodrigues.
ABSTRACT Aluminum (Al) toxicity is the most limiting factor to maize crop productivity in acid soils. Therefore, the understanding of inheritance of Al tolerance in maize is important for the developmentof more adequate procedures for Al tolerant genotypes selection. In this sense, the objectives of this study were to determine the inheritance, and the general (GCA) and specific combining ability (SCA) for Al tolerance in tropical maize. First, we evaluated diallel crosses of maize from landrace and hybrid germplasms for Al tolerance through the minimal solution methodology. The DIF data (root growth difference) were analyzed by Griffing diallel model. Later the additive-dominant genetic model proposed by Mather and Jinks (1971) was used to estimate the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Combining ability; Heritability; Inheritance; Zea mays L..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100071
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Genetic dissimilarity and definition of recombination clusters among green corn half-sib progenies Bragantia
Silva,Danilo Fernando Guimarães; Coelho,Caroline de Jesus; Romanek,Cristiane; Gardingo,José Raulindo; Silva,Anderson Rodrigo da; Graczyki,Brenda Luiza; Oliveira,Eduardo Augusto Teixeira; Matiello,Rodrigo Rodrigues.
ABSTRACT The present study aimed to estimate the genetic divergence among corn half-sib progenies seeking to direct recombination between contrasting and superior progenies for green corn production. Ninety-six progenies were evaluated in a randomized block design with 3 replications, and 18 characteristics associated with agronomic adaptation and green corn yield were measured. The genetic divergence was estimated using generalized square Mahalanobis distance and the progenies grouped by UPGMA and Tocher’s methods. The joint analysis of variance showed genetic variability among the progenies for the characteristics evaluated. The UPGMA method was more sensitive than Tocher’s, since it led to the formation of 11 groups genetically dissimilar compared to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays L.; Ears yield; Potential; UPGMA; Tocher.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000400401
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