ISHS Acta Horticulturae 488: XI International Symposium on Apricot Culture
CUMULUS OF POSITIVE CHARACTERISTICS OF DIFFERENT APRICOT (PRUNUS ARMENIACA L.) PARENTAL PHENOTYPES AND THE WAY TO TRANSMITING IN APRICOT HYBRIDS DESCENDANTS |
| Authors: | V. Balan, O. Bajan, V. Tudor |
| Keywords: | Prunus armeniaca, donor, descendants, ideotype, cumulating characteristics |
| Abstract:
The aim of this paper is to highlight the positive characteristics of the corelation between productivity and adaptability of some of the apricot donors and F1 and F2 hybrids descendants and finally to contribute to the selection progress. The research protocol is aimed at establishing the apricot ideotype, the links between the parental and hybrid descendants characteristics and the differences between every donor, descendant and the apricot ideotype and at determining by electrophoreses the izosymes bands. Biological material concerned 6 apricot donors, 55 F1 descendants. For this analysis the characteristics of the apricot ideotype were expressed by a score of 125 points /grades: 5 for tree height, 5 winter frost resistance, 5 resistance to the low spring temperature, 20 for resistance to Monilinia laxa Lev. (Aderh), Cytospora cincta Sacc., Stigmina carpophila (Lev.) M. B. Ellis and Plum pox virus, and 90 for the fruit traits quality. From among the donors, Dacia had the 119 points, closest to the ideotype, but none of Dacia descendants scored the same. Even positive transgressions detected in F1 descendants of some donors were not cumulated in the some phenotype. On the first stage the MDH- Malatedehydrogenase isozyme patterns revealed different zones of activity in the eight apricot donors: Favorit, Manitoba, NJA 48, Stella, Dacia, Early Orange, Sony, Kinred. | |
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