Sowing date reduces the incidence of wheat blast disease
Abstract: The objective of this work was to assess the effect of sowing date on the intensity of wheat blast disease, as well as the yield losses caused by this disease in different wheat (Triticum aestivum) genotypes. The experiments were conducted in 2013 at the Sertãozinho experimental station of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Embrapa Informação Tecnológica
2016-05-01
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| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/pdf/pab/v51n5/1678-3921-pab-51-05-00631.pdf |
| _version_ | 1819003020035227648 |
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| author | Maurício Antônio de Oliveira Coelho Gisele Abigail Montan Torres Paulo Roberto Cecon Flávio Martins Santana |
| author_facet | Maurício Antônio de Oliveira Coelho Gisele Abigail Montan Torres Paulo Roberto Cecon Flávio Martins Santana |
| author_sort | Maurício Antônio de Oliveira Coelho |
| collection | DOAJ |
| description | Abstract: The objective of this work was to assess the effect of sowing date on the intensity of wheat blast disease, as well as the yield losses caused by this disease in different wheat (Triticum aestivum) genotypes. The experiments were conducted in 2013 at the Sertãozinho experimental station of Empresa de Pesquisa Agropecuária de Minas Gerais (Epamig), in the municipality of Patos de Minas, in the state of Minas Gerais, Brazil. Fourteen wheat genotypes and two sowing dates were evaluated. The experimental design was a randomized complete block with three replicates. The evaluated variables were: incidence, severity, thousand grain weight (TGW), grain yield, and yield losses. A disease index (DI) was calculated, based both on the incidence and the severity of the disease, to measure blast intensity in wheat. The sowing date significantly affected DI, TGW, and grain yield. Significant linear correlations were observed between DI and yield losses (0.89), between losses and TGW (-0.85), and between losses and grain yield (-0.93). For wheat blast, DIs greater than or equal to 0.5 indicate potential yield losses equal to or greater than 70%. The EP063030 line and the MGS Brilhante and BRS 264 cultivars are the most tolerant to blast, when exposed to high disease pressure. |
| first_indexed | 2024-12-20T23:14:21Z |
| format | Article |
| id | doaj.art-1bd9f3357b374c14bc47d0e1dfb984ab |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-12-20T23:14:21Z |
| publishDate | 2016-05-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-1bd9f3357b374c14bc47d0e1dfb984ab2022-12-21T19:23:40ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39212016-05-0151563163710.1590/S0100-204X2016000500025Sowing date reduces the incidence of wheat blast diseaseMaurício Antônio de Oliveira CoelhoGisele Abigail Montan TorresPaulo Roberto CeconFlávio Martins SantanaAbstract: The objective of this work was to assess the effect of sowing date on the intensity of wheat blast disease, as well as the yield losses caused by this disease in different wheat (Triticum aestivum) genotypes. The experiments were conducted in 2013 at the Sertãozinho experimental station of Empresa de Pesquisa Agropecuária de Minas Gerais (Epamig), in the municipality of Patos de Minas, in the state of Minas Gerais, Brazil. Fourteen wheat genotypes and two sowing dates were evaluated. The experimental design was a randomized complete block with three replicates. The evaluated variables were: incidence, severity, thousand grain weight (TGW), grain yield, and yield losses. A disease index (DI) was calculated, based both on the incidence and the severity of the disease, to measure blast intensity in wheat. The sowing date significantly affected DI, TGW, and grain yield. Significant linear correlations were observed between DI and yield losses (0.89), between losses and TGW (-0.85), and between losses and grain yield (-0.93). For wheat blast, DIs greater than or equal to 0.5 indicate potential yield losses equal to or greater than 70%. The EP063030 line and the MGS Brilhante and BRS 264 cultivars are the most tolerant to blast, when exposed to high disease pressure.http://www.scielo.br/pdf/pab/v51n5/1678-3921-pab-51-05-00631.pdfMagnaporthe oryzaePyricularia oryzaeTriticum aestivumdisease indexseveritytolerance. |
| spellingShingle | Maurício Antônio de Oliveira Coelho Gisele Abigail Montan Torres Paulo Roberto Cecon Flávio Martins Santana Sowing date reduces the incidence of wheat blast disease Pesquisa Agropecuária Brasileira Magnaporthe oryzae Pyricularia oryzae Triticum aestivum disease index severity tolerance. |
| title | Sowing date reduces the incidence of wheat blast disease |
| title_full | Sowing date reduces the incidence of wheat blast disease |
| title_fullStr | Sowing date reduces the incidence of wheat blast disease |
| title_full_unstemmed | Sowing date reduces the incidence of wheat blast disease |
| title_short | Sowing date reduces the incidence of wheat blast disease |
| title_sort | sowing date reduces the incidence of wheat blast disease |
| topic | Magnaporthe oryzae Pyricularia oryzae Triticum aestivum disease index severity tolerance. |
| url | http://www.scielo.br/pdf/pab/v51n5/1678-3921-pab-51-05-00631.pdf |
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