根的生长

An experiment was carried out in the greenhouse using a three-compartment rhizobox system to study effects of inoculation of arbuscular mycorrhizal fungi Glomus etunicatum, Glomus intraradices and Glomus mosseae on Festuca rubra and Agrostis hugoniana, and soil environment. Results indicate that inoculation had significant effects on AM fungi infection of the plants and plant growth, increasing dry matter and P contents of both ground parts and roots and phosphorus absorption rate of the plants, improving microbial flora in the rhizaphere and water stability of soil aggregates.

采用三室隔网装置，就Glomus， etunicatum、intraradices、Glomus mosseae对2种高山草地植物和土壤环境的影响进行了研究结果表明：接种AM真菌对草地植物的侵染和生长均具显著效应，植株地上部、根系干物重以及含磷量、吸磷量均显著高于不接种处理，菌根菌丝对植株吸磷的贡献率达

Different parts of continuous cropping "Gaoyataizi" chrysanthemum, roots, stems, litter, leaves, root exudates and rhizospheric soil were extracted with distilled water separately and bioassayed to detect any possible autotoxic activity.

通过制备菊花'高压太子'叶、茎、枯落物、连作根际土壤、根系及无土栽培收集的根系分泌物的水浸液，进行自身种子萌发及幼苗生长实验、扦插生根及盆栽实验，研究评价不同部位水浸液的自毒作用。

The inhibitory action of Cercospora zeae-maydis toxins which came from different condition of culture and extracting such as different method of culture, kind of nutrient fluid, culture time and extractant on maize radicle growth has been studied..

从液体培养基的种类、培养方式、培养天数、萃取溶剂等方面研究了不同培养条件获得的玉米灰斑病菌毒素对玉米胚根生长的抑制作用。

It is the growth stage of the child, not to drug use, excessive calcium may result in premature epiphyseal calcification, so the children will be the root cause great psychological burden.

孩子正是生长阶段，不要乱用药，过量的补钙，可能会导致骨骺的过早钙化，这样将对孩子造成根大的心理负担。

Cotyledon and hypocotyl ' s rate and quamity are the most among these explams , and callus can be obtained in 10 days by cotyledon and hypocotyl . reversely it is difficult to indue callus with root , and the callus from root is lnde and easy to become browning . the calius obtained from leaf grows very slow and does not become browning uniill in 2 or 3 months

银杏的不同器官和组织都能够诱导出愈伤组织来，其中，子叶和胚轴10d左右全部愈伤化，诱导速度和诱导率均最高，根则很难诱导，愈伤组织很少，褐化很快；叶片诱导的愈伤组织，生长慢，褐化也慢，在培养基上保持两三个月而不褐化；胚乳的诱导时间也较长，需要30d左右。

Objective To gain stable genetic modification of neural stem cells that constitutively secrete brain-derived neurotropic factor and to explore the biological role on the survival and neurite outgrowth of cultured dorsal root ganglion neurons.

目的 建立稳定表达脑源性神经营养因子基因的神经干细胞并观察其对于体外培养的脊髓背根神经节细胞存活及突起生长的影响。

ConclusionThe difference of the main secondary metabolites is determined by the provenances in the root of Rumex gmelini planted in the same growth condition.

结论在同一生长环境下，毛脉酸模根中主要次生代谢产物含量的差异更多的是由其种源所决定的。

Perennial marsh plant having swordlike leaves and aromatic roots.

生长于沼泽地带的一种多年生植物，具有剑状的叶子和带有香味的根。

The results showed that inoculated PSB can improve plant growth and promote plants uptake and utilize more undissolving P. It also decrease pH of the medium and increase microbe population.

研究表明，加入解磷细菌后，对粉煤灰基质有一定的改良作用，促进了植物生长，增加了对粉煤灰中难溶性磷的吸收利用，降低了粉煤灰pH，增加了根际细菌和真菌的数量。

The intermingled roots of two plants growing closely together improve the quality of the soil.

依偎在一起生长的两种植物的根交织在一起，能够改良土壤的质量。

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。