ISHS Acta Horticulturae 169: International Workshop on Improvement of Sweet and Sour Cherry Varieties and Rootstocks
AN OVERVIEW OF THE CHERRY ROOTSTOCK BREEDING PROGRAM AT GIESSEN 1965 – 1984 |
| Author: | W. Gruppe |
| Abstract:
In 1965 a breeding program for sweet cherry rootstocks was established at Giessen based upon interspecific cherry hybrids. The initial aim was to learn more about the rootstock potential of plants with a wide range of genetic variability. The program proceeded by several steps: (1) First cycle of hybridisation of cherry species. (2) Raising test trees of sweet cherry cultivars grafted onto rootstocks of pre-selected seedling-progenies and clones. (3) Evaluation of the orchard behaviour of these rootstocks in preliminary trials. (4) Preliminary trials with clones of promising crosses not previously tested. (5) Research into other attributes of hybrid rootstocks and scion-rootstock combinations. (6) Rootstock-cultivar trials with promising candidate clones under different environmental and pomological conditions. (7) Initiation of a second breeding cycle utilizing the results from orchards trials and special studies. | |
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