poliploidização em berinjela (solanum melongena l.): i - tratamento de sementes pela colquicina polyplodization in solanum melongena l.: i. seed treatments with colchicine
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1972
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Abstract
Com o objetivo de conseguir plantas poliplóides de berinjela, foram realizados em 1970 alguns tratamentos com colquicina em sementes do cultivar Santa Genebra. Três séries de tratamentos foram efetuadas, era-pregando-se soluções de diferentes concentrações, variando a duração do tratamento e também seu momento de aplicação, isto é, antes, durante e até a germinação. O número de cromossomos nas raízes e o número de estornas do material tratado, quando comparados com o original diplóide, indicam que a completa poliploidização não foi conseguida. O máximo que se constatou até o estádio de desenvolvimento em que foram levadas as observações, foram plantas quiméricas, tanto na parte aérea como nas raízes, provenientes dos tratamentos de sementes em germinação e dos tratamentos mais fortes (0,4% e 0,6%) aplicados antes da germinação das sementes.
Polyploidization in egg-plant has been tried through colchicine treatments in seeds of the cultivar Santa Genebra from Instituto Agronômico. Several trials were made varying the strenght of the solution, the duration of the treatment and the time of its application, that is, before, during, and after seed germination. Chromosome numbers determined in roots as well as the number of stomata of treated material compared to those of original diploid one, indicate that complete polyploidization was not achieved. Instead, chimeric plants either in aerial part or in the roots were detected, that resulted from treatment of seeds in germination and from those stronger treatments (0.4 and 0.6%) applied before germination.
Polyploidization in egg-plant has been tried through colchicine treatments in seeds of the cultivar Santa Genebra from Instituto Agronômico. Several trials were made varying the strenght of the solution, the duration of the treatment and the time of its application, that is, before, during, and after seed germination. Chromosome numbers determined in roots as well as the number of stomata of treated material compared to those of original diploid one, indicate that complete polyploidization was not achieved. Instead, chimeric plants either in aerial part or in the roots were detected, that resulted from treatment of seeds in germination and from those stronger treatments (0.4 and 0.6%) applied before germination.
| Reference Key |
medina1972bragantiapoliploidizao
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| Authors | ;Dixier M. Medina;Catalina R. Lopes Longo;Neusa Diniz da Cruz;Luiz E. Azzini;J. A. Usberti Filho |
| Journal | revista espanola de salud publica |
| Year | 1972 |
| DOI |
10.1590/S0006-87051972000100023
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| URL | |
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