Data/hora: 10/06/2024 00:40:43

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 19/08/1999
Data da última atualização: | 19/08/1999
Autoria: | MOSQUEDA-VAZQUEZ, R.; ARAGAKI, M.; NAKASONE, H. Y.
Afiliação: | University of Hawaii, Honolulu, HI 96822.
Título: | Screening of Carica papaya L. Seedlings for resistance to Root Rot Caused by
Ano de publicação: | 1981
Fonte/Imprenta: | J. Amer. Soc. Hort. Sci, v.106, n.4, p.484-487, 1981
Idioma: | Inglês
Conteúdo: | Papaya seedlings being tested for resistance to Phytophthora palmivora root rot were inoculated with sporangial suspensions which varied from 0 to 18,000/plant. Mortality counts and disease ratings of seedlings taken 1 month after inoculation showed that: (a) developmental resistance increased as seedlings became older and appeared totally developed by the time seedlings were 2 months old; (b) comparisons among papaya lines inoculated with increasing concentrations of inoculum demonstrated a dosage response; (c) 1-month-old papaya lines inoculated with a uniform concentration of inoculum (5,250 sporangia/plant) could be separated into 3 distinct groups. Line 8, `Waimanalo'-23, `Waimanalo'-24, and line 40 were resistant; 45-T22 and `Kapoho Solo' were moderately resistant and `Higgins' was susceptible. The correlation between green greenhouse and field mortality was r = 0.955, which supports the reliability of the method.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (17310-1) - ADD - SP - -- - S6008 -  - S6008 - DIS