Data/hora: 11/06/2024 16:23:00

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 15/06/1998
Data da última atualização: | 15/06/1998
Autoria: | CABRAL, J. R. S.; MATOS, A. P. de; COPPENS d'ECECKENBRUGGE, G.
Afiliação: | EMBRAPA-CNPMF; CIRAD-FLHOR/IPGRI.
Título: | Segregation for resistance to fusariose, leaf margin type, and leaf colour from the EMBRAPA pineapple hybridization programme
Ano de publicação: | 1997
Fonte/Imprenta: | Acta Horticulturae, v.425, p.193-200, Olanda, 1997
Idioma: | Francês
Conteúdo: | During the hybridization programme for breeding cultivars resistant to fusariose, segregations for resistance, leaf type, and leaf colour were recorded in crosses involving cvs `Perola', `Primavera', `Roxo de Tefe', `Guiana', `Smooth Cayenne', `Perola', `Puerto Rico', and Ananas bracteatus `Sao Bento', `Perola' and `Primavera' transmitted their fusariose resistance to all their progenies, resulting in a low and normal mortality in artificially-inoculated seedlings. Crosses between susceptible `Guiana' and `Perolera' produced entiirely in artificially-inoculated seedlings. Crosses between susceptible `Guiana' and `Perolera'produced entirely susceptible progenies showing very low survival rates at the end of the test.These results suggest a simple genetic mechanism, probably a single gene with dominance.Segregations for leaf types were in accordance with frequencies expected from the bigenic model of Collins and Kerns. `Primavera' is homozygous for tge `pioing' leaf type. Segregations for leaf colour as studied in crosses involving the red-leaved `Rojo de Tefe' indicated a dominant monogenic inheritance of the dark red leaf type. Simple dominant inheritance of the three traits opens good prospects for the creation of smooth and attractive resistant cultivars.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (4154-1) - ADC - AP - -- -  -  - 635.05 - DIS