The reasons behind the positive role of BAP on multiplication stage might be due to cytokinins great
role in releasing lateral buds from the dominance of terminal buds without need to remove the apical
bud by promoting the formation of xylem tissues of buds which will facilitate the transformation of
water and nutrients leading to lateral bud growth (Mohammed and Al-Younis, 1991) as well as, the
important role of cytokinins in increasing the synthesis of RNA, proteins and enzymes inside the cell
which enhance bud growth as well (Al-Rifae’e and Al-Shobaki, 2002; Toma and Rasheed, 2012).