Articles
THE PRESENT SITUATION OF ROOTSTOCK STUDY FOR APRICOTS IN CZECHOSLOVAKIA
At present the total number of trees amounts 2,450,000 pieces.
In the years when apricots are not damaged by frost the anual production is only 40,000 tons.
Out of the observation of the number of trees and out of the reached yields it is obvious, that the reached results have not been fully succesful.
There is a number of aspects heavy influencing a profitableness of cultivation where the apricots have any comercial significance.
One of the most important is a choice of the most available rootstocks.
This basic problem has not yet been solved and that is why it is a subject of a series of trials and it is given the main attention out of all the problems of apricot cultivation in Czechoslovakia.
Generally speaking, mostly generative propagated rootstocks are used for apricots.
It means they are propagated by seeds of the most different and of unknown origin.
The rootstocks propagated in a vegetative way are used in a far lower degree.
To name the generative rootstocks are Prunus Myrobalan, Prunus domestica and various local types of Prunus genus it is f.e Prunus insititia rubra at s.o. and mostly seedlings of cultivated varieties.
It is believable that progeny of these seedlings has a different vitality and affinity, which occurs namely in fruitfulness, vitality and in liability to diseases – apoplexy and virus disease.
A great part of seeds of cultivated varieties has been gained by taking seeds from processing where the embryos can be