芥菜型多室与二室油菜花芽分化过程的比较分析

李新,肖麓,李麟芳,杜德志

Comparative analysis on flower bud differentiation of multilocular and bilocular traits in Brassica juncea

Xin LI,Lu XIAO,Lin-Fang LI,De-Zhi DU

图1 芥菜型二室油菜花芽分化进程图 a: 生长锥伸长, 茎顶端分生组织(SAM)、叶原基(L); 图b: 花原基出现, 茎顶端分生组织(SAM)、花原基(f1~f6); 图c~图e: 花原基不断分化膨大, 茎顶端分生组织(SAM)、花原基(f)、花顶端分生组织(FM)、萼片原基(S); 图f: 花萼原基分化, 花顶端分生组织(FM)、萼片原基(S1~S4); 图g: 花萼(S1~S4), 包裹花顶端; 图h: 花瓣原基分化, 花瓣原基(P)、雄蕊原基(St1~St6)和心皮原基(C1, C2)分化; 图i~图k: 子房腔(OV)的形成及花柱伸长; 图l: 柱头(箭头所指)形成。

Fig. 1 Flowering bud differentiation of bilocular B. juncea Fig. a: growth cone elongation, showing shoot apical meristem (SAM) and leaf primordial (L); Fig. b: flower primordia appear, showing shoot apical meristem (SAM) and flower primordia (f1-f6); Figs. c-e: continuously differentiated and expanded flower primordia, showing shoot apical meristem (SAM), flower primordia (f), flower meristem (FM) and sepal primordia (S); Fig. f: sepal primordia differentiation, showing flower meristem (FM) and sepal primordia (S1-S4); Fig. g: the top of flower wrapped by sepal primordia (S1-S4); Fig. h: petal primordia differentiation, showing petal primordia (P), stamen primordia (St1-St6) and carpel primordia (C1, C2); Figs. i-k: ovary(OV) formation and stigma elongation; Fig. l: the stigma formation (indicated by the arrow).