There was no significant difference in LL/LW, P/S, epidermal thickness and stomatal density along the elevation gradient.
叶长宽比、P/S的比值、表皮厚度与气孔器密度无明显差异。
Conversely, when atmospheric carbon dioxide is low, stomatal density tends to increase - it's like getting more mouths to breathe with.
相反，当大气二氧化碳浓度低时，气孔密度似乎增加了——就像长出更多的嘴来呼吸。
The number of chloroplast and chlorophyll content in the dodecaploid are more than hexaploid, stomatal density are lower than hexaploid.
同时，十二倍体较六倍体的叶绿体数目明显增多，叶绿素含量提高，但气孔密度减小。
The results showed that stomatal density of flag leaves has significant difference among types and varieties, which is a character of variety.
研究结果发现，剑叶的气孔密度在水稻类型间和品种间具有明显差异，是一个品种特性。
Loss of DST function increases stomatal closure and reduces stomatal density, consequently resulting in enhanced drought and salt tolerance in rice.
DST功能丧失之后会使气孔关闭增加和气孔密度减小，从而提高水稻的耐旱性和耐盐性。
The results showed that stomatal density of soybean leaves increased, stomatal apertura and relative stomatal area per leave area decreased under water stress.
结果表明：经水分胁迫的大豆叶片气孔密度增加，气孔开口大小和单位叶面积气孔相对面积减小。
With the increase of chromosome ploidy, the size of stomatal guard cells and the chloroplastid Numbers were increased, accompanied by the decrement of stomatal density.
染色体倍性提高，气孔保卫细胞的大小及其中叶绿粒数目增加，而气孔器密度减小。
Therefore, it is proposed that stoma density and stomatal conductance of the lower leaves on tobacco plant be used as a selection marker for disease-resistance breeding.
因此，下部叶气孔密度和气孔导度可以作为抗病育种的选择指标。
Using the Improved Scrape-making Method, studies were made on the stomatal distribution and its density in rice leaves.
用改良刮制法研究了水稻叶片的气孔分布与气孔密度。
The stomatal size , density and index were measured and counted .
统计并测量叶表皮气孔大小、气孔密度及气孔指数。
The stomatal size , density and index were measured and counted .
统计并测量叶表皮气孔大小、气孔密度及气孔指数。
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