查询词典 pollen

Dioecious monoecious, reproductive structures axillary, solitary. Pollen cones pedicellate, globose, with overlapping bracts at base; microsporophylls 6-14, shield-shaped, each with 4-9 radially arranged pollen sacs. Seed-bearing structures subsessile, with several overlapping bracts basically. Ovule erected, entrusted with disc-like embryophore. After fertilization, embryophore developed into fleshy, cup-like and red aril.

雌雄异株，球花单生于叶腋，有短柄；雄球花圆球形，基部覆瓦状排列的苞片，雄蕊6-14枚，盾状，花药4-9丝，辐射状排列；雌球花几乎无柄，基部有多数覆瓦状排列的苞片，胚珠直立，基部托以圆盘状的珠托，受精后珠托发育成肉质、杯状、红色的假种皮。

We produced two groups of pollinating wasps, either carrying pollen or not, and introduced one or two foundress wasps from each group into single figs. Figs entered by no wasps aborted rapidly, but almost all figs entered by wasps completed their development normally, except a few entered by a single pollen-free wasp.

结果发现：没有传粉榕小蜂进入的隐头花序果会很快终止发育并脱落；而在放了传粉榕小蜂的隐头花序果里，除少数几个放一只不带粉的外，隐头花序果基本都能完成其生活史。

Inoculation of leaf on Helminthosporium Maydis Nisk and observation of anther and pollen and fertility restoration-retention identification indicated that JnA should be classified into group S of cytoplamic male sterility. At the same time, fertility observation of F2 and microscopy identification of F1 pollen through I-KI dyeing confirmed this conclusion.

首先对玉米细胞质雄性不育系JnA进行小斑病菌接种鉴定，同时对其花药、花粉形态观察，通过恢保关系鉴定，F2育性分离观察及F1花粉碘液染色镜检，初步确定JnA属于S组细胞质雄性不育。

The results show that the pollen forms of Ferula and Heracleum are prolate and perprolate, respectively, and there are 3 colporates with reticulate sculpture on the pollen exines of the both genuses.

阿魏属和独活属植物的极轴平均长度分别为29.67μ m和34.07μ m，秩和检验表明二者差异显著；赤道轴平均长度17.07μ m和15.65μ m，差异不显著；极轴长/赤道宽的平均值分别为1.76和2.19，差异显著。

Pollen material from dried specimens was obtained from the followng herbaria: ANU, ANUB, N, NAS. Pollen of 111 species representing 12 genera was examined in the light microscope and with the scanning electron microscope.

利用光学显微镜和扫描电镜对蓼科12 属111 种的花粉进行了观察和研究，划分出28 个花粉类型，对每个类型做了精确的描述和评价；提供了每个花粉类型的重要鉴别特征。

1Unequal number of univalents with decreased degree of synapsis and lagging chromosomes occurred in meiosis.The abnormal chromosomal behavior correlated with heterogenicity gave rise to unequal allocation of homogenous chromosomes to daughter cells and resulted in the deletion of functional chromosoms,thus led to the occurence of a certion proportion of aborted pollens.(2)The interaction between genetic imbalance and such environmental factors as temperature,etc.,further drew forth physiological and even structrural imbalance,with abnormal development of pollen mother cells and tapetal cells,and consequently resulted in no or very few production of pollens.The difference in the interaction between environment and genotype reflected on the unstability of pollen abortion in different years.

1在减数分裂中有数目不等的联合程度较差的单价体以及落后染色体出现，这种与异质性相关的染色体行为异常，导致同源染色体向子细胞的不均衡分配，造成具功能染色体的缺失，从而引起毛白杨一定比率的败育花粉的产生；(2)遗传上的不平衡与温度等环境因子相互作用，进一步引发毛白杨生理乃至结构上的不平衡，花粉母细胞和绒毡层细胞发育异常，从而造成不产粉或产粉较少；环境与基因型互作的差异性导致了花粉败育的年度不稳定性。

Experimental results show that the proposed method can be used to prepare high titer and specific rabbit anti-Humulus pollen protein polyclonal antibody. It has similar ability in determining the composition of Humulus pollen allergic protein compared with sera of patients. Therefore, it can be used to immunoscreen cDNA library.

制备的兔抗血清具有较高效价和较好的特异性，应用该血清筛选出的葎草花粉致敏蛋白组分与患者血清筛选的组分相似，因此可进一步应用于初筛cDNA表达文库。

Humulus scandens grass pollen major allergen DNA vaccine pcDNA3.1-LC2 has been successfully constructed. It can be expressed in mice, produces humulus scandens grass pollen allergen specific antibody and has a good immunogenicity.

成功的构建了葎草花粉主要变应原核酸疫苗pcDNA3.1-LC2，pcDNA3.1-LC2可在小鼠体内表达，并能产生葎草花粉变应原特异性抗体，具有良好的免疫原性。

Method］ The process of flower opening and pollen tube germination of Lagerstroemia speciosa was observed and the pollen viability was determined through in vitro germination.［Result］ Sepals of L.

方法］ 观测了大花紫薇花朵的开放过程和花粉管的萌发过程，并采用离体萌发法测定花粉生活力。

The pollen tube enters the female gametophyte from micropylar end and the free nuclei near pollen tube have the average chance to acting as the functional egg.

花粉管从雌配子体的珠孔端进入，珠孔端的游离核行使卵细胞功能的机会是均等的。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。