Expressão da resistência parcial à ferrugem da folha da aveia presente na linhagem MN841801, no ambiente do Sul do Brasil

Martinelli, José Antônio; Chaves, Márcia Soares; Federizzi, Luiz Carlos; Savi, Valda

doi:10.1590/s0103-84782009005000097

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…Leaf rust, being the most destructive disease of oat (Chaves and Martinelli, 2005), reduces the quality and yield of grains by approximately 50%. According to Martinelli et al (2009), the effectiveness of the pathogen-resistance genes in oat is low and the virulence of the races found in southern Brazil is complex. This scenario justifies the efforts in performing trials with and without the use of foliar fungicide in oat.…”

Section: Resultsmentioning

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%

“…However, leaf diseases, such as leaf rust, have been recognized as potentially aggressive diseases (Chaves and Martinelli, 2005), which reduce the yield and quality of oat grains (Martinelli et al, 2009). Dividing the cultivar trials with and without fungicide use is relevant.…”

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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“…This allows an improved efficiency IC Nava et al in the selection of well-adapted genotypes with high yield potential. Several studies investigated the genetic control of important oat traits, such as partial leaf rust resistance (Martinelli et al 2009), photoperiod sensitivity and flowering (Locatelli et al 2008), tolerance to aluminum toxicity (Oliveira et al 2005, Nava et al 2006, morphology of primary grain (Cabral et al 2001), plant height (Mariot et al 1999), and panicle type (Bertagnolli and Federizzi 1994).…”

Section: Introductionmentioning

confidence: 99%

Genetic control of agronomic traits in an oat population of recombinant lines

Nava

Duarte

Pacheco

et al. 2010

Crop Breed. Appl. Biotechnol.

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“…Another disease observed among leaves, in terms of incidence and severity, is spot blotch (Cochliobolus sativus). In good years, such diseases may cause a decrease in forage production and losses exceeding 50% in grain yield (Martinelli et al, 2009), thereby increasing the magnitude of the interaction between genotypes and the environment.…”

Section: Introductionmentioning

confidence: 99%

Foliar fungicide and environments on the physiological quality of oat seeds

et al. 2014

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-The oat crop is of great economic importance and seed production depends on several factors (biotic and abiotic) that can alter its quality. Thus, the study aimed to evaluate the physiological quality of oat seeds produced with and without application of foliar fungicide in contrasting environments. The experimental design was a randomized block design in a factorial 6x2 (cultivar x fungicide) for each site, with four replications. The physiological quality of seeds was evaluated by grain yield, germination, first count, accelerated aging, moisture content after accelerated aging, seedling length, seedling dry weight, electrical conductivity and seedling emergence in field. Data were subjected to joint and individual analysis of variance, and means were compared by Tukey's test at 5%. Grain yield in Mauá da Serra is superior to Londrina, Parana State -Brazil, but the seed quality is lower, although all cultivars have shown germination above 90% in the two cultivation sites. Cultivars FAEM 6 DILMASUL and UPFA OURO showed no disease, indicating possible resistance. The application of the product has a beneficial effect on seed germination and vigor, even in the absence of disease.Index terms: Avena sativa L., cultivars, germination, vigor.Fungicida foliar e ambientes de cultivo na qualidade fisiológica de sementes de aveia branca granífera RESUMO -A aveia branca é uma cultura de grande importância econômica e a produção de sementes depende de diversos fatores (bióticos e abióticos) que podem alterar sua qualidade. Dessa forma, o trabalho teve por objetivo avaliar a qualidade fisiológica de sementes de aveia branca produzidas com e sem aplicação de fungicida foliar em ambientes contrastantes. O delineamento experimental foi em blocos casualizados, em esquema fatorial 6x2 (cultivares x fungicida), para cada local, com quatro repetições. A qualidade fisiológica das sementes foi avaliada pelos testes de rendimento de grãos, teor de água, germinação, primeira contagem de germinação, envelhecimento acelerado, teor de água após o envelhecimento acelerado, comprimento de plântulas, massa de matéria seca de plântulas, condutividade elétrica e emergência de plântulas em escala de campo. Os dados foram submetidos à análise de variância individual e conjunta, as médias comparadas pelo teste de Tukey a 5%. O rendimento de grãos em Mauá da Serra é superior a Londrina, estado do Paraná, Brasil, porém a qualidade fisiológica da semente é inferior, embora todas as cultivares tenham apresentado porcentagem de germinação superior a 90% nos dois locais de cultivo. As cultivares FAEM 6 DILMASUL e a UPFA OURO não apresentaram doença, indicando possível resistência. Há efeito benéfico da aplicação do produto na germinação e vigor, mesmo na ausência da doença.Termos para indexação: Avena sativa L., cultivares, germinação, vigor 1

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Expressão da resistência parcial à ferrugem da folha da aveia presente na linhagem MN841801, no ambiente do Sul do Brasil

Abstract: IVExpressão da resistência parcial à ferrugem da folha da aveia presente na linhagem MN841801, no ambiente do Sul do Brasil

Cited by 5 publications

References 18 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

Genetic control of agronomic traits in an oat population of recombinant lines

Foliar fungicide and environments on the physiological quality of oat seeds

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