| Autor: |
Bausher, M., Yelenosky, G. |
| Zdroj: |
Journal of Plant Growth Regulation; Sep1986, Vol. 5 Issue 3, p139-147, 9p |
| Abstrakt: |
Progressively higher concentrations of Paclobutrazol-markedly reduced germination of Valencia sweet orange ( Citrus sinensis (L.) Osbeck) seed and induced significant changes in the morphology, growth, and development of roots of Valencia seedlings and rough lemon ( C. limon (L.) Burm. f.) leaves. Threshold concentrations for significant visible effect to radical change ranged from 10 to 10 ppm (2.84×10 to 2.84×10 M) (ai). Initial change was readily evident in reduced lateral and fibrous root development at the lower concentrations (10 ppm). Higher concentrations (10 ppm) resulted in no secondary root formation and progressive basal enlargement terminating in a bulbouslike apex of the primary root. Lack of secondary roots suggests disruption in the pericycle or severe inhibition of meristematic initial cells. Root system changes were not visibly indicated in shoot growth other than strong inhibition of extensions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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