| Journal: | Acta scientiarum. Agronomy |
| Database: | PERIÓDICA |
| System number: | 000459576 |
| ISSN: | 1679-9275 |
| Authors: | Carlos, Mayara Cazadini1 Vivas, Marcelo1 Costa, Ariane Cardoso1 Vasconcelos, Luana Cruz1 Lima, Wallace Luís de2 Almeida, Rafael Nunes de1 Valadares, Fernanda Vargas1 |
| Institutions: | 1Universidade Estadual do Norte Fluminense, Centro de Ciencias e Tecnologias Agropecuarias, Campos dos Goytacazes, Rio de Janeiro. Brasil 2Instituto Federal do Espirito Santo, Campus de Alegre, Alegre, Espirito Santo. Brasil |
| Year: | 2022 |
| Volumen: | 44 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | The cultivation of special corns, such as baby corn, has had a positive influence on the economy of the country. Despite its importance, there is still a need for studies aimed at increasing production and planting areas of the crop. Phytosanitary studies are of particular interest, as the cultivation of such crops is susceptible to a series of pathogens, such as Bipolaris maydis, Exserohilum turcicum, and Puccinia polysora. The use of resistant cultivars is the most effective way to prevent the occurrence of these diseases. Thus, the present study aimed to identify popcorn lines that have the potential for baby corn production and are resistant to the main leaf diseases that affect the crop. The experiment was conducted in randomized blocks with four replications of 30 lines in each area, during two planting seasons. The area was located at the Federal Institute of Espírito Santo (IFES) Campus of Alegre, situated in Rive district, Espírito Santo State, Brazil. Using the obtained data, the area under the disease progress curve was obtained. Subsequently, analysis of the joint variance of the data was conducted, and when a significant effect was found, a grouping of means test was conducted. The Mahalanobis distance for each pair of lines was also calculated, and the genetic distance matrix was used to construct a dendrogram using the UPGMA method. Considering the averages obtained for the three diseases (Southern corn leaf blight, Northern corn leaf blight, and Southern rust), lines L61, L63, L65, L683, L684, L685, L691, L694, and L695 were identified as possible donors of resistance alleles for multiple diseases. Multivariate analysis efficiently grouped the lines L61, L63, L684, L685, and L691, which are described as most resistant in the univariate analysis |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Gramíneas, Genética, Fitotecnia, Maíz palomero, Resistencia a enfermedades, Zea mays, Hojas |
| Keyword: | Gramineae, Genetics, Crop husbandry, Popcorn, Disease resistance, Leaves, Zea mays |
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