Articles
VEGETATIVE PROPAGATION OF PEAR AND QUINCE ROOTSTOCKS USING HARDWOOD CUTTINGS
Article number
800_95
Pages
701 – 706
Language
English
Abstract
The most widely used rootstocks for the nursery production of pears are still those taken from certain cultivars of pear, Pyrus communis L. and also quince, Cydonia oblonga P. Mill.
Two groups of rootstocks were used to evaluate different techniques for their vegetative propagation using hardwood cuttings.
The first group comprised pear rootstocks: Pyrodwarf®, Pyroplus® (Rhenus 3), OHxF 333, Fox 11, the pear seedling Pyrus communis and Cydomalus hybrids between Malus communis × Cydonia oblonga. The second group included quince rootstocks: BA 29, Sydo, MA and S1. In the winter months of January and February, stems of 1520 cm length were taken from these trees and cuttings were prepared in a standard manner.
Two rooting hormone treatments were used: 1% Racine (2.5% a-napthalene acetic acid) and 0.5% Rhizopon AA (2.5% indole-3-butyric acid), compared to an untreated control.
Half the treated cuttings were kept at 21°C for a period of 25–35 days, until callus formed, and the other half were kept at 5°C in a cooling box.
The rootstocks Cydomalus and Pyrodwarf® performed best regarding callus formation (100% of cuttings), followed by Pyroplus® (75%) and OHxF 333 (76%). The highest overall success rates were seen in Pyrodwarf® (94%), Pyroplus® (69%) and S1 (67%). The poorest results were seen in Sydo, Adams and seedling of P. Communis, and the cultivars Mansan, Shinseiki and BA 29. The biggest problem in taking cuttings was finding a suitable growing medium to encourage good root formation.
Two groups of rootstocks were used to evaluate different techniques for their vegetative propagation using hardwood cuttings.
The first group comprised pear rootstocks: Pyrodwarf®, Pyroplus® (Rhenus 3), OHxF 333, Fox 11, the pear seedling Pyrus communis and Cydomalus hybrids between Malus communis × Cydonia oblonga. The second group included quince rootstocks: BA 29, Sydo, MA and S1. In the winter months of January and February, stems of 1520 cm length were taken from these trees and cuttings were prepared in a standard manner.
Two rooting hormone treatments were used: 1% Racine (2.5% a-napthalene acetic acid) and 0.5% Rhizopon AA (2.5% indole-3-butyric acid), compared to an untreated control.
Half the treated cuttings were kept at 21°C for a period of 25–35 days, until callus formed, and the other half were kept at 5°C in a cooling box.
The rootstocks Cydomalus and Pyrodwarf® performed best regarding callus formation (100% of cuttings), followed by Pyroplus® (75%) and OHxF 333 (76%). The highest overall success rates were seen in Pyrodwarf® (94%), Pyroplus® (69%) and S1 (67%). The poorest results were seen in Sydo, Adams and seedling of P. Communis, and the cultivars Mansan, Shinseiki and BA 29. The biggest problem in taking cuttings was finding a suitable growing medium to encourage good root formation.
Publication
Authors
T. Necas, J. Kosina
Keywords
Pyrus, Cydonia, rooting, growth hormones, stimulation
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