ISHS Acta Horticulturae 146: International Workshop on Controlling Vigor in Fruit Trees
PROSPECTS FOR DEVELOPING LOW VIGOR FRUIT TREE CULTIVARS |
| Authors: | M. Faust, S.W. Zagaja |
| Abstract:
Present knowledge on the possibilities to develop cultivars of fruit trees with reduced size is summarized. Terms commonly used in horticultural literature: vigor of the tree, spur-type, compact, and genetic dwarf are described. It is proposed that vigor is used for describing rate of growth; spur-type and short internode when appropriate to describe a condition but not used as synonym; and compact type for describing trees which at the same time have a combination of small size, short internodes and high spurriness. Genetic dwarf is a collective term that should include all types of reduced-size trees which transmit this character genetically. The present spur-type apple cultivars, although only moderately reduced in size, should be considered as genetic dwarfs. | |
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