Genetic and environmental contributions to increased wheat yield in Minas Gerais, Brazil

Cargnin, Adeliano; Souza, Moacil Alves de; Fronza, V.; Fogaça, Cláudia Martellet

doi:10.1590/s0103-90162009000300006

Cited by 11 publications

(16 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…No Sul do Brasil, Nedel (1994) (Cargnin et al, 2008) e 37 kg ha -1 por ano de trigo de sequeiro (Cargnin et al, 2009).…”

Section: Introductionunclassified

“…Assim, a busca de metodologias mais eficientes de seleção é a alternativa de efeito mais rápido, sobretudo quanto à produção de grãos, para a qual a variabilidade genética ainda está longe de ser exaurida (Cargnin et al, 2008(Cargnin et al, , 2009. O uso de procedimentos genético-estatísticos mais refinados, como a metodologia de modelos mistos, é uma tendência no melhoramento genético de plantas.…”

Section: Introductionunclassified

See 1 more Smart Citation

Estimação de parâmetros genéticos e predição de valor genético aditivo de trigo utilizando modelos mistos

Pimentel

Guimarães

Souza

et al. 2014

Pesq. agropec. bras.

Self Cite

View full text Add to dashboard Cite

Resumo -O objetivo deste trabalho foi estimar os parâmetros genéticos e predizer o valor genético de populações e indivíduos oriundos de populações segregantes de trigo, com o uso da metodologia de modelos mistos ("restricted maximum likelihood"/"best linear unbiased prediction", REML/BLUP). Trinta e seis populações segregantes de trigo e quatro controles foram avaliados na geração F 3 , em delineamento de blocos ao acaso, com informações de indivíduo retiradas de dentro das parcelas. Os caracteres avaliados foram: produção de grãos, índice de colheita, número de perfilhos e altura de planta. Observou-se a existência de variabilidade genética entre populações em todos os caracteres avaliados. A herdabilidade média variou de 39,15 a 92,78%, e a acurácia, de 62,57 a 96,32%, na seleção de populações. A herdabilidade individual no sentido restrito foi baixa dentro das populações, em todos os caracteres. A acurácia na seleção individual apresentou magnitude média, quanto ao caráter altura de plantas, e baixa quanto aos demais caracteres. A herdabilidade individual contribui para maior ganho nos caracteres altura de planta e índice de colheita com o uso do BLUP individual, em comparação ao BLUP de populações. As populações segregantes Embrapa22/BRS207, Embrapa22/ VI98053, Embrapa22/IVI01041, BRS254/BRS207, BRS254/VI98053, BRS254/UFVT1Pioneiro e BRS264/ BRS207 destacam-se por apresentar valor genético aditivo elevado em dois ou mais caracteres.Termos para indexação: Triticum aestivum, análise de deviance, dados desbalanceados, estratégias de melhoramento, população segregante, REML/BLUP. Estimation of genetic parameters and prediction of additive genetic value for wheat by mixed modelsAbstract -The objective of this work was to estimate the genetic parameters and to predict the genotypic value of populations and individuals from wheat segregating populations, using the methodology of mixed models (restricted maximum likelihood/best linear unbiased prediction, REML/BLUP). Thirty-six wheat segregating populations and four controls were evaluated in the F 3 generation, in a randomized complete block design, with individual information taken from within the plots. The evaluated traits were: grain yield, harvest index, number of tillers, and plant height. Genetic variability between populations was observed for all evaluated traits. The mean heritability varied from 39.15 to 92.78%, and accuracy varied from 62.57 to 96.32% in the selection of populations. The narrow-sense individual heritability was low within populations for all traits. The accuracy for individual selection had a moderate value for plant height, and low values for the other traits. Individual heritability contributes to a greater gain for the traits plant height and harvest index with the use of individual BLUP, in comparison to population BLUP. The segregating populations Embrapa22/BRS207, Embrapa22/VI98053, Embrapa22/IVI01041, BRS254/BRS207, BRS254/VI98053, BRS254/UFVT1Pioneiro, and BRS264/BRS207 stand out with high additive genetic value, for two or mor...

show abstract

“…No Sul do Brasil, Nedel (1994) (Cargnin et al, 2008) e 37 kg ha -1 por ano de trigo de sequeiro (Cargnin et al, 2009).…”

Section: Introductionunclassified

Estimação de parâmetros genéticos e predição de valor genético aditivo de trigo utilizando modelos mistos

Pimentel

Guimarães

Souza

et al. 2014

Pesq. agropec. bras.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The annual rate of lines renovation was 52% and reflect the breeding program dynamism in the search process for higher bread-making quality genotypes. For grain yield, other researchers reported lower renovation rates (Cargnin et al, 2008;2009). The genotypes maintenance rate was 31.6%, indicating that almost onethird of the genotypes was maintained under evaluation in more than 1 yr.…”

Section: Resultsmentioning

confidence: 92%

“…The use of contrast between means in order to estimate the gain in key traits from multi-environment trial data is common in scientific research (Storck et al, 2005;Cargnin et al, 2009;Brisson et al, 2010;Oury et al, 2012). It is a flexible method (Soares et al, 1994) and can be used for data without replicate, which is common in the measurement of baking quality traits in wheat breeding programs.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Environmental effect on genetic gains and its impact on bread-making quality traits in Brazilian spring wheat

Bornhofen

Benin

Storck

et al. 2017

Chilean J. Agric. Res.

View full text Add to dashboard Cite

In wheat (Triticum aestivum L.) several studies have reported genetic gain for grain yield over the years. However, studies on wheat bread-making quality are scarce. Our objective was to estimate the progress due to genetic and environmental components in wheat breadmaking quality parameters. In addition, we aimed to examine trends in historical cultivars and associate traits performance with geographical parameters. We used data from multi-environment trials (MET) represented by eight years (2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012) and 458 genotypes, including lines and commercial cultivars (controls). We determined the genetic progress by the contrasts between genotypes assessed in each biennium, excluding the year effect. This effect is previously estimated by existing variation among common genotypes. Genotype replacement rate was 52% and reflects the dynamism of the breeding program to develop better genotypes in terms of bread-making quality. The genetic progress estimated for gluten strength (W) was 1.30% yr -1 . The progress in W demonstrated to be partly counterbalanced by the environmental effect (-0.78% yr -1 ). We observed disequilibrium tendency in relationship between tenacity and extensibility (P/L ratio) as a consequence of searching for lines with high W. Analysis showed that P/L ratio can be reduced in responses to the increase in latitude of the location. Environmental and genetic effects on the traits variation were discussed.

show abstract

Genetic gains in wheat in Turkey: Winter wheat for dryland conditions

Gummadov

Keser²,

Akın

et al. 2017

The Crop Journal

View full text Add to dashboard Cite

Genetic and environmental contributions to increased wheat yield in Minas Gerais, Brazil

Cited by 11 publications

References 7 publications

Estimação de parâmetros genéticos e predição de valor genético aditivo de trigo utilizando modelos mistos

Estimação de parâmetros genéticos e predição de valor genético aditivo de trigo utilizando modelos mistos

Environmental effect on genetic gains and its impact on bread-making quality traits in Brazilian spring wheat

Genetic gains in wheat in Turkey: Winter wheat for dryland conditions

Contact Info

Product

Resources

About