Vol. 28

Title:
IMPROVEMENT OF HARDY NURSERY STOCKS

Authors:
J.B. Sweet, R. Anne Goodall and A.I. Campbell

pp: 220-223

Abstract:
Selection of plants with improved or new ornamental characters of horticultural value has been a feature of the nursery trade for many years. Nurserymen have been aware of the variation which occurs in plant material and have selected, propagated, named and sold improved cultivars and clones. However, the major attributes considered by propagators are ease of rooting and rapid growth, much less attention being paid to the eventual appearance of the plant. In consequence it is, e.g., the easiest rooting × Cupressocyparis leylandii clone, or the more rapid growing Cornus alba ‘Gouchaltii’ cultivar, that is chosen rather than the cultivars with the best appearance when mature.

Recently a more scientific approach to the selection of nursery stocks, coupled with an investigation of their virus diseases, has been initiated in several countries. At Long Ashton propagating material of several common trees and shrubs has

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