Use este identificador para citar ou linkar para este item:
http://repositorio.ufla.br/jspui/handle/1/11838
Título: | Uso de mistura de raças de C. lindemuthianum na avaliação da antracnose no feijoeiro |
Título(s) alternativo(s): | Using of mixture of races of C. lindemuthianum in evaluation of anthracnose in common bean |
Autores: | Souza, Elaine Aparecida de Santos, João Bosco dos Costa, Maria Cristina Mendes |
Palavras-chave: | Feijão - Inoculação artificial Feijão - Diversidade genética Feijão - Resistência Feijão - Melhoramento genético Phaseolus vulgaris Beans - Artificial inoculation Beans - Genetical diversity Beans - Resistance Beans - Breeding |
Data do documento: | 30-Set-2016 |
Editor: | Universidade Federal de Lavras |
Citação: | FALLEIROS, M. O. Uso de mistura de raças de C. lindemuthianum na avaliação da antracnose no feijoeiro. 2016. 65 p. Dissertação (Mestrado em Genética e Melhoramento de Plantas)-Universidade Federal de Lavras, Lavras, 2016. |
Resumo: | Wide pathogenic variability of the fungus Colletotrichum lindemuthianum has made it difficult to obtain cultivars with durable resistance to anthracnose in common bean. Assessments by artificial inoculation of different races can be unviable in common bean breeding program since many physiological races have been found. An alternative is using mixture of isolates from different races. However, there are scarce information about the efficiency of this method in the selection of resistant common bean plants and the virulence of pathogen isolates mixture. Thus, the aim of this study was to assess the severity of anthracnose in common bean through inoculation of races 65, 73 and 81 of C. lindemuthianum individually and in mixture, and compare the virulence of isolates/mixture. Two experiments were conducted, both in completely randomized design with Split plot. Isolates were inoculated individually as well in a mixture of the three races (M1) and also obtaining mixtures of the 1 st (M2 and M3) and 2 nd (M4, M5, M6 and M7) generations, in the cultivars Pérola and Majestoso. Area under the disease progress curve (AUDPC) and scores of the severity at 10 days after inoculation were evaluated. The isolates/mixtures were characterized as to mycelial compatibility, sporulation rate and percentage of germination and conidial anastomosis tubes (CATs). From the results obtained, it was evidence that the mixture of races of C. lindemuthianum was efficient in evaluating the severity of anthracnose and most mixtures of races of C. lindemuthianum were more virulent than the races individually. |
URI: | http://repositorio.ufla.br/jspui/handle/1/11838 |
Aparece nas coleções: | Genética e Melhoramento de Plantas - Mestrado (Dissertações) |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
DISSERTAÇÃO_Uso de mistura de raças de C. lindemuthianum na avaliação da antracnose no feijoeiro.pdf | 1,17 MB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.