黄瓜矮化突变体营养芽茎尖分生组织分化动态  

Differentiation Dynamic Status of Vegetative Shoot Apical Meristem in Dwarf Cucumber

作　　者：徐庆华[1] 胡宝忠[2] 李凤兰[2] 

机构地区：[1]东北农业大学成栋学院,黑龙江哈尔滨150030 [2]东北农业大学生命科学学院,黑龙江哈尔滨150030

出　　处：《中国蔬菜》2010年第22期28-33,共6页China Vegetables

基　　金：高等学校博士点专项科研基金(200802240008);国家"863"计划项目(2007AA10Z177)

摘　　要：对黄瓜矮化突变体D0462进行了形态学观察和茎尖分化的动态显微观察。结果表明:D0462是多分枝的矮生植株,营养芽常着生于花序轴(簇)之上,营养芽一旦形成都能够伸长形成侧枝,不存在休眠或抑制伸长的现象;茎尖分生组织分化经历初生期、伸长期和结节期,部分结节期茎尖由营养顶端转变为生殖顶端,茎尖分生组织直径/高度的值在3个时期逐渐减小;D0462茎尖分生组织分化进程比普通蔓生黄瓜D9419快,子叶出土后15d茎尖分生组织进入生殖生长阶段。Using dwarf cucumber（Cucumis sativus L.）line D0462 as experiment material, we conducted observation on the morphology of dwarf cucumber mutant D0462 and the microexamination of vegetable shoot apical meristem（SAM）differentiation dynamic status in dwarf cucumber. The result showed that D0462 is multi-branching and short plant, its vegetable shoot usually consolidated on the top of FLOB and could elongate to an axillary branch without dormancy and elongation suppression phenomenon. The differentiation process included vegetative stage,elongate stage, and single ridge stage. The partial SAM in single ridge stage became reproductive from vegetable top. The values of diameter/height gradually went down during the 3 stages. D0462 ripened faster than the sprawl cucumber D9419, and went into reproductive stage on the 15th day after its cotyledon coming out of the earth.

关 键 词：黄瓜矮化突变体 营养芽 茎尖分生组织 分化 

分 类 号：S642.2[农业科学—蔬菜学]