Data/hora: 14/06/2024 14:55:09

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 04/03/2010
Data da última atualização: | 26/06/2023
Autoria: | SOUZA, M. C. de; STUCHI, E. S.; GOES, A. de.
Afiliação: | Marcelo Claro de Souza, UNESP; EDUARDO SANCHES STUCHI, CNPMF; Antonio de Goes, UNESP.
Título: | Evaluation of tangerine hybrid resistance to Alternaria alternata.
Ano de publicação: | 2009
Fonte/Imprenta: | Scientia Horticulturae, Amsterdam, v.123, n.1, p. 1-4, 2009.
DOI: | 10.1016/j.scienta.2009.07.005
Idioma: | Inglês
Conteúdo: | The Alternaria Brown Spot, caused by Alternaria alternata, is a major fungal disease in some kinds of tangerines, tangor, mandarins and pomelos. In Brazil as well as worldwide, A. alternata can cause necrosis in fruits, branches and leaves, causing substantial profit loss. In the present research, in laboratory conditions and in the field, we evaluated the resistance to the fungus, in leaves and fruits, for 22 varieties and hybrids of tangerines. To this end, we evaluated genotypes belonging to the Germplasm Bank of the Estação Experimental de Citricultura de Bebedouro. The resistant genetic materials (found in leaves and fruits) represented four varieties of clementines (Citrus clementina); six varieties of mandarins (two belonging to C. reticulata, two to C. tangerina, one to C. deliciosa and one to C. nobilis); one tangelo (C. tangerina x C. paradisi); two mandarin hybrids (one resulting from crossing C. nobilis x C. deliciosa and the other from crossing C. clementina x C. reticulata); one tangor hybrid (C. clementina) and two satsuma hybrids (C. unshiu x C. deliciosa). We also determined a relation between the inoculation of leaves and fruits. The resistance and susceptibility following inoculation in leaves and fruits supports a relationship between these organs and the physiological responses observed for the valuated genotypes.
Palavras-Chave: | Alternaria brown spot; Citrus sp; Spot Varietal resistance.
Thesagro: | Alternaria Alternata.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (26651-1) - UPC - AP - DD - Publicação digital -  -  - DIS