Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 1
Written by Larisa-Daniela STRÎMBU (VLAȘIN), Luminița-Antonela ZAGRAI, Zsolt JAKAB-ILYEFALVI, Ioan ZAGRAI, Georgeta Maria GUZU, Mirela Irina CORDEA
Prunus domestica L. is one of the most economically important fruit species in the global plum industry, serving as a key species for both fresh consumption and processed products. In vitro micropropagation is one of the most suitable methods to preserve the valuable cultivars of species. Twenty nine plum cultivars certified at Prebasic category were initiated on Woody Plant Medium (WPM) with benzylaminopurine (BAP) or meta-topolin (mT), to assess their effect on initiation rate. Although the average of both variants showed a similar initiation rate, there were significant differences between some cultivars. During the multiplication stage, the explants from 19 plum cultivars were cultivated on two medium (WPM or Murashige & Skoog) with the same hormones, and the multiplication coefficient (number of proliferated shoots) and regeneration efficiency (proportion of explants developing into healthy plants) were assessed. Results revealed that both indicators proved to be highly variable dependending mainly on cultivar and less of the four culture variants.
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