title: QZ transcriptome
design: Sample collection  Experiments were conducted at Northwest A & F University, Yangling, China (34◦20’N, 108◦24’ E). Three 6-year- old Malus x prunifolia (Fuping Qiuzi) trees were chosen as materials. Every tree was a biological replicate.   Leaves  Six to ten leaves from the apical bud on the annual branches of 'Golden Delicious' were collected on March 15, 2016. For each replicate, leaves from 8 branches in all directions of one tree were collected. The materials were put into liquid nitrogen quickly and then taken to the lab for RNA extraction.   Stems  Stems from annual branches were collected on March 15, 2016. Eight stems from one tree were taken as a biological replicate. The materials were put into liquid nitrogen quickly and then taken to the lab for RNA extraction.   Flowers  Flowers were collected from annual branches on April 15, 2016. About ten annual branches of one tree were chosen as a biological replicate. All the materials were put in liquid nitrogen quickly and then taken to the lab for RNA extraction.  Roots  Roots were collected from trees on April 15, 2016. About eight directions of one tree were chosen as a biological replicate. All the materials were put in liquid nitrogen quickly and then taken to the lab for RNA extraction.