生根的

Velamen A layer surrounding the aerial roots of epiphytic plants e.g.

根被：附生植物的气生根外层的包被物。

The hydrolysates of five proteins materials,namely fish meal,meat and bone meal,soybean meal,rapeseed meal and wheal gluten meal,were prepared with alcalase and their root-inhibiting activity to Indian dendranthema, Dendranthema indicum Des Moul was measured in Petri dish at different concentrations,i.e.0,0.5,1,2,5 mg/mL.

以鱼粉、肉骨粉、豆粕、菜籽粕及芡粉等几种天然蛋白原料为底物，以碱性蛋白酶为水解酶制备出天然蛋白原料的水解物，用培养皿生物分析法检测不同蛋白原料水解物在不同浓度(0.5、1、2、5 mg/mL)条件下对杂草野菊种子的生根抑制活性。

RDNA-ITS sequence analysis of 30 populations showed that there is difference among M. incognita, M. hapla, M. arenaria, M. javanica, M. panyuensis, M. zhanjiangensis. and M. hainansis, whereas little rDNA-ITS sequence difference among three normal Meloidogyne species.

通过对30个种群的rDNA-ITS序列分析，发现番禺根结线虫、海南根结线虫、北方根结线虫、湛江根结线虫、南方根结线虫、爪哇根结线虫和花生根结线虫种间的DNA-ITS区碱基序列存在差异，但后3种常见种之间差异小。

Key words:Dendrobium candidum; Axenic nodal segments; In vitro propagation; Concentration of hormone; Organic susbstance

方法将铁皮石斛试管苗茎节接种于不同NAA浓度的MS培养基上诱导腋芽萌发，并在含不同激素配比和有机添加物的培养基上继代和诱导生根。

Two lines, 181 and 197, were selected to investigate the root morphology further. It was found that both the lateral and axile roots of 197 decreased drastically with P stress, while those of 181 were not.

比较181和197的根系形态，在低磷胁迫下，磷低效自交系197的初生根侧根长、轴根长均显著下降，磷高效自交系181则下降幅度很小。

Taking leaf and hypocotyl of Limonium bicolor as the explant, the system of rapid propagation were established, the influences of hormone concentration to induce the tissue culture and adventitious buds were studied.

方法］以二色补血草的子叶与胚轴作为外植体，建立快速繁殖体系，研究不同激素浓度对诱导愈伤组织、不定芽以及生根率的影响。

Using a technique of insoluble salt precipitation, the permeability of endodermal Casparian bands for Cu2+ was investigated in primary roots of soybean Glycine max L.

采用在根内生成有色铜沉淀的方法研究大豆初生根凯氏带对铜离子的通透性。

The results showed choosing the diameter as 1.0~2.0cm thick root segment, the length is above 15cm, using 108 Sheng Gen Fen or Du Gen Su to declinate cuttage, the survival rate can reach to 70%,And they can become independent plant.

结果表明：选择直径为1.0~2.0cm粗的根段，长度为15cm以上，使用108生根粉或杜根素药剂处理后，进行斜向扦插，成活率能达到70%以上，并成为独立的植株。

In the generation of a face gear by a shaper, there is the possibility of undercutting in the dedendum area of inner diameter and the pointing of the teeth in the addendun area of outer diameter.

在面齿轮的加工中，面齿轮在内径处易产生根切，而在外径处易产生齿顶变尖现象，因此面齿轮的齿宽受到了限制。

Culms loosely tufted, ascending, rooting at lower nodes, 30–60 cm tall, nodes eglandular.

松弛丛生，上升的秆，在下部节上生根，30-60厘米高，无腺体的节。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。