INTERACTIONS BETWEEN DIFFERENT VEGETATIVE PRUNUS ROOTSTOCKS AND SCION GROWTH AND PRODUCTIVITY OF APRICOT

The study was carried out in the conditions of South-East of Romania, at the Research Station for Fruit Growing Constanta, during 2003-2009. The behavior of nine clonal Prunus rootstocks was studied: ‘Scoldus’, ‘Galbior’, ‘Saint Julien A’ (from Prunus domestica), ‘Cs 5’, ‘Cs 4’, ‘Apricor’, ‘Cs 1’ (interspecific hybrids between Prunus cerasifera x Prunus armeniaca), ‘Otesani 8’ (clonal selection from P. Domestica)) and ‘Miroper’ (interspecific hybrid between P. cerasifera x P. persica) grafted with 3 apricot cultivars: ‘Sirena’, ‘Selena’ and ‘Sulmona’. The aim of this study was to estimate the influence of these rootstocks on survival and agronomic performances of 3 apricot cultivars from the 19^th to the 25^th years after planting.
An experimental orchard was planted in spring of 1984, at 4.5 by 3 m, with trees trained as vase.
The following traits were recorded: % of trees loss, the growth of shoots, yield on tree, trunk cross sectional area, productivity.
As results of the investigations we found that: ‘Saint Julien A’, ‘Otesani 8’, ‘Scoldus’ and ‘Miroper’ rootstocks had induced longevity to apricot grafted cultivars, having the smallest % of trees loss. ‘Saint Julien A’ and ‘Otesani 8’ rootstocks had induced a good capacity of shooting to apricot grafted cultivars.
The vigor of the cultivar – rootstock combinations was differed according to cultivar and rootstock. ‘Miroper’ rootstocks induced a lower vigor while ‘Cs 1’ and ‘Apricor’ have induced a higher vigor to the grafted cultivars.
Among rootstocks, ‘Galbior’ and ‘Apricor’ have improved productivity to cultivars grafted them.

II EUFRIN Plum and Prune Working Group Meeting on Present Constraints of Plum Growing in Europe

A. Indreiaş, V.A. Opriţa, G. Lamureanu, I. Caplan

Prunus sp., interspecific hybrids, rootstock-scion combinations, growth, yield

https://doi.org/10.17660/ActaHortic.2012.968.20