花粉

There was linear correlation between sICAM-1 and tIgE (R-square=0.502,standard partial regression coefficient=0.097,t=2.841,P=0.021 8) with stepwise regression analysis.

结果 血清sICAM-1、sVCAM-1、tIgE水平测定哮喘组均高于对照组(P＜0.01)；血清中以户尘螨和蒿草花粉的特异性IgE含量增高为主；经多元逐步回归分析提示血清总IgE含量与sICAM-1存在线性关系，其复相关平方为0.502，标准偏回归系数为0.097，t＝2.841，P＝

T1 plants on the molecular level, and the phenotype of pollen sterility of observation and analysis.

对T1代植株进行了分子水平，表型及花粉育性的观察与分析。

Wind is ineffective because of the heaviness and stickiness of the pollen.

风是无效的，因为重与粘性的花粉。

The ligand encoded by SCR gene is a small pollen coat protein present on the surface of pollen grains. The receptor localized to the plasma membrane of the stigmatic papillae on the surface of the pistil is encoded by SRK gene.

配体是位于花粉粒表面的一个小的胞被蛋白，由SCR基因编码；受体是位于柱头乳突细胞原生质膜上的跨膜的蛋白质激酶，由SRK基因编码。

Results show stigmatic pollen load of pollinated flower is significantly higher than ovule number/ovary for all the studied plants; pollen grains deposited on stigma are enough to fertilize all of the ovules. Results also seed abortion is common.

虽然花部隔离是不完全和不彻底的，但在维持马先蒿属植物间的生殖隔离和种间特征，尤其是避免普通传粉者所造成的花粉干扰是十分重要的。

On signal transduction of self-incompatibility in Brassica, the signal molecule-SCR ligand is produced by the pollen grain, recognized by SRK receptor in stigmatic papillae, and transduced into a cellular response.

在芸苔属植物的自交不亲和细胞信号转导过程中，信号分子-SCR配体是由花粉粒产生的，被柱头乳突细胞SRK受体识别后，进行细胞内信号转导。

In addition, they have relatively longer flower tubes, higher stigmatic pollen loads, bigger pollen size and a shorter blooming period for individual flowers. Finally, the author discusses the evolutionary significance of floral design in genus Pedicularis.

如我们发现，由柱头特征不同导致传粉效率的差异，这种传粉效率与马先蒿属植物的花冠管成正比，与单花开放时间成反比，与花粉大小成正比，本文还着重讨论了这些相关性的适应性意义。

Pollen viability, stigmatic receptivity, the color of anther and stigma of 5 Iris plants were observed during blooming. Result:①The highest pollen viability was in 4 hours after blooming;②The stigmatic receptivities of I.

用醋酸洋红法测定了白花马蔺、马蔺、四川鸢尾、薄叶鸢尾和锐果鸢尾5种植物的花粉活力，用联苯胺-过氧化氢法测定其柱头可授性，同时观测了花药颜色变化和柱头颜色变化。

Stamens usually 6 in 2 whorls, rarely 3 or 1, inserted on perianth, often unequal or dissimilar; filaments slender, free; anthers 2-loculed, introrse, dehiscing by longitudinal slits or rarely by pores; pollen grains 2- or 3-nucleate, colpi 1 or 2(or 3), distal or subequatorial.

雄蕊通常6，2轮，很少3或者1，着生在花被上，通常不等长或者不同；花丝纤细，离生；花药2室，内向，纵向开裂或少数孔裂；花粉粒2-3核， 1或者2(或者3)沟，远轴或者近赤道面。

Together with the studies of the pollen morphology concerned in the subfamily of Rosoideae, several systematic questions are discussed.

本文在对Rosoideae的部分国产属种进行花粉形态报道的同时，也对一些有关系统学问题进行了讨论。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。