Articles
FERDOR-JULIOR, MYRAN-YUMIR AND ST. JULIEN GF 655-2 ROOTSTOCKS: PROPAGATION BY CUTTINGS WITH GROWTH REGULATORS AND BOTTOM HEAT
Article number
658_95
Pages
629 – 635
Language
English
Abstract
The aim of this work was to evaluate several treatments performed with cuttings of three Prunus sp. rootstocks to improve adventitious rooting.
Hardwood shoots of Ferdor-Julior (FJ), Myran-Yumir (MY) and St.
Julien GF 655-2 (GF 655-2) rootstocks were collected in late autumn from plants growing in a mild winter climate.
Cuttings were taken from proximal and median positions, wounded to the base and treated with 1% indole-3-butyric acid + 1% 1-phenyl-3-methyl-2-pyrazoline-5-one + 5% benomyl and 10% sugar cane (IBA + PPZ). The same mixture was tested without PPZ (IBA). Control treatment was 5% benomyl + 10% sugar (Control). Industrial talc was used as the carrier.
After treatment, cuttings were kept wrapped and wetted in a cool place (10ºC – 15ºC) during 50 days.
Then, they were placed in rooting beds with perlite medium; one half with bottom heat (21 ± 2ºC) and the other under greenhouse conditions.
Two hundred and forty cuttings were used for each rootstock.
Random distribution for treatments was used in beds.
Responses were evaluated twice: 90 and 105 days after the beginning of the experiment.
Percentage of surviving plants and root quantity and quality (length, thickness and weight) were recorded.
GF 655-2 rootstock with growth regulators rooted quite readily. 100% cuttings showed roots 50 days after the beginning of the experiment.
IBA and IBA +PPZ treatments improved rooting in FJ cuttings.
Control cuttings did not show roots.
Growth regulators promoted abundant calluses and a low number of root primordia on Myran-Yumir cuttings.
IBA and IBA+PPZ treatments induced more than 80% death of cuttings.
Nevertheless, survival in controls was more than 70%.
Hardwood shoots of Ferdor-Julior (FJ), Myran-Yumir (MY) and St.
Julien GF 655-2 (GF 655-2) rootstocks were collected in late autumn from plants growing in a mild winter climate.
Cuttings were taken from proximal and median positions, wounded to the base and treated with 1% indole-3-butyric acid + 1% 1-phenyl-3-methyl-2-pyrazoline-5-one + 5% benomyl and 10% sugar cane (IBA + PPZ). The same mixture was tested without PPZ (IBA). Control treatment was 5% benomyl + 10% sugar (Control). Industrial talc was used as the carrier.
After treatment, cuttings were kept wrapped and wetted in a cool place (10ºC – 15ºC) during 50 days.
Then, they were placed in rooting beds with perlite medium; one half with bottom heat (21 ± 2ºC) and the other under greenhouse conditions.
Two hundred and forty cuttings were used for each rootstock.
Random distribution for treatments was used in beds.
Responses were evaluated twice: 90 and 105 days after the beginning of the experiment.
Percentage of surviving plants and root quantity and quality (length, thickness and weight) were recorded.
GF 655-2 rootstock with growth regulators rooted quite readily. 100% cuttings showed roots 50 days after the beginning of the experiment.
IBA and IBA +PPZ treatments improved rooting in FJ cuttings.
Control cuttings did not show roots.
Growth regulators promoted abundant calluses and a low number of root primordia on Myran-Yumir cuttings.
IBA and IBA+PPZ treatments induced more than 80% death of cuttings.
Nevertheless, survival in controls was more than 70%.
Authors
S. Dessy, S. Radice, A. Andorno, M. Ontivero
Keywords
Indole-3-butyric acid, IBA, 1-phenyl-3-methyl-2-pyrazoline-5-one, PPZ, proximal woody cuttings, median woody cuttings
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