花粉粒

玉米花粉粒直接PCR技术研究

The Studies on Direct PCR using Maize Pollen Grain Suspensions

采用花粉粒染色法对转Bt基因棉的花粉漂移距离和强度进行了观测，并应用PCR法检测转Bt基因棉的基因流频率。

By the methods of pollen grain dyeing and PCR analysis , this paper measured the distance and intensity of pollen dispersal , and determined the frequency of gene flow ( FGF ) of transgenic Bt cotton .

K型小麦花粉粒内壁及ATP酶活性与雄性不育的相关性

Studies on correlation between intine and K-Type cytoplasmic male sterility in wheat

高水平的ZT/IAA有利于大孢子母细胞和花粉粒的形成，而大孢子四分体的形成则需要高的GA3/ZT比值。

It appears however that the formation of megaspore tetrad associated with the high GA3 / ZT ratio .

经染色体加倍处理所获得的2n花粉粒，体积明显比正常的花粉粒大，并将激光扫描共聚焦显微镜用于大花粉粒的倍性鉴定。

The volume of large pollen obtained from the experiment is larger than the normal one .

活体原位萌发在授粉1h后极个别的花粉粒开始萌发，4h后柱头上的花粉粒全部萌发。

At 4 hour after pollination of in situ pollen germination , all of the pollen grains on stigma were germination .

孢子体SI中的花粉粒被柱头上细胞酶解而水合，这一步可以被抑制，因此可以通过并不充分的水合阻止花粉萌发。

Pollen grains in sporophytic SI hydrate by enzymic breakdown of cells on the stigma surface and this stage may be inhibited , so that pollen germination is stopped through insufficient hydration .

其中还利用TTC染色法测定成熟花粉粒的活性，电镜扫描法观察了花粉粒的外观结构和花粉萌发。

It also determined the mature pollen activity by TTC staining , observed by scanning electron microscopy appearance of the structure of pollen and pollen germination .

并且发现单株的花粉粒活性与加倍花粉母细胞的比率呈高度正相关，加倍PMC越多，单株的花粉粒活性越好。

The pollen activity of a sole plant is highly positive correlated with the frequency of double PMCs , the more double PMCs , the better activity of pollen .

杀雄剂SQ-1诱导小麦雄性不育花粉粒差异蛋白质组学研究

Differential Proteomic Studies on Pollen Grain Proteins of Wheat Male Sterile Line Induced by Chemical Hybridizing Agent SQ-1

单核花粉粒在一昼夜中的发生频率与花药长短有关，3～4mm的高于4～5mm的；

The freguency of monocyte pollen grain in a day and night has relation to the length of anther , it 's 3 ~ 4mm > 4 ~+ 5mm .

花芽分化期处理后发现大部分~（14）C-B9踪迹进入花粉粒内。

The experimental results obtained in the flower differentiation stage showed that the ~ ( 14 ) C-B_9 entered the interior of the pollen grain .

而雄性不育材料1A的成熟花粉粒形状不规则，空瘪，有部分花粉粒解体，败育比较彻底，说明该雄性不育材料在辣椒育种工作中有较高的利用价值。

The pollen grains of male sterility line 1A were irregular in shape , hollow and wrinkled , and some of them broke down and completely aborted , which indicated the line was of high value in pepper breeding .

结果表明，敖汉苜蓿在人工授粉10min后花粉粒的内壁穿过外壁的萌发孔向外突出，20min时形成花粉管，1h后花粉管触及柱头，而后沿花柱道伸长。

The result showed that internal wall of pollen passes through the germination aperture in the external wall and protruded in 10 minutes of artificial pollination . After 20 minutes a pollen tube forms .

当花粉粒在培养基上萌发120min后，野生型花粉的萌发率几乎为100%，而（-）12株系的仅为20%。

After 120 min , the proportion of germinated pollen grains in WT was nearly 100 % , compared to only 20 % in ( - ) 12 line .

稗草自花授粉后花粉粒萌发生长正常，在30min时85%的花粉粒花粉管穿过柱头，正在凝缩和释放内容物或内容物已经释放的花粉粒百分率逐渐增加；

Pollen grains germinated and pollen tubes penetrated stigmas normally , and the number of pollen grains being condensing or releasing their inclusions or having released them increased with the time after self pollination during experimental period .

在人工授粉后24小时内4个品种的柱头形态和黏着的花粉粒数量会有一些变化，Nonpareil和Monterey柱头乳突细胞保持饱满状态的时间较长，且黏着的花粉粒数量也相对较多。

The morphology of stigma and quantity of pollens on it would change in 24 hours after pollination . Cells of stigma of Nonpareil and Monterey would keep plump for long time , and the quantity of pollens on stigma of those two cultivars are more than others .

成熟花粉粒为2-细胞型，少数为3-细胞型。

Mature microspore was two-cell type and minority was three-cell type .

小孢子经两次有丝分裂发育成三核型花粉粒；

The microspore undergoes two mitosis to form 3-celled pollen grains .

利用苹果花粉粒形态进行倍性鉴定

Identification of Ploidy Level by Pollen Shape and Size in Apple

常用花类中药花粉粒的鉴别

Identification of crude drug pollen particle in common Chinese herbal flowers

山茶属植物花粉粒生殖细胞形态研究

Morphological Studies on Generative Cells in Pollen Grains of Genus Camellia

茌梨花粉粒内的生殖细胞是在花粉管中分裂为两个精子。

In pollen tube , the generative cell divides into two sperms .

花粉粒和雌蕊都具有活力。

Both the pollen grains and the gynoecia are active .

落葵的花粉粒和胚囊的形成与发育

Formation and development of pollen grain and embryo sac of Basella rubra

成熟花粉粒中多糖和蛋白质并存。

The polysaccharoses present in the mature pollen grain accompary with proteins .

胚性花粉粒是由营养核的重复分裂形成的。

Embryogenic pollen was formed by repeated divisions of the vegetative nucleus .

由此可见，花粉粒表面性状特征主要是由遗传基因所决定的。

Pollen morphological characteristics were mainly determined by genetic factors .

成熟花粉粒为2细胞型，具3萌发孔；

The mature pollen grain with 3 germinal pores is 2-cell type .

甜菜花粉粒大小及其种株特性的研究

Studies on pollen size and seed plant characteristics of sugarbeet