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The application of the structure of leaf epidermis in the classiffication of Ulmus.

叶表皮结构在榆属分类中的应用。

He application of the structure of leaf epidermis in the classiffication of Ulmus.

itle 叶表皮结构在榆属分类中的应用。

The application of the structure of leaf epidermis in the classiffication of Ulmus.

标题 叶表皮结构在榆属分类中的应用。

The callus of Ulmus thomasii was induced to form by using the tip bud, young stem and young leaf as explants.

以顶芽、嫩茎、叶片为外植体，对美国岩榆进行组织培养的初步研究。

The results indicated that the growth of 3-year-old Prunus salicina was significantly higher than that of the other species, such as 139.1% and 153.7% higher than Toona sinensis and Juglans regia in height growth, respectively. The maximum percentage of DBH more than 1.0 cm was 91.9% for P. salicina. Next were 49.5% and 48.8% for Ulmus pumila and Pteroceltis tatarinowii, respectively. The contents of total N, total P and total K ranged from 1.36% to 2.52% in the leaves of testing species. The highest content of total N and total P was found in the leaves of Catalpa bungei, while the highest content of total K was observed in P. saltcina leaves. The results indicated that P. salicina, P. tatarinowii, U. pumila had well adaptability on the Karst area both in the growth status and the improvement to the soil with the fallen leaf.

结果表明：(1)3年生冰脆李的生长量明显优于其他树种，其高生长比香椿、核桃分别大139.1%和153.7%；植株胸径大于等于1.0 cm株数的百分比以冰脆李最高达到91.9%，其次是榆树和青檀，分别是49.5%和48.8%；(2)8个树种落叶的全N、全P和全K的总含量变动为1.36%~2.52%，其中全N、全P含量以滇楸最高，全K含量以冰脆李最大；(3)从各树种落叶前后各元素含量及其转移情况看，冰脆李、青檀表现出对大部分营养元素具有较高的循环利用养分或保持养分的能力，而香椿及刺槐相对较弱。

Petals white; anther connective apically unappendaged; leaf blade margin entire; sepals caducous or decaying after anthesis persistent in N.

花瓣白色花药药隔顶部的无附属物；叶片边缘全缘；萼片早落的或在花后腐坏在N。

A lot of study showed that: the main reason for this was that plantlets grew in the sealed vessel and depend on sugar in the medium, which resulted to poor development of leaf, unflexible open-close of stomata and low chlorophyll content. So, plantlets lose photosynthetic ability.

国内外许多研究报道认为，组培苗生长不够健壮主要原因是组培小植株长期在密闭环境中生长，靠培养基中的糖进行异养，而导致叶片表层结构发育差，气孔开闭功能差，叶片小，叶绿素含量低，最终使小植株丧失了光合作用的能力。

The ash green leaf and stem , long spike and red unfull grain from triticale are expressed in interspecific hybrid F1, which are regard as typical traits of identifying hybrids.

六倍体小黑麦的灰绿色叶片或茎秆、穗长长和红色不饱满的籽粒在杂种F1代显现，可作为鉴别真假杂种的典型性状。

Except 10 mg/L, the leaf area of V. unguiculata seedlings after seed-soaking with other concentrations of triadimefon was significantly decreased and the chlorophyll content was increased with the seed-soaking effect of 30 mg/L being best.

除10mg/L外，经其余浓度三唑酮浸种的豇豆幼苗的叶面积均显著降低，而叶绿素含量均有所提高（以30mg/L的浸种效果最好）。

The results showed that after exposure of germinating seeds to low temperature stress, the germination energy, germination percentage, germination index and seed vigor index in Zhengdan958 soaked with any of chemical regulation treatments under low temperature stress were higher than those of the unsoaked controls; In the meantime, the seedlings height, dry matter weight, leaf area, chlorophyll content of maize seedling under low temperature stress was elevated by A, B two kinds of concentration, indicating positive effect on strengthening maize seedling.

结果表明，低温逆境下各化控处理均提高了郑单958的种子发芽势、发芽率、发芽指数和种子简易活力指数；A、B两种药剂处理比对照都明显提高了低温胁迫下玉米幼苗的苗高、干物重、叶面积以及叶绿素含量，起到了良好的壮苗作用。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。