ISHS Acta Horticulturae 686: VI International Congress on Hazelnut
ADVENTITIOUS ROOT FORMATION COURSE IN HAZELNUT HARDWOOD CUTTINGS AS A CONSEQUENCE OF FORCING TREATMENTS |
| Authors: | V. Ughini, A. Roversi |
| Keywords: | bottom heat, cyclodestrine, logistic curve, rhizogenesis, ¿Tonda Gentile Langhe¿, vegetative propagation |
| Abstract:
The study of the evolution of hazelnut rooting formation is important for optimising the practice of propagation by cutting. Furthermore, the use of several portions of shoots permits an increase in rooted plants obtainable by means of traditional multiplication. Cuttings taken from 1-year old shoots of ‘Tonda Gentile delle Langhe’ were used, these divided into lower and middle-upper portions. Each portion was treated with different formulations or solutions of IBA (water solution of K salt, hydroalchoholic solution and dispersion in cyclodestrine), all at concentrations of 2,500 ppm, and placed in rooting bedding, which was unheated or with bottom heat at 21° or 27°C. The best percentage of rooting was obtained with the lower portion of the shoot, at 27°C and treated with IBAK (over 70% rooting) and IBA cyclo (over 60% rooting). Furthermore, for each trial, a sample of rooting hardwood cuttings was taken at weekly intervals to monitor the progress of root formation. The results were interpolated by a logistic model curve featuring coefficients which revealed interesting relationships with the experimental variables. | |
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