Acropetal Describing a process(such as growth or development) that progresses from the base or boint of attachment, so t向顶:描述植物器官生长或者发育的一个过程,这个过程是自下而上的,因此较年老的部分在底端,而幼小的部分在顶端。
In the early December, the first bract primordium was formed in the axil scale at the cone base, then bract initiation h12月初,最初的苞片原基在雌球果原基的鳞片的叶腋处产生,之后其由基部向顶部连续发生。