Data/hora: 09/06/2024 10:37:55

Provedor de dados: | 74
País: | Brazil
Título: | Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)
Autores: | Abreu,Flávia Barbosa; Silva,Derly José Henriques da; Cruz,Cosme Damião; Mizubuti,Eduardo Seiti Gomide.
Data: | 2008-01-01
Ano: | 2008
Palavras-chave: | Late blight; Lycopersicon esculentum; Lycopersicon hirsutum; Solanum lycopersicum; Solanum habrochaites.
Resumo: | In Brazil, no commercial tomato (Solanum lycopersicum L. formerly Lycopersicon esculentum Mill.) varieties are available which are resistant to the late blight, one of the most important tomato diseases, produced by the phytopathogenic oomycete Phytophthora infestans. The wild tomato (Solanum habrochaites Knapp &amp;amp; Spooner, formerly Lycopersicon hirsutum Dunal) shows resistance to P. infestans, because of which we investigated an interspecific cross between S. lycopersicum cv. Santa Clara and S. habrochaites accession BGH 6902 maintained at the Horticultural Germplasm Bank at the Federal University of Viçosa (Banco de Germoplasma de Horticultura (BGH), Universidade Federal de Viçosa (UFV), Viçosa, Minas Gerais, Brazil) The genitors, F1, F2, BC1 and BC2 were used to study the inheritance of resistance to P. infestans and to estimate the genetic parameters associated with resistance. Analysis of the area under the disease progress curve (AUDPC) indicated that inheritance is polygenic and that dominance controls character, whereas mean analysis showed that the additive effect was the most important. Although the character presents variability, the heritability is low which generates the need to better control the environment to obtain success with the selection.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300016
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572008000300016
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.31 n.2 2008
Fonte: | info:eu-repo/semantics/openAccess