ISHS Acta Horticulturae 484: Eucarpia Symposium on Fruit Breeding and Genetics
GENETIC CONTROL AND PROMISING SOURCES OF SOME AGRONOMIC CHARACTERS IN APRICOT BREEDING |
| Author: | A. Sychov |
| Keywords: | hardiness, inheritance, interspecific hybrids |
| Abstract:
Apricot breeding in south-east Ukraine started in 1950. About 500 cultivars of different eco-geographical groups and interspecific hybrids were investigated and selected ones used as parents. The sources of some agronomic characters were chosen, among them tree and flower hardiness, spur type precocity, very early and very late ripening, and size, colour and flavour of the fruit. Inheritance studies allowed some preliminary conclusions regarding genetic control to be drawn. The following apricot characters apparently are regulated by single genes: fruit flesh colour (dominant white, recessive yellow or orange), kernel flavour (dominant sweet, recessive bitter), fruit stone adhesion (dominant freestone, recessive clingstone), and skin hairiness (dominant hairy, recessive glabrous). Selection D-22-13 is apparently the source of a gene providing reduced vigour, spur type and excellent precocity. Fruit size and flavour, ripening season and tree and flower hardiness are controlled quantitatively. | |
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