Long-term evaluation of rootstock effects on cropping and tree parameters of selected sweet cherry cultivars

Abstract

The cropping of six sweet cherry cultivars that originated in the Research and Breeding Institute of Pomology at Holovousy, and a standard one, ‘Burlat’, were evaluated on three rootstocks in the period of 2007–2017. Trees planted in a spacing of 1.5 m × 5.0 m were trained as tall spindle axes utilising their natural tendency to develop a central leader. On the standard rootstock, P-TU-2, ‘Tim’ was the most productive with a mean total harvest of 47.6 kg per tree. ‘Sandra’ yielded the most on the PHLC rootstock with 56.2 kg per tree and ‘Helga’ yielded the most on Gisela 5 with a mean total harvest of 55.9 kg per tree. The mean impact of the rootstock on the tree vigour, measured upon the trunk cross section area, ranged from 148.4 cm2 on the standard rootstock P-TU-2 to 114.1 cm2 on the PHLC and 125.2 cm2 on Gisela 5 . On the standard rootstock P-TU-2, the most vigorous one according to this criterion was ‘Jacinta’ (178.0 cm2) whereas ‘Justyna’ (109.7 cm2) was the least vigorous. On the PHLC, the most vigorous was ‘Sandra’ (147.2 cm2) and the least was ‘Amid’ (94.0 cm2). The other tree characteristics were mainly dependant on the cultivar and minimally, or not at all, influenced by the rootstock vigour.

Quantification of dwarfing effect of different rootstocks in ‘Picual’ olive cultivar using UAV-photogrammetry

“…Previous works on olive have also evaluated the dwarfing effect of 'Leccino Dwarf', and genetic variability of this character in olive has been previously reported in 'Arbequina' olive in vase formation when grafted with 18 olive cultivars (Di Vaio et al, 2012;Romero et al, 2014). In relation to canopy dimensions, high variability of tree height and canopy spread due to different rootstocks has been found for'Fuji' and'McIntosh' apple cultivars (Autio et al, 2011) and cherry (Blažková et al, 2020).…”

Uticaj selekcija stepske višnje, Oblačinske višnje i magrive kao podloga za kalemljenje na smanjenje bujnosti i osobine ploda trešnje

“…To ukazuje na va`nost odabira genotipa Obla~inske vi{nje koji ima sposobnost da kontroli{e bujnost plemke, budu}i da je varijabilnost u okviru prirodnih populacija veoma izra`ena. Iako su pojedini autori ustanovili da je vrednost PPPD u korelaciji sa zapreminom krune u razli~itim kombinacijama sorta-podloga (Bla`ková et al, 2020), biljke na razli~itim kandidatima mogu imati sli~ne vrednosti PPPD, a da se njihove krune razlikuju u zapremini. Stoga je pored pre~nika debla po`eljno izra~unati i efektivnu zapreminu krune prema Changok (2007), koja }e odabirom odgovaraju}eg indeksa oblika krune pored radijalnog rasta (izra`enog kroz PPPD) i krajnjih ta~aka rasta (dimenzije krune na tri ose) u ra~unicu uvrstiti i raspored, brojnost i poziciju grana, omo-gu}avaju}i precizniji pristup ra~unanju bujnosti (Narand`i} & Ljubojevi}, 2022) 2022) ustanovili 2. jun kao vreme zrenja sorte Summit tokom perioda 2017 ‡2021.…”