scholarly journals Long-term selection experiment with Afrikaner cattle 2. Genetic parameters and genotype x environment interaction for calf growth traits

2009 ◽  
Vol 39 (2) ◽  
Author(s):  
JB Van Wyk ◽  
LM Beffa ◽  
GJ Erasmus
Keyword(s):  
Genetic Parameters ◽  
Growth Traits ◽  
Genotype X Environment Interaction ◽  
Environment Interaction ◽  
Selection Experiment ◽  
Calf Growth ◽  
Genotype X Environment ◽  
Term Selection

scholarly journals GENETIC PARAMETERS OF Eucalyptus spp. CLONES IN NORTHEASTERN BRAZIL

FLORESTA ◽  
2020 ◽  
Vol 50 (2) ◽  
pp. 1267 ◽  
Author(s):  
Rodrigo Andrade Furlan ◽  
Evandro Vagner Tambarussi ◽  
Cristiano Bueno Moraes
Keyword(s):  
Drought Tolerance ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Block Design ◽  
Northeastern Brazil ◽  
Soil Conditions ◽  
Environment Interaction ◽  
Mato Grosso ◽  
Genotype X Environment ◽  
Randomized Complete Block Design

Brazil is the largest charcoal producers in the world, with the main centers of charcoal consumption located in the states of Minas Gerais, Mato Grosso do Sul, Espírito Santo, Maranhão, and Pará. Planting of Eucalyptus in the northern and northeastern states of Brazil is relatively new and is limited the lack of genetic materials adapted to the region’s high temperatures and severe, prolonged periods of drought. The objective of this study was to assess the genetic parameters and variability and determine the genotype x environment interaction for drought tolerance in Eucalyptus clonal tests established in two environments in the municipality of Grajaú, Maranhão State, Brazil. The tests were planted in January 2011 in clayey and sandy soils in a randomized complete block design with 130 clones, one plant per plot, and 20 replicates. The studied clones showed high genetic variability for drought tolerance, with coefficients of relative variance () consistently greater than 0.8 for DBH and volume. This indicates high levels of genetic control and less influence of environmental factors on the phenotype, which allows for selection and obtaining gains through breeding. Heritability estimates were high for growth traits, with average clone heritabilities () greater than 0.85, as well as acuracies () above 0.9 for DBH and volume in clone selection. There was a simple interaction between genotype x environment for the clones under the two different soil conditions.

scholarly journals Genetic parameters and genotype x environment interaction for productivity, oil and protein content in soybean

2013 ◽  
Vol 8 (38) ◽  
pp. 4853-4859 ◽  
Author(s):  
Rafael Delmond Bueno ◽  
◽  
Leandro Luiz Borges ◽  
Klever Márcio Antunes Arruda ◽  
Leonardo Lopes Bhering ◽  
...  
Keyword(s):  
Protein Content ◽  
Genetic Parameters ◽  
Genotype X Environment Interaction ◽  
Environment Interaction ◽  
Genotype X Environment

scholarly journals Genotype X Environment Interaction of Food Barley

2015 ◽  
Vol 21 ◽  
pp. 41-48
Author(s):  
Gebremedhin Welu
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Genotype X Environment Interaction ◽  
Environment Interaction ◽  
Genotype X Environment ◽  
Genotype Effect ◽  
Environment Effects ◽  
Randomized Complete Block Design ◽  
Barley Genotypes

The objective of this experiment was to estimate the magnitude of genotype X environment interaction on grain yield and yield related traits. Twelve varieties of food barley were included in the study planted in randomized complete block design with three replications. The ANOVA of combined and individual location revealed significant differences among the food barley genotypes for grain yield and other traits. The results of ANOVA for grain yield showed highly significant (p≤0.01) differences among genotypes evaluated for grain yield at Maychew and significant (p≤0.05) differences in Korem, Alage and Mugulat. The ANOVA over locations showed a highly significant (p≤0.01) variation for the genotype effect, environment effects, genotype X environment interaction (GEI) effect and significant (p≤0.05) variation for GEI effect of yield and for most of the yield related traits of food barley genotypes. Haftysene, Yidogit, Estayish and Basso were the genotypes with relatively high mean grain yield across all locations and they are highly performing genotypes to the area. Among locations, the highest mean grain yield was recorded at Korem and it was a suited environment to all the genotypes whereas Mugulat is unfavoured one. ECOPRINT 21: 41-48, 2014DOI: http://dx.doi.org/10.3126/eco.v21i0.11903

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