生根的

Root-lodging grade was significant correlation with height of plant and ear and number of brace root, but non-significant correlation with stem quality properties.

遗传分析表明，株高和穗位主要受基因非加性效应支配，环状气生根的基因加性和非加性效应相当，故对根倒伏的抗性应强调非等位基因的互作，亲本之一必须抗根倒才能有望配成抗根倒的杂交组合。

It turned out reproduction rete of chrysanthemum was raised,the regular,non-plant diseases and insect pests could be offered to the market. Shoot tip were used as explants to study the effects of different sterilization methods, illumination intensity and concentrations of 6-BA and NAA on shoot propagation. Rooting with perlite, vermiculite and river sand instead of agar was studied. In the process of preliminary multiplication, the effect of using 0.1% HgCl_2 in sterilization of explants was better than using saturated bleaching solution. The highest multiplication rate was found under whole illumination. MS media with 6-BA from 0.2 mg·L~(-1) to 5 mg·L~(-1) and NAA from 0.05 mg·L~(-1) to 2 mg·L~(-1) were tested and as a result, the highest differentiation rate and the multiplication rate was reached with 0.2 mg·L~(-1) 6-BA, 0.05 mg·L~(-1) NAA.

本实验以菊花的茎尖为外植体，研究了不同灭菌方法，光照强度，全光照、半光照和弱光处理以及不同6-BA和NAA浓度及配比对于试管苗增殖的影响，并研究了珍珠岩、蛭石和河砂等琼脂替代物对于菊花生根的影响，结果表明：在初代培养物建立的过程中采用0.1％升汞进行表面灭菌的效果好于饱和漂白粉的灭菌效果；在全光照条件下外植体的增殖倍数最高；在试管苗增殖培养的过程中，以MS为基本培养基，并在培养基中添加0.2～5mg·L~(-1)6-BA和0.05～2mg·L~(-1)NAA，其中0.2mg·L~(-1)6-BA和0.05mg·L~(-1)NAA最适于外植体的分化和增殖，其分化率为100％，增殖倍数为12。

It was found that Pelargonium citrosum Vanleenii proliferation period can be prolonged in proper concentration of Ca~(2+).

结果表明：适当提高Ca2+的浓度，可以延长驱蚊香草试管苗的正常增殖生长周期；不同浓度的Ca2+处理对驱蚊香草试管苗增殖的影响要大于对其生根的影响；驱蚊香草试管苗体内Ca2+含量与试验培养基中Ca2+浓度成线性正相关。

After orthogonal test analysis of three factors, three levels and 27 kinds of compositions,the causes of the putridity of the Rugosa rose fresh cuttings were investigated.

通过三因素三水平 2 7种组合的正交试验和分析，认为插穗腐烂病的发生是由于难生根的离体保加利亚玫瑰嫩枝插穗的抗性弱、空气和土壤的高温高湿条件所造成的；分析还表明土壤因素对保加利亚玫瑰嫩枝扦插腐烂病影响最大，其次是插穗因素和浸穗试剂，并据此提出感病率较低的 4种组合类型。

Excellent lichun tomato was selected as transgnic acceptor. Through Kan allergy mensurate of cotyledon callus to establish filtration concentration is 50mg/l, filtration concentration of rootage is 40mg/L.

通过叶片愈伤诱导的卡那霉素敏感性测定，确立了叶片愈伤诱导的卡那霉素的筛选浓度为50mg／L，生根的卡那霉素筛选浓度为40mg／L。

We studied the optimum medium and hormone combination of callus induction from cotyledons, subculture of callus, shoot regeneration from callus, shoot-extension induction, root induction and identified the chromosome number of the plantlet. The results showed that: MS+2,4-D 2.0mg/L+KT 0.5mg/L, MS＋2,4-D 2.5mg/L＋KT 0.5mg/L, MS+2,4-D 0+KT 1.0mg/L, MS+KT 0.5 mg/L and basal MS medium. One plantlet among twenty two was determined as a tetraploidy based on the plant morphology, observation of the leaf stoma and chromosome number of the root, other two plantlets represented morphological variation.

结果表明，诱导章丘大葱子叶产生愈伤组织、愈伤组织的继代培养、愈伤组织芽分化、芽点的伸长及诱导生根的最佳培养基及激素配比分别为：MS+2，4-D 2.0mg/L+KT 0.5mg/L、MS＋2，4-D 2.5mg/L＋KT 0.5mg/L、MS+2，4-D 0+KT 1.0mg/L、MS+KT 0.5mg/L和MS基本培养基；试管苗经驯化移栽后，共有22株成活，成活率为92%，对成活的再生植株进行形态学、叶片气孔及根尖染色体鉴定表明，共有3株发生变异，其中2株为外部形态上的变异，而另一株为染色体的加倍变异。

With the protocorms of C. grandiflorium as inoculated materials and MS as basic medium, different combinations of growth regulating substances with different concentrations and different hormone proportions were designed to discuss the effects of different medium on the protocorm propagation, bud induction and rooting of C. grandiflorium and the effects of different hormone matching on the formation of roots.

方法］以大花蕙兰的原球茎为接种材料，以MS为基本培养基，设计不同生长调节物质浓度的组合、不同激素配比，探讨了不同培养基对大花蕙兰原球茎增殖、诱导芽及生根的影响和不同激素配比对形成根的影响。

Rooted cuttings were allowed to grow in the polybags filled with soil and cow-dung mixed in the ratio of 3:1 for three months to assess the steckling capacity and initial growth performance.

生根的插穗被放在装有土壤和牛粪（体积比3：1的塑料袋中培养3个月，然后评价植株的生长力和初始阶段的生长特性。

The purpose of the paper was to establish the tissue culture and propagation technique system of Malus Teli. The shoot segments of Malus Teli as explants were cultured in vitro with MS culture medium and sterile system was established.

以MS为基本培养基，以观赏性小苹果&特丽&的茎段为外植体，建立了无菌培养体系，研究了不同的激素配比和不同茎段类型对增殖培养的影响以及不同的生长素组合对试管苗生根的影响。

The tissue culture and rapid propagation of Mozzie buster were studied by using tips and leaves as explants.The results showed that: The optimum disinfect time for the explants with Hgcl2 was 5~7 min.

以蚊净香草的叶片和茎段作为外植体，用0.1%的升汞作为消毒剂，通过试验拟找出最佳的消毒时间及适于外植体的诱导、增殖和生根的培养基。

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。