营养细胞

Above results suggest that the nuclear genes controlling amyloplast development may express in the uninuclear microspore and continue to be active in the VC, while the genes controlling plastid dedifferentiation may be promoted in the GC after the first mitotic division.

以上结果表明可能控制造粉质体的核基因在单核小孢子中表达并继续在营养细胞中起作用，而控制质体脱分化的基因在第一次有丝分裂后才在生殖细胞中被启动。

Trochoidea vegetative population. Cysts were monthly collected by sediment traps and TFO gravity corer. S. trochoidea vegetative cells, water temperature, salinity, dissolved oxygen were measured throughout the annual cycle.

为了解该藻孢囊形成和萌发动态及其对营养细胞种群动态的影响，2001年1月—2002年1月在大亚湾澳头海域用沉积物捕捉器及TFO重力采泥器对其孢囊进行每月一次的周年监测，同时对浮游植物、水温、盐度、溶解氧等也进行了监测。

The results indicatethat the expression of Cyt1A alone could result in the cytolysis of host bacterial cells,and both P20 and Cry11A could prevent bacterial cells from cytolysing caused byCyt1A protein.

为了进一步探讨P19和P20对Cry11A和Cyt1A相互作用的影响，本研究构建了表达P19、P20、Cry11A和Cyt1A不同组合的七个Bt重组菌株，分别从目的蛋白表达、营养细胞生长、芽胞和晶体形成、杀虫毒力等方面进行了研究。

In diatoms the vegetative cells are diploid, and are formed directly by the fusion of gametes.

硅藻类的营养细胞是二倍体，它是由配子融合直接产生的。

Our study proved that there is a polysaccharide wall between the GC and VC in the comparatively long period of development of the male gametophyte.

本研究证明，在玉竹雄配子体发育的较长一段时间内生殖细胞具一多糖性质的壁与营养细胞分隔。

In these fragments, both the resting and the vegetative cell macronucleus DNA had 18 and 44 specific fragments, respectively.

在所选用的32条随机引物中，线粒体DNA共扩增出154条片段，其中以休眠细胞线粒体DNA为模板扩增出19条特有片段，以营养细胞线粒体DNA为模板扩增出25条特有片段，两者有29％的差异。

By us ing cryo-immunoelectron microscopy,DNA in vegetative cells of Nostoc flagelli forme was detected for the first time and nucleus area at the center of cells could be positioned.

此外，应用高压冷冻和冷冻置换的免疫标记电镜技术，首次对发菜营养细胞中的DNA进行定位，明确了核区的位置及范围。

The ultrastructure of vegetative cells of Nostoc flagelliforme in c ryosection without chemical fixation and dehydration reflected its living state better than that of sample prepared with chemical fixation and dehydration.

其中，发菜营养细胞的冷冻超薄切片所显示的超微结构更客观地反映了生物样品的自然生理状态。

It was proved by ultrastructure observations that male plastid excluded during microspore mitosis.

超微结构的研究证明了菜豆雄性质体在小孢子分裂时被排除，质体全部分布在营养细胞中，初形成的生殖细胞已不含质体。

It is suggested that the product of tapetum degeneration may be absorbed by developing pollen. The special ultrastructural pattern at aperture of pollen represent a morphological adaptation to this short—way transportation of nutrition from the tapetum to pollen.

研究证明在绒毡层的降解和花粉内贮藏物的增加之间存在相关性，这说明绒毡层的降解产物可能被正在发育的花粉所吸收，而天竺葵花粉营养细胞所具有的典型的传递细胞的特点是这种吸收活动在形态上的表现。

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。