Plant produced by the transfer of pollen from one strain to the endosperm of a different strain.
直接'。''反应，通过将一种植物的花粉引入另一种植物的内乳中所产生
The direct effect on a hybrid plant produced by the transfer of pollen from one strain to the endosperm of a different strain.
异粉性杂交植物的一种直接反应，通过将一种植物的花粉引入另一种植物的内乳中所产生
Images of Zygophyllum dumosum Boiss, an endemic plant of Israel, Jordan, and Sinai, do not need any verification of pollen grains, although they are present in Frei's list.
裹尸布上另一种植物的影像，Zygophyllum dumosum Boiss，是以色列，约旦和西奈特有的，不需要任何的花粉的证实，尽管弗雷的花粉粒子列表中也可以见到它们。
Under high temperature, comparing with heat-sensitive line Xintaimici, EP-6 have higher female node percentage and parthenocarpic fruit set percentage, XC-1 have more plant node number and higher stamen and pollen heat-tolerance, and NY-1 have slight advantage in all aspects above.
与不耐热品系新泰密刺相比，高温下品系EP-6通过较高的雌花节率和较强的单性结果能力耐热，品系XC-1通过较多的总生长节位和较高的雄蕊及花粉活力耐热，品系NY-1则在上述产量形成的诸因子中均有一定优势。
A comparative study of pollen floras between two cores: Core 17940 from the northern slope of the South China Sea and a core from the Toushe Basin in central Taiwan Province, reveals that there were three different vegetation types around the two areas during 15-40kaBP. The first type is characterized with the subtropical evergreen broadleaved forest during MIS2 (20-15kaBP). The second is the Pinus/Alnus-dominated woody plant communitites, corresponding to an interstadial summer monsoon dominated warm and humid climate and higher sea/lake level. The third is the Artemisia/Poaceae-dominated herb communities, corresponding to a stadial winter monsoon dominated warm and dry climate and lower sea/lake level.
根据南海北部17940孔和台湾中部头社孔孢粉序列对比结果，首次提出了华南地区15-40kaBP期间的三个具代表性植物群：1以青栲类为主的亚热带常绿阔叶林为第1植物群，该植物群在MIS2阶段(20-15kaBP)，为南海北部周边地区和台湾中部头社盆地周围地带性植被；2以松属或桤木属为主的木本植物为第2植物群，对应于间冰阶，夏季风盛行，降水充沛，气候暖湿，高海面；3以蒿属或以禾草为主的草本植物为第3植物群，对应于冰阶，冬季风盛行，降水少，气候暖干，低海面。
The actin cytoskeleton microfilament system performs essential functions in the morphogenesis, especially in the plant cell such as pollen tube, root hair, leaf hair, guard cell.
肌动蛋白微丝骨架对植物高度特异化的细胞如花粉管、根毛、叶毛和气孔保卫细胞的形态发生和功能起着重要作用。
Fern spores and spermatophyte pollen have major roles in plant sex reproduction.
蕨类植物孢子与种子植物花粉在有性生殖过程中都具有重要的作用。
Creation by the union of sperm or pollen with an animal or plant or egg cell.
花粉和植物或精子与卵子相结合的行为或过程。
The results showed that pollen in differentfamily or genus of plant have different requirements for phytohormones. The basicmedium of pollen culture supplemented with 2ppm NAA and GA_3 can promotes thepollen germination in Cruciferae. It has been proved that basic medium supplemtedwith 2ppm IAA and GA_3 has special effect on pollen germination and elongation ofpollen tube of woody plant in Rosace...
结果证明：不同科属的植物花粉对激素的要求不同，如在花粉萌发的基本培养基上加2ppm的NAA和GA_3混合液对十字花科植物花粉有促进作用，加2ppm的IAA和GAa_3混合液对蔷薇科木本植物花粉萌发和花粉管伸长有显著效果，而葫芦科植物的花粉在基本培养基上只要有无机盐离子就可以萌发，激素仍有促进花粉萌发的作用。
The results of studying the effects of several plant growth regulating substances on pollen germination and tube growth in pear (Pyrus serotina Rhed.) by cultivating pollens in liquid media showed that GA3, TRIA, IAA and 2, 4D stimulated pollen germination and tube growth when pollen was cultivated in their lower concentration media.
采用花粉液体培养法研究了植物生长调节物质对梨花粉萌发和花粉管生长的影响，结果表明：较低浓度的赤霉素、三十烷醇、吲哚乙酸及2，4-D均能促进花粉萌发和花粉管生长，而超过一定浓度时却起抑制作用，最适宜于花粉萌发和花粉管生长的赤霉素浓度为50～300mg/L，三十烷醇为3～100mg/L，吲哚乙酸为5～25mg/L，2，4-D为5～10mg/L。
Pollen of the ragweed plant is a common allergen.
豚草属植物的花粉是常见的过敏原。
In pollen, from the model plant mouse-ear cress, a reduction in TUDOR-SN leads to fragmentation of DNA and premature cell death.
现在，一国际研究团队发现，植物和动物中决定细胞程序性死亡的遗传学过程实际上是进化相关的，并且用相同的方式执行功能。
Therefore, we selected common species of Ranunculaceae. comparative primordial plants in Alpine Meadow at Eastern QinghaiTibetan Plateau, and studied the reproductive strategies, such as reproductive allocation, especially sex allocation, to understand how the plants adapt the environmental conditions. The results showed:(1) At higher altitude, the self-incompatible plant, such as Trollius ranunculoides tended to become limited by pollination rather than by nutrient availability, while the self-compatible plants, such as Anemone rivularis and A. obtusiloba seemed not to be limited by pollen availability, which suggested that ability of self pollination for alpine plants may be a mechanism of reproductive assurance.(2) Influences induced by high altitude on the reproduction of these species occurred on different reproductive characters, which suggest species-specific adaptive strategies. The influences are dependent on plant size to some extent.
