生根

Two specieses, Lycoris radiate and Lycoris aurea, were selected for the studying of artificial propagation in vitro. A few specieses of Lycoris, from the southeast area of China and part of locations in Japan, were chosen to research their karyotype differentiation and to measure their genetic diversity by ISSR analysis. The results could be summarized as follows.1. The vegetative propagation conditions of Lycoris aurea and L. radiate in vitro was studied by two-scaling. Different illuminate condition had an effect on the bulblet formation rate. To the species of L. radiate, the rate was higher in the state of 16h 800-12001x illumination than in the darkness. The medium also affected the new bulblet formating rate. When the culture was MS medium 0.2 mg/L NAA 4 mg/L 6-BA, the bulblet formationg rate of L. aurea was 220%;at the same time, when the medium was MS 0.2 mg/L NAA 2 mg/L 6-BA, the rate of L.

本研究选择西南部分地区及日本的几个石蒜品种，从细胞学和DNA分子角度，分析了它们的遗传多样性水平和遗传结构状况，对红花石蒜和忽地笑的离体繁殖技术进行了初步研究，得出如下结论： 1 进行了红花石蒜和黄花石蒜双鳞片快速繁殖条件的研究，结果表明：红花石蒜在16小时800-1200 lx光照下比黑暗条件下出芽率要高；黄花石蒜在MS NAA0.2mg／L 6-BA4mg／L下出芽率为220％，红花石蒜在MS NAA0.2mg／L 6-BA2mg／L下出芽率为108％；NAA比IBA有利于石蒜生根；硅藻土显著提高黄花石蒜双鳞片出芽率，活性炭起抑制作用；6％蔗糖浓度有利于红花石蒜小鳞茎增重，MS 6-BA4mg／L NAA0.5mg／L培养基有利于小鳞茎增殖，切割一刀比两刀有利于小鳞茎增殖。

Just like an excellent work of art, a good advertisement must be rooted in the soil of the national culture so that it will burgeon forth.

而一则好的广告就像一个好的艺术作品一样，必须植根于民族文化的土壤，才能生根发芽。

With age adding, the area ratio of phloem and xylem decreases in Ch.smyrnioides . Differentiation of vascular cambium is active in 3～4 years root.

不同年龄的明党参主根随根龄的增加，韧皮部与木质部的比例减小，维管形成层在三至四年生根中活动最旺盛。

The study was to find the rooting medium suitable for tube seedling of Cannabis Sativa.

［目的］寻找适合大麻试管苗生根的培养基。

Yuanjichangguo Catalpa's endogenous hormones regulated the inter environment and make it more suitable for rooting.

而用ABT1号生根粉处理后插条内部的几个方面均有很好的改善。

And enzymatic defense system of Yuanjichangguo Catalpa is good at defending the environment stress.

生物测定表明金丝楸插条皮部存在生根抑制物质。

The rooting ability of ten varieties of Catalpa spp. was studied. The unlignified branch cutting technique for 'Yuanjichangguo', which was considered as a valuable type to be spread, was analyzed in this paper.

对普通条件下10个楸树不同品种嫩枝扦插的生根能力进行了比较，选择推广价值较高的圆基长果楸进行正交试验以获得圆基长果楸嫩枝扦插繁殖的最优技术方案。

The rooting difficulty of Catalpa bungei was lies in nutrient supply weak, different hormones regulation unsuitable and enzymatic defense system not perfect enough.

楸树扦插生根困难可能在于其营养物质供应较弱、不同激素配合和调控不足、酶促防御系统不够完善。

The optimal combination for Guangye Catalpa is different from Yuanjichangguo Catalpa at using 2000mg/kg ABT1 Powder.

插条营养物质、内源激素和酶促防御系统的动态变化与扦插生根进程密切相关。

But, again good again beautiful flower, just also have appearance in vain, fated, this kind of chervil because the reason of the nature is very difficult rooted like the turnip.

但是，再好再漂亮的花，也只是徒有外表，命中注定，这种山萝卜因为天性的原因是很难像萝卜一样生根的。

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。