hypocotyl

Among cotyledon , petiole of cotyledon, hypocotyl, and radicle, hypocotyl has the most responsive explants to 2, 4-D .

在子叶 、 叶柄 、 胚轴以及胚根四者当中, 下胚轴对2, 4-D 的反应状况最好.

At the onset of germination, the hypocotyl elongates rapidly by cell enlargement.

萌发开始时, 下胚轴依靠细胞增大而迅速伸长.

The results shew that hypocotyl's velocity, quality and differentiation were better than other explants.

结果表明:外植体为胚轴出愈速度快 、 质量好且分化率高.

The transformation frequency of flax hypocotyl was about 2 %.

表明它们是转化植株,转化频率约为2%.

As the development of the hypocotyl continues, the characteristic crook in the upper portion becomes apparent.

由于下胚轴继续发音, 上部特有的弯曲变得明显.

When hypocotyl emerges out of the seed coat for 1-2 mm.

当下胚轴穿出种皮约1—2毫米时,生毛细胞的外壁向外突出,形成下胚轴毛.