Project description:in order to understand the role of phloems of apple dwarfing rootstocks,and investigated the expression differences of dwarfing and vigorous apple stocks in the phloem tissue at active growing stage. The phloem tissue at active growing stage(60 DABB(days after buds break) of three apple dwarfing rootstocks including M9,B9,A1d（a partial GA insensitive mutant of Malus hupensis）and two vigorous apple rootstock PYTC ( WT of Malus hupensis) and M. sylvestris were sampled and underwent RNA-Seq analysis.
