Controle de la plagiotropie des racines latérales chez Theobroma cacao L.
The young Theobroma cacao seedling has an orthotropic principal root which bears lateral roots differing from the former in being plagiotropic, more slender with a reduced growth rate and with a reduction in the number of vascular bundles from 6 and more to 4. The plagiotropism and some of the characters which accompany it correspond to the differentiations which become autonomous and therefore stable. The acquisition of this stability is progressive and is realised during the days which follow the formation of the lateral roots under the influence of the orthotropic principal root. This influence is principally conveyed to the lateral roots via the young protoxylem bundles with which they are in contact. The morphological and anatomical characters, which ordinarily accompany plagiotropism, may prove to be independant of each other as they can be dissociated experimentally
| Autor principal: | |
|---|---|
| Formato: | biblioteca |
| Publicado: |
1970
|
| Materias: | THEOBROMA CACAO, PLANTULAS, ENRAIZAMIENTO, SISTEMA RADICULAR, ETAPAS DE DESARROLLO DE LA PLANTA, |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | The young Theobroma cacao seedling has an orthotropic principal root which bears lateral roots differing from the former in being plagiotropic, more slender with a reduced growth rate and with a reduction in the number of vascular bundles from 6 and more to 4. The plagiotropism and some of the characters which accompany it correspond to the differentiations which become autonomous and therefore stable. The acquisition of this stability is progressive and is realised during the days which follow the formation of the lateral roots under the influence of the orthotropic principal root. This influence is principally conveyed to the lateral roots via the young protoxylem bundles with which they are in contact. The morphological and anatomical characters, which ordinarily accompany plagiotropism, may prove to be independant of each other as they can be dissociated experimentally |
|---|