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.

辞典例句

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.

辞典例句

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%.

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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.

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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.

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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.

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