ISHS Acta Horticulturae 227: International Symposium on Vegetative Propagation of Woody Species
EFFECT OF PHENOLIC ACIDS ON RHIZOGENESIS IN A GRAPE ROOTSTOCK ("140 RUGGERI") CUTTINGS |
| Authors: | G. Bartolini, A. Fabbri, M. Tattini |
| Abstract:
The effect of phenolic acids of the benzoic and cinnamic acids series on rooting of "140 Ruggeri" cuttings was tested at 3 different times of the year. The phenolics, supplied as an overnight basal dip in a 10-4M water solution, usually enhanced the quantity of roots produced in all rooting tests, even when a 2000 ppm IBA treatment followed the first treatment; the percentage of rooted cuttings was increased by several phenolics treatments in April and September, in the presence of a relatively good natural rooting ability, but not in November, when natural rooting was poor. Differences in the chemical structure of the phenolic acids (length of the side chain, and number and position of the hydroxy groups) involve significantly different effects on adventitious root formation (ARF), and on the phenolic/auxin interaction, but none of the above chemical features alone can be seen as a determinant in causing the biological action of the phenolic, whose activity appears instead determined by its structure as a whole. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