因此，我们选择在青藏高原东部的高寒草甸，以比较原始的植物类群—毛茛科植物为研究对象，选择一些常见种探讨其繁殖对策，如繁殖分配和性分配问题，试图揭示这些植物如何适应环境条件，最后的结果表明：1高寒草甸高海拔区，自交植物(如小花草玉梅A.rivularis和钝裂银莲花A.obtusiloba)的繁殖不受花粉限制，而完全异交植物(毛茛状金莲花T.ranunculoides)的繁殖受花粉限制，表明高海拔地区植物的白花授粉能力可能是一种繁殖保障机制，能够避免恶劣环境对植物有性繁殖的不利影响； 2海拔高度对植物的影响因种而异，不同的物种受影响的繁殖性状不同，即使同属亲缘种间也存在差异，表明不同物种对相似环境压力的适应对策不同；而且，海拔高度对植物的影响在一定程度上依赖于植物个体大小，说明植物通过调整其个体大小与繁殖性状的关系来适应环境梯度的变化； 3植物花期和果期的繁殖分配并不完全随海拔升高而减小(只有小花草玉梅的果期RA随海拔升高而减小30％)，与Iwasa和Cohen的预测不完全一致(他们认为繁殖分配随生长季缩短而减小)。
Bioaerosols may consist of pathogenic or non-pathogenic live or dead bacteria and fungi, viruses, high molecular weight allergens, bacterial endotoxins, mycotoxin, peptidoglycans, glucans, pollen, plant fibers, etc.
生物气胶可由致病性或非致病性的，活的或死的细菌，真菌，病毒，高分子量抗原，细菌内毒素，霉菌毒素，胜聚糖，葡聚糖，花粉与植物纤维等所组成。
Purpuraristatus, the growth, fertility, chromosome configuration, EST isozyme etc. were analyzed in this paper. The results showed that the growth potentiality of (E. sibiricus×E. purpuraristatus) F2 and (E. purpuraristatus×E. sibiricus) F1 were much stronger than their parents, the plant height of the former was 143.2 cm. The whole plant was reseda, the latter was 129.7 cm. The spike nodding of two hybrids were in the middle of their parents, the anther was yellow; the pollen fertility was 0.02%~0.03%, seed set was 0; the average chromosome configuration of former pollen mother cell at PMC M Ⅰ was 6.90Ⅰ+14.02Ⅱ, the latter was 7.82Ⅰ+13.59 Ⅱ, and lagging chromosome and bridge fragment were observed at meiosis anaphase Ⅰ the EST of the two hybrids F1 and their parents at tillering stage was some certain different in locus, number and intensity.
结果表明，正交F1和反交F1植株的生长势均很强，正交F1株高143.2 cm、全株浅绿色，反交F1株高129.7 cm、全株灰绿色；正、反交F1的穗型均呈双亲中间型，花药呈黄色，花粉可育率0.02%~0.03%，结实率为0，说明杂种高度不育；正交F1的花粉母细胞减数分裂中期Ⅰ平均染色体构型为6.90Ⅰ+14.02Ⅱ，反交F1为7.82Ⅰ+13.59Ⅱ，减数分裂后期丁有落后染色体和染色体桥等不规则现象；亲本及其正、反交杂种F1分某期幼叶的EST同工酶酶带的位点、数目和强弱均存在一定差异，可作为亲本及杂种在蛋白质水平识别的重要依据。
Based on principle of pollen abortion, utilizing tapetum of anther cell, mitochondria of tapetum, callose well, process of cell meiosis during formation process of pollen, we adopt genetic transformation to create plant male sterility, such as, exogenous cytotoxin gene, chaperones, anti-sense RNA, degradation of callose ahead of time, disturbing information intercommunion between mitochondria and nucleolus and affected development of pollen sporule by bacteria.
根据花粉败育的原理，利用花药细胞绒毡层、绒毡层线粒体、胼胝质壁、细胞减数分裂过程等花粉形成过程中的不同环节，采取外源细胞毒素基因、分子伴侣、反义RNA技术、提早降解胼胝质、扰乱线粒体与细胞核之间的信息交流和细菌影响花粉小孢子发育等策略，使花粉不能正常形成，从而产生不育花粉，达到产生雄性不育的目的。
What will happen if the pollen of a transgenic plant containing some kind of drug fertilizes a nearby edible crop?
侵蚀，如果含有药物制剂的转基因植物花粉对邻近可食用作物授粉以后会怎样？
Using my data base of more than 90, 000 sites of plant distribution, the place that best fits the assemblage of the plant species whose images and often pollen grains have been identified on the Shroud is 10-20 km east and west of Jerusalem.
通过使用我自己制作，有90000以上不同植物分布地带资料的数据库，，裹尸布上所发现的这些植物的种类和花粉，它们最适合生长地点，目前已经被确定出来是在耶路撒冷以东和以西大约10-20公里地区内。
In general, the properties of CaM from P. yunnanensis pollen is similar to these CaMs from aminal and other plant sources.
总而言之，其理化性质类似于从动物和其它植物中提取的CaM。
The male sterile of plant is the basic of hybrid vigor. It is also the best material for the research of heredity of cytoplasmic, the interaction between nuclear and cytoplasmic and the development of pollen.
植物雄性不育是农作物杂种优势利用的基础，另一方面，它又是研究细胞质遗传、核质互作和花粉发育的极好材料。