Polupatuljci u subspontanom potomstvu i sinteza patuljastih kultivara crvenog hrasta

Abstract

U radu su izneti osnovni podaci o pojavi polupatuljaka u subspontanom potomstvu severnog crvenog hrasta. Kalemljenjem plemki sa polupatuljastih stabala na podloge srodnih vrsta skraćuje se juvenilna etapa odnosno ubrzava pojava cvetanja, indikuju se samooplodnja i mogućnost ukrštanja u srodstvu. Specifičnost poduhvata zahteva: (1) definisanje tipa željenog kultivara; (2) izradu modela kultivara i (3) određivanje genetičke prirode zamišljenog kultivara. Izgradnja kultivara je u osmišljenom i dugotrajnom delovanju.

The main data on the occurrence of semi-dwarfs in the subspontaneous progeny of American red oak were researched. The grafting of scions from semi-dwarf trees on the stock of related species shortens the juvenile stage, i.e. accelerates the flowering, induces the self-fertilization and potential crossing of related species. The specific undertaking requires to: (1) define the desired type of the dwarf cultivar, (2) develop the model, and (3) plan the genetic nature of the conceived cultivar. The development of cultivars relies on the conceived and long-term activity.