Articles
EFFECTIVE SYSTEM FOR PROPAGATION OF COLORED CALLA LILY (ZANTEDESCHIA) BY CUTTING AND INTENSIVE GROWTH
Article number
886_32
Pages
233 – 238
Language
English
Abstract
The colored calla lily (Zantedeschia) is a tuberous plant with alternating growth and rest periods.
It is a popular ornamental crop worldwide, suffering, however, from a low propagation rate and susceptibility to bacterial soft-rot Pectobacterium carotovorum. Commercially, multiplication is achieved using seed or tissue culture, and about 2-3 years are needed to obtain tubers of flowering size.
The main objective of this study was the development of an effective propagation system by cutting technique, incubation, intensive growth and a shortening of the propagation cycle.
Uniform mother tubers of Black Magic, 50 g, were used for the experiments.
Cutting techniques affected production of new tubers: division of the mother tuber into 10, 15, 20 or 25 segments resulted in 8, 12, 15 and 18 propagation units respectively.
During the two week incubation period at 28-30°C, the bigger segments usually produced roots, and, following the growing period of 5-6 months, these segments formed significantly larger new tubers, as compared to the non-rooted, smaller propagation units.
Cultivation of the propagation units in perlite, heated to 22°C, increased the growth rate and resulted in the production of larger tubers.
Following the growth stage, the newly-formed tubers were collected, stored and subjected to the regular protocol for flowering.
The propagation process continues for 6-8 months and is comprised of several major stages, each with specific conditions.
It is a popular ornamental crop worldwide, suffering, however, from a low propagation rate and susceptibility to bacterial soft-rot Pectobacterium carotovorum. Commercially, multiplication is achieved using seed or tissue culture, and about 2-3 years are needed to obtain tubers of flowering size.
The main objective of this study was the development of an effective propagation system by cutting technique, incubation, intensive growth and a shortening of the propagation cycle.
Uniform mother tubers of Black Magic, 50 g, were used for the experiments.
Cutting techniques affected production of new tubers: division of the mother tuber into 10, 15, 20 or 25 segments resulted in 8, 12, 15 and 18 propagation units respectively.
During the two week incubation period at 28-30°C, the bigger segments usually produced roots, and, following the growing period of 5-6 months, these segments formed significantly larger new tubers, as compared to the non-rooted, smaller propagation units.
Cultivation of the propagation units in perlite, heated to 22°C, increased the growth rate and resulted in the production of larger tubers.
Following the growth stage, the newly-formed tubers were collected, stored and subjected to the regular protocol for flowering.
The propagation process continues for 6-8 months and is comprised of several major stages, each with specific conditions.
Authors
D. Sandler-Ziv, Z. Gilad, M. Achiam, G. Luria, R. Kamenetsky
Keywords
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