Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons
Resistance of maize inbred lines to major leaf diseases should be characterized for the development of new hybrids in breeding programs. Thus, this study aimed to assess the severity of leaf diseases in maize inbredlines with different kernel hardnessand two sowingseasons. We assessed four inbred li...
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Universidade Estadual de Londrina
2018-02-01
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Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/28603 |
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doaj-0ecb00108a1447f48766676d88be1c622020-11-25T00:08:45ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592018-02-01391293810.5433/1679-0359.2018v39n1p2916859Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasonsCecília Aparecida Spada0Marcos Ventura Faria1Marcelo Cruz Mendes2Welton Luiz Zaluski3Emanuel Gava4Carlos Augusto da Silva5Diego Fernando de Marck6Cacilda Márcia Duarte Rios Faria7Universidade Estadual do Centro OesteUniversidade Estadual do Centro OesteUniversidade Estadual do Centro OesteUniversidade Estadual do Centro OesteUniversidade Estadual do Centro OesteGeneze SementesUniversidade Estadual do Centro OesteUniversidade Estadual do Centro OesteResistance of maize inbred lines to major leaf diseases should be characterized for the development of new hybrids in breeding programs. Thus, this study aimed to assess the severity of leaf diseases in maize inbredlines with different kernel hardnessand two sowingseasons. We assessed four inbred lines and one check hybrid with dent kernels and four inbred lines and a check hybrid with flint kernels. Treatments were conducted in two sowing seasons, one in October, and another in December 2013. The symptoms of gray leaf spot (Cercospora zeae-maydis), northern leaf blight (Exserohilum turcicum), and white leaf spot (a complex of Phaeosphaeria maydis and Pantoea ananatis) were assessed every 10 days from flowering. The area under the disease progress curve was also calculated. Severity level of the diseases was higher in inbred lines when compared to the check hybrds (AG8041 PRO and P30R50YH), regardless of kernel hardness. Dent-kernel inbred lines showed a higher severity of northern leaf blight symptoms when compared to flint-kernelones. It is worth mentioning that disease severity increased as sowing was delayed.http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/28603Cercospora zeae-maydisExserohilumturcicumPantoea ananatisPhaeosphaeria maydisZea mays. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cecília Aparecida Spada Marcos Ventura Faria Marcelo Cruz Mendes Welton Luiz Zaluski Emanuel Gava Carlos Augusto da Silva Diego Fernando de Marck Cacilda Márcia Duarte Rios Faria |
spellingShingle |
Cecília Aparecida Spada Marcos Ventura Faria Marcelo Cruz Mendes Welton Luiz Zaluski Emanuel Gava Carlos Augusto da Silva Diego Fernando de Marck Cacilda Márcia Duarte Rios Faria Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons Semina: Ciências Agrárias Cercospora zeae-maydis Exserohilumturcicum Pantoea ananatis Phaeosphaeria maydis Zea mays. |
author_facet |
Cecília Aparecida Spada Marcos Ventura Faria Marcelo Cruz Mendes Welton Luiz Zaluski Emanuel Gava Carlos Augusto da Silva Diego Fernando de Marck Cacilda Márcia Duarte Rios Faria |
author_sort |
Cecília Aparecida Spada |
title |
Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons |
title_short |
Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons |
title_full |
Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons |
title_fullStr |
Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons |
title_full_unstemmed |
Severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons |
title_sort |
severity of leaf diseases in maize inbred lines with different kernel hardness in two sowing seasons |
publisher |
Universidade Estadual de Londrina |
series |
Semina: Ciências Agrárias |
issn |
1676-546X 1679-0359 |
publishDate |
2018-02-01 |
description |
Resistance of maize inbred lines to major leaf diseases should be characterized for the development of new hybrids in breeding programs. Thus, this study aimed to assess the severity of leaf diseases in maize inbredlines with different kernel hardnessand two sowingseasons. We assessed four inbred lines and one check hybrid with dent kernels and four inbred lines and a check hybrid with flint kernels. Treatments were conducted in two sowing seasons, one in October, and another in December 2013. The symptoms of gray leaf spot (Cercospora zeae-maydis), northern leaf blight (Exserohilum turcicum), and white leaf spot (a complex of Phaeosphaeria maydis and Pantoea ananatis) were assessed every 10 days from flowering. The area under the disease progress curve was also calculated. Severity level of the diseases was higher in inbred lines when compared to the check hybrds (AG8041 PRO and P30R50YH), regardless of kernel hardness. Dent-kernel inbred lines showed a higher severity of northern leaf blight symptoms when compared to flint-kernelones. It is worth mentioning that disease severity increased as sowing was delayed. |
topic |
Cercospora zeae-maydis Exserohilumturcicum Pantoea ananatis Phaeosphaeria maydis Zea mays. |
url |
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/28603 |
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