Progresso genético no melhoramento da aveia-branca no Sul do Brasil

Neto, José Fernandes Barbosa; Matiello, Rodrigo Rodrigues; Carvalho, F. I. F. de; Oliveira, João M. S.; Pegoraro, Diego Girardi; Schneider, Fernanda; Sordi, Maria Elena Basilio; Vacaro, Elton

doi:10.1590/s0100-204x2000000800013

Cited by 22 publications

(18 citation statements)

References 4 publications

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“…It is important to study genetic progress in hectoliter weight as it is a measure of grain quality (Lângaro and Carvalho, 2014) and considered a selection criterion in oat breeding programs in southern Brazil (Federizzi et al, 2005). During 1957to 1996, Barbosa Neto et al (2000 reported an annual genetic progress of 0.3% in the hectoliter weight of oat.…”

Section: Resultsmentioning

confidence: 99%

“…If required, this study can suggest possible changes in the strategies and methodologies used in plant breeding programs (Faria et al, 2007). For the oat crop, the studies developed by Barbosa Neto et al (2000) in Brazil and by Redaelli et al (2008) in Italy can be emphasized. In addition, the studies with cereals from the same family as wheat (Nedel, 1994;Rodrigues et al, 2007;Cargnin et al, 2008;Oury et al, 2012;Beche et al, 2014;Thomas and Graf, 2014;Wu et al, 2014), rice (Borges et al, 2009;Breseghello et al, 1999Breseghello et al, , 2011DoVale et al, 2012), and popcorn (Ribeiro et al, 2012) can be highlighted.…”

Section: Introductionmentioning

confidence: 99%

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Genetic progress in oat associated with fungicide use in Rio Grande do Sul, Brazil

et al. 2016

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ABSTRACT. The State of Rio Grande do Sul (RS) is the largest producer of oat in Brazil with the aid of consolidated breeding programs, which are constantly releasing new cultivars. The main objectives of this study were to: 1) evaluate the annual genetic progress in grain yield and hectoliter weight of the oat cultivars in RS, with and without fungicide use on aerial parts of plants; and 2) evaluate the efficiency of oat breeding programs in introducing disease-resistant genes in the released cultivars through network yield trials conducted with and without fungicide use on aerial plant parts. The data on grain yield and hectoliter weight were obtained from 89 competition field trials of oat cultivars carried out from 2007 to 2014 in nine municipalities of RS. Of the total 89 trials, 44 were carried out with fungicide application on aerial plant parts and 45 were carried out without fungicide application. The annual genetic progress in oat cultivars was studied using the methodology proposed by Vencovsky (1988). The annual genetic progress in oat grain yield was 1.02% with fungicide use and 4.02% without fungicide use during the eight-year study period in RS. The annual genetic progress with respect to the hectoliter weight was 0.08% for trials with fungicide use and 0.71% for trials without fungicide use. Performing network yield trials with and without fungicide use on the aerial plants parts is a feasible method to evaluate the efficiency of oat breeding programs in introducing disease-resistant genes in the released cultivars.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic progress in oat associated with fungicide use in Rio Grande do Sul, Brazil

et al. 2016

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“…A aveia branca (Avena sativa L.) constitui uma fonte com potencial econômico de produção de grãos e qualidade nutricional para alimentação humana e animal, sendo considerada de grande importância como cultura de estação fria no Sul do Brasil (BARBOSA NETO et al, 2000). Desta forma, torna-se constante a necessidade para os melhoristas de aveia, disponibilizar permanentemente genótipos superiores com alta produtividade e que demonstrem estabilidade de produção.…”

Section: Introductionunclassified

Estabilidade da produção e da capacidade de combinação de diferentes populações de aveia

et al. 2009

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“…Silva et al (2011) commented about the HI advantage in plant selection process or in the identification of more adjusted managements, indicating the efficiency with which the plant converts BY to straw and grain yield. Barbosa Neto et al (2000), while analyzing the HI of 15 white oat cultivars observed reduced variability in the character and detected a mean value of around 0.37. On the average, regardless of cultivar, sowing density and cultivation system, the HI value was around 0.46.…”

Section: Resultsmentioning

confidence: 97%

Sowing density on oat production physiological parameters

Silva¹,

Mantai²,

Oliveira³

et al. 2015

Científica

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The optimal sowing density is dependent on the genotype and environmental conditions. This study aims at defining the optimal sowing density that maximizes the hay and grains production for the current short-cycle and reduced height biotype of white oat cultivated on a commercial scale, thus justifying the need for using seeds density superior to the recommended. Experiments were conducted in a complete randomized block design with four replications in a 2 x 4 factorial arrangement to cultivate (URS Taura and Brisasul) and sowing density (100, 300, 600 and 900 seeds m -2 ) in the corn/oat and soybean/oat succession system. Regardless of the genotypes tested and cropping system, the current standard biotype of cultivated white oat (short cycle and reduced height) evidence in the physiological characters of production sowing density adjusted around 500 seeds m -2 . The results obtained show that the recommendation proposal of seeds superior to the technical indications of oats in the mean cultivated biotype a part from increment the grains production can bring benefits to qualify the crop management.Additional keywords: Avena sativa L.; biomass; C/N ratio; harvest index; polynomial equation. ResumoA densidade ideal de semeadura é dependente do genótipo e das condições ambientais. O objetivo do estudo busca definir a densidade ideal de semeadura que maximize a produção de palha e de grãos para o atual biotipo de ciclo curto e estatura reduzida de aveia-branca cultivada em escala comercial. Portanto, justifica-se a necessidade de emprego de uma densidade de sementes superior à recomendação. Foram conduzidos experimentos em delineamento de blocos ao acaso, com quatro repetições, num esquema fatorial 2 x 4, para cultivar (URS Taura e Brisasul) e densidade de semeadura (100; 300; 600 e 900 sementes viáveis m -2 ) no sistema de sucessão milho/aveia e soja/aveia. Independentemente dos genótipos testados e do sistema de cultivo, o atual biotipo padrão de aveia-branca cultivada (ciclo curto e estatura reduzida) evidencia, nos caracteres fisiológicos de produção, a densidade de semeadura ajustada ao redor de 500 sementes m -2 . Os resultados obtidos mostram que a proposta de recomendação de sementes superior às indicações técnicas da aveia no principal biotipo cultivado, afora incrementar a produção de grãos, pode trazer benefícios em qualificar o manejo da lavoura.Palavras-chave adicionais: Avena sativa L.; biomassa; equação polinomial; índice de colheita; relação C/N.

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Progresso genético no melhoramento da aveia-branca no Sul do Brasil

Cited by 22 publications

References 4 publications

Genetic progress in oat associated with fungicide use in Rio Grande do Sul, Brazil

Genetic progress in oat associated with fungicide use in Rio Grande do Sul, Brazil

Estabilidade da produção e da capacidade de combinação de diferentes populações de aveia

Sowing density on oat production physiological parameters

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