Study on Grafting Techniques for Armeniaca sibirica ‘Pink Flower’

Previous year′s twigs of Armeniaca sibirica ‘Pink Flower’ as scions and one year seedlings of common Armeniaca sibirica as rootstocks were chosen to study the grafting survival rate with the orthogonal test of four factors at three different levels in Armeniaca sibirica ‘Pink Flower’. The results indicated that grafting method was the most important factor on grafting survival rate of Armeniaca sibirica ‘Pink Flower’, followed by grafting time and treating scions mode, and rootstock′s diameter had the least impact. Furthermore, the rootstock′s diameter had significant positive correlation with new branch growth. To reach 90% or higher survival rate, the scions with apical buds or the top waxed grafted onto the rootstocks with diameter larger than 07cm when the rootstock sap begins to flow and prior to the buds starting to swell were the key factors by using side grafting or cleft grafting.