查询词典 pollen

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.

结果表明，阿魏属花粉形状为长球形，而独活属花粉为超长球形；2属花粉外壁均具有网状纹饰，3孔沟。

The increase or decrease of Ca〓 level or inhibition of CaM activity in germinating pollen led to the inhibition of normal catabolism of total, neutral, polar lipids, phospholipids and free fatty acids and disturbance of the normal gemination—induced changes of composition of fatty acids, and finally inhibited pollen germination and tube growth.

提高或降低花粉内Ca〓水平以及使用CaM抑制剂导致正常的脂类和游离脂肪酸分解代谢过程受阻，极性脂脂肪酸组分改变，从而影响花粉的萌发和花粉管的生长。

The result showed that:①the pollen germinability was going down following the falling of FT and GT,pollen germination rate is above 48% under normal GT24℃,about 30% under GT15℃,the germination rate under GT9℃ is fearfully low,approaching zero,all the influence of FT and GT is highly significant,but,the effect of the GT is bigger,the interac...

不同的FT和GT组合下，自交系间花粉的发芽率除FT15℃/GT24℃下差异不显著，其他FT(15℃、12℃、9℃)和GT(24℃、18℃、15℃、12℃、9℃)的各组合温度下，都达到了极显著差异。

Pollen through happenstance by virtue of producing an amount of pollen that is one to three orders of magnitude greater than the amount produced by species pollinated by insects.

其途径是，制造出大于昆虫授粉的植物种类所产生的花粉量的一至三个数量级的花粉量。

Their pollen grains are subspheroidal to spheroidal, and germination aperture is 3-colpate; pollen exine has punctuate to foveolate sculpture; it is easy to distinguish exine and intine except S.

各种植物花粉外壁超微结构的特征在旌节花属两个组中较一致，但其差异可作为探讨属下种的分类和系统学关系的依据。

The intine of pollen wall was constructed dur-ing the stage of 2-cellular pollen and consisted ofcellulose material coming from vegetative cell ofpollen.

邓继新等(1990)用生理学方法研究了光敏核不育水稻可育花药和不育花药中的ATP酶含量，发现两种花药有差异。

The megagamete fertility, the quantity of the anther , pollen sac wall structure and the dehiscent state, the quantity of the pollen grain were observed in the flowering phase I

第Ⅰ花期观察供试材料的雌配子育性、颖花内花药数、花药吐露情况、成熟花粉囊壁的开裂状况与结构、花粉量

About 12 months earlier, the pollen grain germinated, producing a pollen tube that slowly digested its way through the tissues of the nucellus toward the developing megagametophyte.

大约 12 年之前，花粉谷粒发芽，产生慢慢地经过向发展中的 megagametophyte 的 nucellus 的薄的纱织品消化了它的方法的花粉管。

The pollen grains of yew tree are directly fallen on the micropyle by wind and enter pollen chamber at the top of nucellus through pollination drops, a sugary exudation rich in nutritious materials at the micropyle.

红豆杉的花粉，一般借助风力直接传播到珠孔端的传粉滴上。传粉滴是珠心组织的周期性分泌产物，它富含糖和氨基酸等营养物质。

Pollen cones solitary or clustered, with numerous spirally arranged microsporophylls; microsporophyll with 2 microsporangia; pollen usually 2-saccate (nonsaccate in Cedrus , Larix , Pseudotsuga , and most species of Tsuga ).

雄球花单生或者丛生，有许多螺旋排列的小孢子叶；每个雄蕊有有2个花药；花粉通常有2个气囊状(无气囊，如Cedrus，Larix，Pseudotsuga 和大多数的Tsuga)。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。