根的生长

The effects of light, agar and carbon sources on the growth of in vitro cultured root tips of Fraxinus mandshurica were studied.

研究了光照有无、琼脂添加与否和不同碳源对离体培养的水曲柳根尖生长的影响。

We also inoculated cottonwood clone 895 with 6 ectomycorrhizal fungi. It was found that Xerocomus chrysenteron, Lactarius insulsus and Boletus edulis accelerated seedlings generation from cuttings of clone 895 more than the other fungi did, and they remarkably promoted seedling growth comparing with the control. Lactarius insulsus promoted above-ground biomass and root system most effectively.

接种南林－895杨的6种菌根真菌中，红绒盖牛肝菌、劣味乳菇、美味牛肝菌可促进南林－895杨扦插苗提早萌芽，处理120 d后能显著促进南林－895杨苗的生长，与对照比较差异显著，其中劣味乳菇对杨苗生物量影响最大，其接种试验苗根系最为发达。

The results shows: AM fungi colonization is different in the different Pueraria and changes by the lobata's grow.

调查结果初步表明：不同品种间葛藤根区AM真菌定殖率不同，且随植物的生长周期呈现不同的变化趋势。

We also investigated the effects of competition on the growth and biomass allocation of floating-leaved plants Nymphoides peltata using microcosm system.

通过微宇宙系统对不同类型的竞争对浮叶根生植物-荇菜的生长和生物量分配等进行了研究。

The effects of copper sulphate, lead acetate, zinc sulphate, cadmium chloride and neckel chloride on growth and root tip cell divition of Cucumis sativus seedlings were studied respectively.

选用黄瓜籽苗为材料，硫酸铜，醋酸铅、硫酸锌、氯化镉和氯化镍为化学处理试剂，研究它们对黄瓜籽苗的生长及其根尖细胞有丝分裂的影响。

Beets are a tasty root vegetable that do not require much work to grow.

甜菜根是一种美味的蔬菜，它的生长条件不苛刻。

Crispa. The influences of cytokinins on callus growth were related to explants.

细胞分裂素对朱砂根的愈伤组织生长的影响与外植体有关。

And if was thought because of long time environmental evolution,some very salt-tolerant halophytes grew better in optimal salt environment and grew badly in no salt and high salt environment.

在100 mmol·L~(-1)NaCl处理时，两种盐生植物幼苗的胚根和幼芽长度都达到最大值，幼苗的生长状况也最好。

Hypha and arbuscular colonization have same orders in the two breeds, fastigium occurred in summer and low occurred in late spring and early summer, spore peak produced in summer in the Rhizospere of Puerraria lobata. Spore density had positive correlation with abuscular colonization, the minimum value appears in the winter, and the maximum appears in the summer; consist with the growth prosperous of lobata.

菌丝与丛枝定殖率在两品种间变化规律基本一致，高峰期都出现在冬季，低峰期则出现在春末夏初，夏季为葛藤根区AM 真菌的产孢高峰期，孢子密度与丛枝定殖率呈正相关，最低值出现在冬季，最高值出现在夏季，与葛藤的生长旺季相一致。

The application of root cutting in winter wheat cultivation practice.

研究结果表明，断根可以促进小麦的生长发育，提高肥料利用率，增加产量，改善品质；并可在不降低产量的条件下，减少肥料投入，保护生态环境。

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。