stem apex中文什么意思

茎尖

• stem:     stem2 vt. (- ...
• apex:    n. (pl. apexes , a ...
• apex:    APEX,Apex ＝ Advanc ...

例句与用法

1. Using " shanghai no . 4 " and " dongcun jiaopei " as donor materials , variants with improved heat tolerance were obtained through treating haploid stem apexes with pingyangmycin and then culturing survived stem apexes with stress of higher temperature
   摘要用平阳霉素对青花菜“上海4号”和“东村交配”的单倍体茎尖进行诱变处理，以高温作为选择压力，获得一批耐热性明显比原始品种提高的单倍体变异体。
2. 7 - 10 days " seedlings after the seeds germinated , the meristem in the stem apex functioned to form true leaf primordium , meanwhile , the vessel elements which differentiated from parenchymatous cells of the middle and upper portion of the cnz connected with the vessel elements from procambium of epcotyl - shoot region
   种子萌发7 - 10天，幼苗的茎端分生组织活动形成真叶雏形，此时由子叶节区中、上部薄壁细胞的转分化形成的导管分子与上胚轴-苗区原形层形成的导管分子发生连接。