An updated doubled haploid oat linkage map and QTL mapping of agronomic and grain quality traits from Canadian field trials

Tanhuanpää, Pirjo; Manninen, Outi; Beattie, Aaron D.; Eckstein, P. E.; Scoles, G. J.; Rossnagel, B. G.; Kiviharju, Elina

doi:10.1139/g2012-017

Cited by 30 publications

(34 citation statements)

References 22 publications

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“…Previous studies using bi-parental populations identified QTLs for lodging in Mrg01, Mrg05 and Mrg21. In particular, three loci have been detected in Mrg21 around 190 cM, in the range 150-180 cM (De Koeyer et al 2004) and around 130 cM (Tanhuanpää et al 2012), where we also detected two associations (Table 1). Interestingly, associations to hullessness have also been found around 178 cM (Tumino et al 2016) and194 cM (De Koeyer et al 2004).…”

Section: Lodging Tolerance and Plant Heightsupporting

confidence: 67%

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Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Tumino

Voorrips

Morcia³

et al. 2017

Euphytica

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Sensitivity to lodging of oat varieties has been reduced in the last decades through the introduction of dwarfing genes. However, lodging may still cause significant yield loss, underscoring the need for new oat varieties with higher levels of lodging tolerance. In the present study, we analysed lodging and plant height in a collection of European oat accessions including landraces, old and modern varieties, in order to perform a genome-wide association study (GWAS) for identifying markers associated to lodging tolerance. This collection has been recently genotyped by the Infinium 6K SNP array for oat and SNP data were analysed as continuous intensity ratios, rather than as discrete genotypes (Tumino et al. 2016, Theor Appl Genet 129, pp. 1711-1724). Phenotypes for lodging severity, plant height and growth habit were collected under natural conditions in eight European countries. Plant height correlated to lodging severity as previously observed in many studies, explaining about 30% of lodging variation. GWAS analyses detected six significant associations for lodging and two for plant height. These results indicate that GWAS can successfully be used for identifying markers associated to lodging in oat, even though lodging is a quantitative trait influenced by several plant characteristics.

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Section: Lodging Tolerance and Plant Heightsupporting

confidence: 67%

“…In oat many QTLs for plant height have been identified in several studies by using bi-parental populations (Siripoonwiwat et al 1996;Holland et al 1997;De Koeyer et al 2004;Wooten et al 2009), but only few QTL analyses have addressed oat lodging (De Koeyer et al 2004;Tanhuanpää et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Tumino

Voorrips

Morcia³

et al. 2017

Euphytica

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“…Moreover, the presence of pleiotropic effects in LIP synthesis was suggested (Hizbai et al, 2012). At the same time, QTLs (Quantitative Trait Loci) have been detected for the LIP content in oats (Tanhuanpää et al, 2010;Tanhuanpää et al, 2012).…”

Section: Resultsmentioning

confidence: 96%

“…F 2 generations with higher LIP and lower PROT contents (Population 1), high PROT and low LIP contents (Population 2) were observed. In fact, QTLs affecting simultaneously PROT and LIP contents have been described in oats (Tanhuanpää et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Heterosis and genetic parameters for grain quality in oat segregating populations

Silveira

Hawerroth

Oliveira

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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Improvement of quality-related traits of grains is a constant concern in white oat breeding programs, which challenges breeders to understand their dynamics. The performance of different genetic combinations must be thoroughly evaluated to make high nutritional quality cultivars available. This study aimed to estimate the heterosis on F 1 and F 2 generations, vigor loss, due to inbreeding, and correlation between the grain chemical components to understand the dynamics of these traits, considering two segregating oat progenies. The populations Albasul × UPF 15 (population 1) and IAC 7 × UFRGS 19 (population 2) were developed. Both populations showed transgressive segregant individuals. The combination Albasul × UPF 15 provided significant heterosis for traits β-glucan total and soluble fiber contents, while the population obtained by crossing IAC 7 × UFRGS 19 generated significant gain by heterosis for total fiber, insoluble fibers and non-structural carbohydrate contents. Considering the F 2 average for each population, one can observe that population 1 presents higher β-glucan and lipid contents than population 2. On the other hand, population 2 has higher protein content than population 1. In both populations, the non-structural carbohydrate content is strongly and negatively correlated whith protein, total and insoluble fibers. Correlations between total fibers and lipids and between total fibers and insoluble fibers were both positive and high in both populations.

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“…A altura média de planta foi de 87,9 cm, o acamamento de 16,1% das plantas e a produtividade de grãos de 3.498,9 kg ha -1 . Tanto a sensibilidade ao acamamento quanto a produtividade de grãos evidenciam herança complexa, ou seja, são governados por um grande número de genes de pequeno efeito e, portanto, são caracteres fortemente afetados pelas condições ambientais (Tanhuanpää et al, 2012;Kong et al, 2013), o que justifica a variação e as magnitudes dos coeficientes de variação observados nas diferentes condições de cultivo avaliadas no presente trabalho.…”

Section: Resultsunclassified

Redução do acamamento em aveia-branca com uso do regulador de crescimento etil-trinexapac

Hawerroth

Silva

Souza

et al. 2015

Pesq. agropec. bras.

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O objetivo deste trabalho foi avaliar os efeitos da aplicação de concentrações do regulador de crescimento etil-trinexapac na altura de planta, no acamamento e na produtividade de grãos da cultivar de aveia-branca Barbarasul, em diferentes ambientes de cultivo e doses de nitrogênio. Os experimentos foram conduzidos nas safras 2010 e 2011 nos municípios de Capão do Leão e Augusto Pestana, no Estado do Rio Grande do Sul, e nas safras 2010 e 2012 no Município de Lages, no Estado de Santa Catarina. Utilizou-se o delineamento de blocos ao acaso, em arranjo fatorial 4x2x6 (dose de etil-trinexapac, estádio de desenvolvimento da planta e ambiente), com quatro repetições constituídas por parcelas úteis de 3,0 m2. Em cada ambiente, realizou-se adubação nitrogenada com 30 e 90 kg ha-1 de N. Foram avaliados os caracteres altura de planta, percentagem de acamamento e produtividade de grãos. A aplicação do regulador de crescimento etil-trinexapac nas doses de 100 a 150 g i.a. ha-1 em plantas de aveia-branca 'Barbarasul', nos estádios E31 e E32, reduz a altura das plantas e a percentagem de acamamento, sem prejuízos à produtividade de grãos. A intensidade da redução do acamamento depende das características do ambiente de cultivo.

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An updated doubled haploid oat linkage map and QTL mapping of agronomic and grain quality traits from Canadian field trials

Cited by 30 publications

References 22 publications

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Heterosis and genetic parameters for grain quality in oat segregating populations

Redução do acamamento em aveia-branca com uso do regulador de crescimento etil-trinexapac

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