胚根

The results showed that the frequency of germination were able to be increased by keeping seed vessel, culturing seeds with radicle up and pre-treating seeds in 5.0mg/L GA3 solution for 12h. The frequency of explant-browning was reduced by adding AC 0.5mg/L to induction media and the vigor of plantlets was promoted by the AC-adding. The propagating coefficient could be improved and the frequency of bud-vitrifration increased by adding 150mg/L coconut water.

结果表明发芽时保留种皮、接种时胚根向上对蚕豆种子的萌发有着至关重要的影响，用5.0mg/L GA3溶液浸种12h有利于种子萌发；培养基中添加0.5g/L AC能有效抑制外植体的褐化，并能使植株生长健壮；培养基中添加150mg/L椰汁能提高繁殖系数，有效抑制玻璃苗的发生。

Investigation of DNA replication levels in primed seeds with flow cytometric determination showed that the 6C:3C ratio in embryonic root tip cells was higher than the unprimed seeds at all stages of seed imbibition.

流式细胞分析仪对引发种子DNA复制水平调查结果表明，SMP处理的种子在种子吸胀的各个阶段，胚根尖中6C与3C的比值都高于对照种子。

Twenty three troublesome weeds and five crops were tested to study specificity of helminthosporin. The result showed that 18 out of the 28 species were susceptible to the toxin. Chenopodium serotinum is the most susceptive, and D. sanguinalis, Polygonum aviculare, Beckmannia syzigachna, Chenopodium album and Alopecurus japonicus took second place.

该毒素在150μg/mL浓度下，对马唐胚根生长抑制率达44.59%；当毒素浓度达到200μg/mL时，叶绿素含量下降18.41%；在500μg/mL浓度下，毒素对供试的23种杂草产生的毒害程度不同，其中小藜对毒素最为敏感，其次为马唐、萹蓄、菵草、藜和日本看麦娘等恶性杂草。

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。

The results showed that the strongest inhibitory activity of Cercospora zeae-maydis toxins were obtained with polar solvent when it was statically cultured in the Fries nutrient fluid for 15ds.

结果表明，Fries培养液中静止培养15d，用极性溶剂提取的玉米灰斑病菌毒素生物活性最好，毒素对玉米胚根生长的抑制作用明显。

The authors investigated antioxidant enzyme system in the radicle of Vicia Faba treated with different concentrations of Se4+.

采用水培方法，研究不同浓度Se4+对蚕豆胚根抗氧化酶系统的影响。

Compared to cw400 and Gongnong2, M. falcata did not show superiority on germination percentage and rate of germination, but the radicle length of M. falcata exhibited good with less effect and insignificant differences between treatments.

与紫花苜蓿cw400及公农2号相比，黄花苜蓿在发芽百分数和发芽指数上没有表现出优势，但是胚根生长几乎不受盐浓度的影响，各个处理与对照间没有显著差异。

Radical leaves with sheath broadened at base; petiole 30--90 cm; leaf blade triangular or triangular-ovate, 5--15(--25)× 3--15 cm, base sagittate to hastate, apex acute to acuminate.

胚根叶具鞘扩大在基部；叶柄30-90厘米；叶片三角形的或三角状卵形， 5-15(-25)* 3-15 厘米，基部箭头形到戟形，先端锐尖或渐尖。

Radical leaves: stipules ovate, herbaceous, adnate to petiole; petiole sheathing at base; leaf blade imparipinnate; leaflets opposite, rarely alternate, broadly elliptic or obovate-oblong; cauline leaves few, with few leaflets, or simple and then margin 3-lobed or 2- or 3-serrate.

胚根叶：托叶卵形，草本，贴生于叶柄；叶柄具鞘的在基部；叶片奇数羽状；小叶对生，很少互生，宽椭圆形或倒卵形长圆形；很少的茎生叶，有很少传单，3浅裂的或单的然后空白边2或3使成锯齿波。

Leaves radical, tufted; peti- ole slender,(2–)4–9(–11) cm; leaf blade orbiculate, orbiculate-elliptic, or ovate, variable even on same plant,(0.5–)1.5–5 ×(0.3–)1.5–5.5 cm, thinly leathery, abaxially pale green, adaxially dark green, base truncate, subcordate, or attenuate and shortly decurrent into petiole, margin apiculately obtuse-serrate, rarely subentire, and often undulate, apex rounded to truncate and sometimes minutely retuse; secondary veins 3 or 4 on each side of midvein.

叶胚根，丛生； peti纤细的ole，(2-)4-9(-11)厘米；叶片圆形，圆形的椭圆形，或卵形，即使在相同的植株上也易变，( 0.5-)1.5-5 *(0.3-)1.5-5.5 厘米，薄革质，背面的苍绿色，正面深绿色，基础截形，近心形，或渐狭和短下延成叶柄，次脉在中脉两边各3或4。

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。