ISHS Acta Horticulturae 227: International Symposium on Vegetative Propagation of Woody Species
SCREENING FOR COMPATIBILITY OF CHERRY COMBINATIONS (P. AVIUM/P. CERASUS) BY GRAFTING STRESS |
| Author: | H. Schimmelpfeng |
| Abstract:
In the long run late bearing and high vigour-characteristics of sweet cherries on P. avium can only be met by the use of dwarfing rootstocks. Using a range of Eu- and Pseudocerasus material difficulties have been experienced since these species as well as various hybrids display varying degrees of incompatibility. Compared to immediate (absolute) incompatibility already visible in the nursery and avoidable by appropriate choice of variety, the financial losses caused by delayed incompatibility in the field are much higher and can therefore not be tolerated in commercial fruit growing. The lack of suitable methods to forecast an economically justifiable life span of graft combinations under laboratory conditions necessitates resorting to field trials. At the same time these supply further evaluation criteria such as vigour, growth habit, cropping behaviour, fruit quality etc. However, loss of experimental trees causes unnecessarily high investments for acreage and management. It was therefore attempted to cause advanced failures by extreme conditions at the stage of unification between rootstock and scion, i.e. only combinations of optimum (=persistent) affinity were used for further assessment. | |
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