stomata

we researched on the stomatal differentiation, stomatal density and stomatal aging in amaranthus tricolor leaves. result shows that the differentiation of mother cell in protective cell begins from folded leaves that are 13.8 mm long. with the leaves unfolding, stomata are mature and open.

对三色苋叶片气孔的分化、密度、老化等进行了研究，结果表明保卫细胞母细胞的分化始于叶长13.8mm的未展开心叶上，伴随着叶的展开，气孔成熟开孔。

predecessor of aroma was produced in basic parenchyma cells of perianth, transported to epidermis cells through dispersion and then emitted from the intercelluar space, anticlinal wall and stomata of epidermis cells.

白兰花被片挥发性香气的前体物在基本薄壁组织细胞中产生，通过扩散作用输送到表皮细胞，最后通过表皮细胞的垂周壁、表皮细胞的细胞间隙、气孔释放出来。

The opening of stomata seems to be an energy-consuming process.

气孔的开放似乎是一个能量消耗的过程。