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Articles by Carlos Antonio da Silva Junior
Total Records ( 1 ) for Carlos Antonio da Silva Junior
  Carlos Antonio da Silva Junior , Paulo Eduardo Teodoro , Guilherme Fernando Capristo Silva , Larissa Pereira Ribeiro , Flavia Alves da Silva , Caio Cezar Guedes Correa , Roque Apolinario Alves da Luz Junior and Francisco Eduardo Torres
  Determining the genetic variability and correlations between traits of interest for selection in a population is one of the stages in a breeding program. The objectives of this study was to evaluate the potential for genetic improvement of a population composed of twelve commercial soybean genotypes, were estimated genetic and phenotypic descriptors and correlations between morphological traits of the population. The experimental design was used in randomized block design with four replications. The descriptors measured were plant height and first pod insertion, number of pods and ramifications, mass of hundred grains and yield grains. The yield grains presented more genotypic coefficient of variation, ratio b and herdability. This descriptor obtained phenotypic correlations significant positive (p<0.01), with number of pods, ramifications and mass hundred grains, indicating that the selection of plants with larger number of ramifications entailed, therefore, more productive genotypes. The genotype correlations had the same sign and in most cases superior to their corresponding phenotypic correlations values, indicating that the phenotypic expression is decreased compared to environmental influences. Environmental correlations between descriptors with differences in magnitude and sign, in relation to the respective genotype correlations, revealed that the environment favored one character over another and that the genetic and environmental causes of variation have different physiological mechanisms, defaulting the indirect selection.
 
 
 
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