ISHS Acta Horticulturae 538: Eucarpia symposium on Fruit Breeding and Genetics
BREEDING FOR VERY EARLY AND VERY LATE RIPENING APRICOTS |
| Authors: | E. Tzoneva, R. Tzonev |
| Keywords: | intraspecific crosses, P. armeniaca |
| DOI: | 10.17660/ActaHortic.2000.538.75 |
| Abstract:
Among the main objectives of the apricot breeding programme in Bulgaria since 1988 are obtaining new cultivars which possess very early or very late ripening, large and attractive fruit with high eating quality, good fruitfulness, cold resistance, late blooming, and high chilling requirements. The seeds of a total number of 22 open pollinated cultivars with early or late ripening characteristics were collected in 1989 and 1990. Ten intraspecific crosses among 14 cultivars were made. Their seedlings were planted in the selection orchard in 1992 and 1993. The investigations on biological and pomological characteristics of the populations - a total number of 887 hybrids were carried out in 1996-1998. The term of ripening, fruitfulness and fruit size of several very early and very late ripening selections are given on this paper. Four hybrids that ripen 16-18 days before the control, one late ripening seedling and one extremely late hybrid, 50-60 days after the standard have been evaluated. All the very early ripening selections possess good fruitfulness, three also have large fruit. The hybrid IX.3.92. ripens very early, has good fruitfulness, large, attractive, bicolour, and has good tasting fruit. The very early ripening seedling XXV.70.93. also has glabrous fruit. The late ripening selection XIV.86.93. has a large, attractive, bicoloured fruit, stable dormancy and late blooming. The extremely late ripening seedling XIV.5.93. ripens 155-160 days after the bloom. | |
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