Genetic control of resistance to gray leaf spot of maize in tropical germplasm

Brito, André Humberto de; Davide, Livia Maria Chamma; Pinho, Renzo Garcia Von; Carvalho, Rafael Pelloso de; Reis, Matheus Costa dos

doi:10.1590/s1984-70332012000200008

Cited by 4 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ramalho et al (2012) affirm that modifiers are smaller effect genes, able to alter the expression of other genes with greater effect. This hypothesis of the occurrence of major effect genes is confirmed by various studies with inbred lines from multiple sources that indicate that resistance is qualitatively inherited (locus with major effect) and quantitatively inherited, whereas the additive effect of genes is more important than the non-additive (Ward et al 1999, Welz and Geiger 2000, Juliatti et al 2009, Vivek et al 2010, Brito et al 2012, Vieira et al 2012, Abera et al 2016. Modifiers with major effect have not yet been detected in this group of inbred lines.…”

Section: Resultsmentioning

confidence: 54%

Adaptability and stability of corn inbred lines regarding resistance to gray leaf spot and northern leaf blight

Saito

Silva

Andrade

et al. 2018

Crop Breed. Appl. Biotechnol.

View full text Add to dashboard Cite

The objectives of this study were to identify resistant and susceptible corn inbred lines based on their stability and adaptability for resistance to disease symptoms of gray leaf spot and northern leaf blight, suggest resistant inbred lines aimed at producing synthetics, and identify the sowing dates with higher occurrence of diseases to use these dates for identification of genetic resistance. We evaluated 41 corn inbred lines in randomized block designs with three replications and 11 sowing dates. Evaluations were performed 30 days after silking. Stability and adaptability analyses were performed by the regression method. The highest severities of disease occurred in sowing from June to September. On average, all the inbred lines were classified as resistant; however, considering adaptability and stability, five inbred lines were found suitable to produce dent synthetics resistant to both diseases. For flint synthetics resistant to both diseases, inbred lines IVF1-7, IVF1-10, 2F, 9F, and 10F are most suitable.

show abstract

Section: Resultsmentioning

confidence: 54%

Adaptability and stability of corn inbred lines regarding resistance to gray leaf spot and northern leaf blight

Saito

Silva

Andrade

et al. 2018

Crop Breed. Appl. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…Different studies have demonstrated the existence of genetic variability regarding resistance to white leaf spot, being the additive gene action more important than non-additive effects (GUIMARÃES et al, 2009;VIVEK et al, 2010;NIHEI;FERREIRA, 2012). The additive gene action has also been predominant in most studies of inheritance of resistance to gray leaf spot (DERERA et al, 2008;VIEIRA et al, 2009b;BRITO et al, 2012;BALESTRE et al, 2012) and southern rust (VIVEK et al, 2010;VIEIRA et al, 2011). However, the resistance for northern leaf blight can be controlled by the action of additive and nonadditive effects (OGLIARI et al, 2007;VIEIRA et al, 2009a).…”

Section: Introductionmentioning

confidence: 99%

Identification and characterization of maize lines resistant to leaf diseases

Kaefer

Schuelter

Schuster³

et al. 2019

SCA

View full text Add to dashboard Cite

Among the maize leaf diseases, white leaf spot, northern leaf blight, gray leaf spot, and southern rust are recognized not only by the potential for grain yield reduction but also by the widespread occurrence in the producing regions of Brazil and the world. The aim of this study was to characterize common maize lines for resistance to white leaf spot, northern leaf blight, gray leaf spot, and southern rust and suggest crosses based on the genetic diversity detected in SNP markers. The experiment was conducted in a randomized block design with three replications in order to characterize 72 maize lines. Genotypic values were predicted using the REML/BLUP procedure. These 72 lines were genotyped with SNP markers using the 650K platform (Affymetrix®) for the assessment of the genetic diversity. Genetic diversity was quantified using the Tocher and UPGMA methods. The existence of genetic variability for disease resistance was detected among maize lines, which made possible to classify them into three large groups (I, II, and III). The maize lines CD 49 and CD50 showed a good performance and can be considered sources of resistance to diseases. Therefore, their use as gene donors in maize breeding programs is recommended. Considering the information of genetic distance together with high heritability for leaf diseases, backcrossing of parent genotypes with different resistance levels, such as those of the lines CD49 x CD69 and CD50 x CD16, may result in new gene combinations, as they are divergent and meet good performances.

