蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
在叶鞘裹住的幼叶下部呈现螺旋状。
A spiral deformation occured in the lower part of the young leaf enclosed in the sheath.
目的建立野葛幼叶细胞悬浮培养体系。
Object To establish cell suspension culture system in leaves of seedling of Pueraria lobata Willd.
幼叶橙红色，成熟叶深绿色；
生长素主要是从旺盛生长新梢上正在发育的幼叶产生出来。
Auxins are produced mainly by young developing leaves on actively growing shoots.
试验结果表明：幼叶与茎尖是蝴蝶兰原球茎诱导的较佳外植体；
The results showed that young leaves and shoot-tips are the best explants for PLB induction.
幼叶细胞高尔基体发达，高尔基小泡及核糖体多沿液泡周围分布。
Golgi bodies in young leaf cells are well developed and the golgi vesicles and ribosomes are generally located around the vacuoles.
TLC分析结果表明：嫩叶红幼叶与花的红色素含有相同的颜色成分。
TLC analysis result showed that red pigment in young leaves and flowers of Nenyehong had almost the same color component.
采用幼叶压片法对‘重瓣玫瑰’和‘苦水玫瑰’两个玫瑰品种进行了染色体核型分析。
Chromosome karyotypes of Rosa rugosa Plena and Rosa rugosa Kushui were studied by the stem-tips squashed method.
幼叶中层既可由亚边缘原始细胞或远轴层叶肉的第一个细胞单独产生，也可由它们二者共同产生。
The middle layer of laminae is brought about either by submarginal initials of by the first cell of the abaxial layer of mesophyll alone or by both of them .
单位叶面积的叶绿素素含量在幼叶和老叶较低而成熟叶中较高，类胡萝卜素随着叶龄的增加而增加。
Chlorophyll contents were less in young and old leaves than in mature leaves, while carotenoids were increased with leaf age.
对照植株幼叶、功能叶和老叶的光合诱导速率相差不大，幼叶和功能叶光合诱导后期受气孔限制的影响。
The photosynthetic induction rates were similar in the different age leaves of the control plants, and there was stomatal limitation in the late stage of in.
在幼叶、成叶和树皮中重度遮荫的TSB活性大于轻度遮荫的，在根中则是轻度遮荫的大于重度遮荫的。
In young leaves, mature leaves and bark, TSB activity of heavy shading was higher than that of light shading, however, in root, a reverse result was showed.
TDC在幼叶中的活性最高，其次依次为成叶、根和树皮。(3)在遮荫处理过程中，TSB活性先下降后上升。
TDC activity was highest in young leaves, the following were mature leaves, root and bark sequently. (3) During the period of shading, TSB activity firstly decreased, and then increased.
它们将卵产在树叶表面，然后孵化的幼蛙被雨水冲刷或直接掉落到叶下面的水中。
Eggs are laid on leaf surfaces and when hatched the larvae are washed off or fall into water below.
野牛草组织培养的外植体有幼苗片段、叶基、雄花幼穗和成熟胚等。
In Buffallograss tissue culture, seedling segment, leaf base, mature embryo and immature male inflorescences can be used as explant.
桑细菌性疫病是危害桑树幼枝、叶的一种主要病害，在我国蚕区普遍发生且危害较严重。
Mulberry bacterial disease is the major and serious disease that does harm to the twigs and leaves of mulberry, and is widespread in sericultural areas.
桑细菌性疫病是危害桑树幼枝、叶的一种主要病害，在我国蚕区普遍发生且危害较严重。
Mulberry bacterial disease is the major and serious disease that does harm to the twigs and leaves of mulberry, and is widespread in sericultural areas.
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