Propagationin Vitroof Five Apple Scion Cultivars

SummaryShoot apices (5–8 mm long) of five apple scion cultivars were cultured in vitro, when they produced new shoots apparently from lateral meristems. The cultures were multiplied about five-fold every three weeks for 12 months, and 80% or more of the shoots were rooted and 90% or more of the resulting plants were grown-on in pots of soil. This makes possible the rapid production of self-rooted apple trees which could give major economic advantages in modern high-density orchard systems.