易变

Researches for 32 years (1973-2004) conducted in Longnan, one region in China where wheat stripe-rust strain is labile, have shown that most wheat cultivars lost their resistance to stripe rust after 3-8 years, while Libellula and N.

在我国小麦条锈病常发易变区陇南地区，从1973年起对里勃留拉、N。斯特拉姆潘列、成农4号、清农1号、中梁5号和清农3号6个品种抗杀锈病的持久性进行了鉴定与分析。

Basal leaves 2-6, long petiolate; stipules over 1/2 adnate to petioles, broadly lanceolate, membranous, margin sparsely denticulate and ciliate or entire, apex acuminate; petioles 3-9 cm at anthesis, usually green, sometimes purplish, glabrous, nitid, elongated at fruiting to more than 20 cm; leaf blade glabrous on both surfaces or pubescent along veins, 3-sect, segments shortly stipitate, lateral segments deeply 2-fid, central segment deeply 2- or 3-fid, terminal lobes highly variable in shape and size, ovate-lanceolate, lanceolate, oblong, or linear-lanceolate, margin irregularly dentate or shallowly divided, sometimes triparted to pinnatiparted or 3-lobed, apex obtuse or acute.

基生叶2-6，具长叶柄；托叶超过1/2的贴生至叶柄，宽披针形，膜，边缘疏生细齿和具缘毛或全缘，先端渐尖；叶柄3-9厘米在花期，通常绿色，有时略带紫色，无毛，有光泽的，在果期拉长到超过20厘米；叶片两面无毛沿脉具短柔毛，3全裂，裂片具短柄，侧裂片2深裂，中裂片2或3深裂，顶裂片形状和大小极易变，卵状披针形，披针形，长圆形，或线状披针形，边缘不规则牙齿或浅裂，有时3深裂到羽状深裂或3浅裂，先端钝或锐尖。

Leaves radical, tufted; peti- ole slender,(2–)4–9(–11) cm; leaf blade orbiculate, orbiculate-elliptic, or ovate, variable even on same plant,(0.5–)1.5–5 ×(0.3–)1.5–5.5 cm, thinly leathery, abaxially pale green, adaxially dark green, base truncate, subcordate, or attenuate and shortly decurrent into petiole, margin apiculately obtuse-serrate, rarely subentire, and often undulate, apex rounded to truncate and sometimes minutely retuse; secondary veins 3 or 4 on each side of midvein.

叶胚根，丛生； peti纤细的ole，(2-)4-9(-11)厘米；叶片圆形，圆形的椭圆形，或卵形，即使在相同的植株上也易变，( 0.5-)1.5-5 *(0.3-)1.5-5.5 厘米，薄革质，背面的苍绿色，正面深绿色，基础截形，近心形，或渐狭和短下延成叶柄，次脉在中脉两边各3或4。

Changeable Moody Overemotional Touchy Clinging and Unable to let go.

缺点：易变，喜怒无常，太情绪化，遇事敏感，不能自立，心事重重。

Changeable Moody Overemotional Touchy Clinging and Unable to let go.

缺点：性情易变，喜怒无常，太情绪化，遇事敏感，不能自立，心事重重。

In areas of variable permafrost(i.e., permafrost that may occasionally melt and refreeze), pipelines are often installed above ground, along with special construction of support members to prevent heat transfer to the soil.

在易变的永冻土(即，也许偶尔地熔化和重新冷冻)的永冻土区域，管道在地面之上经常被安装，与支持成员的特用型式一起防止热传递到土壤。

Chinensis included large parenchymatous cells at the vascular bundles, whereas no such cells were observed at the vascular bundles of A. saponaria and A. greenii .

木立芦荟、中华芦荟、易变芦荟和库拉索芦荟的维管束中有大型薄壁细胞，皂叶芦荟和绿芦荟的维管束中无大型薄壁细胞。

Culm sheaths variable in color, densely glaucous, sparsely setose, nearly glabrous on small culms or at culm apex, margins ciliate; auricles falcate, small; oral setae radiate, 4–6 mm; ligule prominent, short, ciliolate; blade green, triangular, lanceolate, or narrowly lanceolate, setulose.

在颜色，密被白霜，稀疏刚毛里易变，在小的秆上近无毛或者在秆顶，边缘具缘毛的竿箨；叶耳镰刀形，小；口头的刚毛散发出，4-6毫米；叶舌突出，短，具短缘毛；给绿色装叶片，三角形，披针形，狭披针形的或，。

A very variable species: specimens occur with spinescent or obtuse leaf apices and with or without white stomatal bands on the adaxial leaf surface.

一非常易变的种：标本发生具具刺或钝叶尖并且有或没有白色气孔带在叶正面上。

The remaining three species are much more difficult, at least from herbarium material, as staminate flowers seem to offer no useful characters; leaves on flowering specimens are often young, and therefore, generally small, and in all three species the leaf shape and size is variable, with character states overlapping between the species.

Flacourtia mollis的年轻的果可以被它的叶毛被认出，剩下的3 种更难分，至少从标本馆的标本上看如此，因为雄花好像没有提供有用的特征；在花标本上的叶经常幼嫩，因此，通常小，在全部3 种中叶的形状和尺寸是易变的，在物种之间具有重叠特征状态。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。