|
Registro Completo |
|
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
|
Data corrente: |
11/09/1996 |
|
Data da última atualização: |
17/05/2023 |
|
Autoria: |
SHARMA, N. K.; SKIDMORE, D. I. |
|
Afiliação: |
University of cambridge, Pembroke Street, Cambridige CB2 3DX, UK. |
|
Título: |
In vitro expression of partial resistance to Phytophthora palmivora byshoot cultures of papaya. |
|
Ano de publicação: |
1988 |
|
Fonte/Imprenta: |
Plant Cell, Tissue and Organ Culture. v.14, p.187-196, 1988. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Shoot apices of Carica papaya were multiplied in vitro on solidified nutrient media supplemented with a-naphthyl-acetic acid and 6-benzylaminopurine. The micropropagated shoots were inoculated in vitro, trough a stem wound, with a sporangial suspension (1.2 x 10\\4 sporangia ml-1)of Phytophthora palmivora. The symptoms exhibited by the shoots in vitro were similar to those described previously for infection of the whole plant in the field. The time taken for the host tissue to become brown and to wilt and the time to sporulation of the pathogen were all recorded for each shoot of four varieties of papaya challenged with each of ten isolates of P. palmivora. Significant differences were observed between host-pathogen combinations for these variables and host-s pecificity was detected amongst the isolates of P. palmivora. The timetaken for the shoot to wilt was positively correlated with the time tosporulation of the isolate but both these variables were negatively correlated with the time to browning of the shoot. In vitro selection for disease resistance will be useful during breedindg progammes involving papaya genotypes which are maintained through clonal propagation. |
|
Palavras-Chave: |
disease; Peneiramento; resistance. |
|
Thesagro: |
Carica Papaya; Doença; Mamão; Phytophthora Palmivora; Resistência. |
|
Thesaurus Nal: |
screening. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01874naa a2200241 a 4500
001 1647782
005 2023-05-17
008 1988 bl uuuu u00u1 u #d
100 1 $aSHARMA, N. K.
245 $aIn vitro expression of partial resistance to Phytophthora palmivora byshoot cultures of papaya.$h[electronic resource]
260 $c1988
520 $aShoot apices of Carica papaya were multiplied in vitro on solidified nutrient media supplemented with a-naphthyl-acetic acid and 6-benzylaminopurine. The micropropagated shoots were inoculated in vitro, trough a stem wound, with a sporangial suspension (1.2 x 10\\4 sporangia ml-1)of Phytophthora palmivora. The symptoms exhibited by the shoots in vitro were similar to those described previously for infection of the whole plant in the field. The time taken for the host tissue to become brown and to wilt and the time to sporulation of the pathogen were all recorded for each shoot of four varieties of papaya challenged with each of ten isolates of P. palmivora. Significant differences were observed between host-pathogen combinations for these variables and host-s pecificity was detected amongst the isolates of P. palmivora. The timetaken for the shoot to wilt was positively correlated with the time tosporulation of the isolate but both these variables were negatively correlated with the time to browning of the shoot. In vitro selection for disease resistance will be useful during breedindg progammes involving papaya genotypes which are maintained through clonal propagation.
650 $ascreening
650 $aCarica Papaya
650 $aDoença
650 $aMamão
650 $aPhytophthora Palmivora
650 $aResistência
653 $adisease
653 $aPeneiramento
653 $aresistance
700 1 $aSKIDMORE, D. I.
773 $tPlant Cell, Tissue and Organ Culture.$gv.14, p.187-196, 1988.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