show abstract

“…são responsáveis por reduções significativas no rendimento da cultura (SILVA; SCHIPANSKI, 2007;BRITO et al, 2012). O impacto dessas doenças na cultura se deve ao fato dos patógenos colonizarem grande parte do tecido foliar, diminuindo a área fotossintetizante, levando à senescência precoce e, consequentemente, à redução da produtividade de grãos (REIS; CASA; BRESOLIN, 2004).…”

Section: Introductionunclassified

Análise dialélica da produtividade e do progresso da severidade de doenças foliares em híbridos de milho em duas densidades populacionais

et al. 2015

View full text Add to dashboard Cite

ResumoSete híbridos comerciais de milho (AS1575, 2B688, Penta, GNZ2004, AG8021, Sprint e P30F53) foram utilizados como genitores de um dialelo completo, sem os recíprocos, gerando 21 cruzamentos. Os 28 tratamentos foram avaliados em duas densidades populacionais (62.500 e 90.000 plantas ha -1 ), com o objetivo de selecionar os genitores mais promissores para a geração de populações-base para a obtenção de linhagens. Dois experimentos contíguos foram conduzidos em Guarapuava-PR, no delineamento em blocos ao acaso com três repetições. Foi estimada a capacidade geral (CGC) e específica (CEC) de combinação para produtividade de grãos e severidade de doenças avaliadas pela área abaixo da curva de progresso da ferrugem comum (Puccinia sorghi) (AACPF) e da cercosporiose (Cercospora zeae-maydis) (AACPC). Os efeitos da CGC e CEC foram significativos para a produtividade de grãos e severidade das doenças em ambas as densidades de semeadura, revelando a importância tanto dos efeitos aditivos quanto não aditivos. Houve interação CGC x densidades de semeadura significativa somente para produtividade de grãos. Os cruzamentos P30F53 x AG8021 e P30F53 x Penta apresentaram CEC negativa para AACPF e AACPC na média dos experimentos. Os híbridos GNZ 2004 e P30F53 destacaram-se apresentando CGC positiva para produtividade de grãos e negativa para a AACPF e AACPC em ambos os experimentos, portanto são recomendados para a geração de populações-base para a obtenção de linhagens adaptadas tanto a densidades populacionais convencionais, quanto a plantios mais adensados, atendendo às atuais tendências de manejo da cultura do milho. Palavras-chave: Capacidade de combinação, Cercospora zeae-maydis, Puccinia sorghi, Zea mays AbstractSeven commercial maize hybrids (AS1575, 2B688, Penta, GNZ2004, AG8021, Sprint e P30F53) were intercrossed in a complete diallel, excluded reciprocal, obtaining 21 crosses. The 28 treatments were evaluated in two environments characterized by different densities (62,500 and 90,000 plants ha -1 ), with 1 Eng os Agr os , Profs. Drs.,

show abstract

Genetic control of resistance to gray leaf spot of maize in tropical germplasm

Abstract: Abstract

Cited by 4 publications

References 19 publications

Adaptability and stability of corn inbred lines regarding resistance to gray leaf spot and northern leaf blight

Adaptability and stability of corn inbred lines regarding resistance to gray leaf spot and northern leaf blight

Identification and characterization of maize lines resistant to leaf diseases

Análise dialélica da produtividade e do progresso da severidade de doenças foliares em híbridos de milho em duas densidades populacionais

Contact Info

Product

Resources

About