Influence of vineyard peach selections on vigour and initial yield in peach and nectarine

Abstract

Seedlings (progenies) of eight selected vineyard peach genotypes obtained by self and open pollination were examined in this study during three consecutive years. Two progenies from unselected vineyard peach genotypes with different geographic origin were used as a standard. Peach cv. Autumn Glo and nectarine cv. Stark Red Gold were grafted on F1 generation of eight vineyard peach selections and two standard progenies. Analysis of variance indicated statistically significant differences in vigour and fruit productivity between fruit trees grafted on different progenies of vineyard peach selections. A high correlation was found between rootstock vigour and fruit production of grafted cultivars. In addition, the principal component analysis made it possible to establish similar groups of rootstocks, depending on its influence to vigour, productivity and indexes of efficiency of grafted peach and nectarine cultivar. The most promising rootstocks for those two cultivars were PSK and 7S because grafted AG and SRG have high fruit weight, initial yields and very satisfactory rootstock, scion and canopy efficiency.

U radu su ispitivani sejanci (potomstvo) osam selekcionisanih genotipova vinogradske breskve nastali samooplođenjem i slobodnim oplođenjem. Dva potomstva neselekcionisane vinogradske breskve različitog geografskog porekla su predstavljala standard u ogledu. Breskva Autumn Glo i nektarina Stark Red Gold su okalemljene na F1 generaciju osam selekcija vinogradske breskve i dva standardna potomstva. Srednje vrednosti parametara bujnosti i rodnosti stabala kalemljenih na različita potomstva selekcija vinogradske breskve, su se značajno razlikovale. Potvrđeno je postojanje značajne korelacije između bujnosti podloge i rodnosti okalemljenih sorata. Okalemljene sorte su imale umerenu bujnost i najbolje proizvodne rezultate na podlogama selekcija PSK i 7S.