Articles
BASIC TREE ARCHITECTURAL TRAITS OF DIFFERENT CHESTNUT CULTIVARS RESEARCH IN SLOVENIA
Article number
693_7
Pages
79 – 84
Language
English
Abstract
In 1996 we started the research into twelve introduced chestnut cultivars.
They have been compared to the indigenous genotype Sobota-1 in two locations in Slovenia.
Due to still rather spread virulent strains of chestnut blight (Cryphonectria parasitica (Murr.) Barr.) in certain parts of Slovenia, different percentages of tested trees (from 30% of Bouche de Betizac to 91% of Bournette) have been eliminated from the experimental plots during the period of eight years.
The cultivars Colossal, Marsol and Skookum exhibit a rather vigorous growth. Colossal has a markedly spreading growth habit, while Marsol exhibits an erect tree habit.
The weakest growth has been observed in the cultivar Precoce Migoule which has developed the lowest and narrowest crown with sparse branching density.
The vigour in the cultivar Primato is also weak and its crown is by one third smaller than the crown of more vigorous cultivars.
The largest crown has been developed by the cultivar Skookum. The cultivar Bouche de Betizac has the highest bearing potential, its growth is vigorous and medium erect with dense branching.
In the report, for the most perspective cultivars, the results of the quantitative architectural analysis conducted on the fruiting branch composed of shoots of different age (length of shoots, diameter, number of nodes, angle, number of vegetative and generative buds, and number of fruits) are also presented.
They have been compared to the indigenous genotype Sobota-1 in two locations in Slovenia.
Due to still rather spread virulent strains of chestnut blight (Cryphonectria parasitica (Murr.) Barr.) in certain parts of Slovenia, different percentages of tested trees (from 30% of Bouche de Betizac to 91% of Bournette) have been eliminated from the experimental plots during the period of eight years.
The cultivars Colossal, Marsol and Skookum exhibit a rather vigorous growth. Colossal has a markedly spreading growth habit, while Marsol exhibits an erect tree habit.
The weakest growth has been observed in the cultivar Precoce Migoule which has developed the lowest and narrowest crown with sparse branching density.
The vigour in the cultivar Primato is also weak and its crown is by one third smaller than the crown of more vigorous cultivars.
The largest crown has been developed by the cultivar Skookum. The cultivar Bouche de Betizac has the highest bearing potential, its growth is vigorous and medium erect with dense branching.
In the report, for the most perspective cultivars, the results of the quantitative architectural analysis conducted on the fruiting branch composed of shoots of different age (length of shoots, diameter, number of nodes, angle, number of vegetative and generative buds, and number of fruits) are also presented.
Publication
Authors
A. Solar, F. Stampar
Keywords
Castanea sativa, Castanea sativa x Castanea crenata, tree architecture, fruiting branch, morphometric analysis
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