助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   floral syndrome 的翻译结果: 查询用时:0.205秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

floral syndrome
相关语句
  花综合征
     Floral syndrome and insect pollination of the Qinghai-Tibet Plateau endemic Swertia przewalskii (Gentianaceae)
     青藏高原特有植物祁连獐牙菜(龙胆科)的花综合征与虫媒传粉
短句来源
  “floral syndrome”译为未确定词的双语例句
     Floral syndrome and breeding system of Erigeron breviscapus
     短葶飞蓬(Erigeron breviscapus)的花部综合特征与繁育系统
短句来源
     Floral Syndrome and Insect Pollination of Liriodendron chinense 
     鹅掌楸的花部综合特征与虫媒传粉
短句来源
     FLORAL SYNDROME AND BREEDING SYSTEM OF THE ENDANGERED PLANT DISANTHUS CERCIDIFOLIUS MAXIM. VAR. LONGIPES
     濒危植物长柄双花木的花部综合特征与繁育系统
短句来源
     We studied the floral syndrome of this species and found that its flowers are characteristic of dichogamy and herkogamy.
     的花同时具有雌雄异熟和异型花这两种特征。
短句来源
  相似匹配句对
     SYNDROME
     Noonan氏综合征(附2例报告)
短句来源
     Floral syndrome and breeding system of Erigeron breviscapus
     短葶飞蓬(Erigeron breviscapus)的花部综合特征与繁育系统
短句来源
     Floral Syndrome and Insect Pollination of Liriodendron chinense 
     鹅掌楸的花部综合特征与虫媒传粉
短句来源
     Metabolic Syndrome
     代谢综合症
短句来源
查询“floral syndrome”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  floral syndrome
A morphological and anatomical description of the floral syndrome ofNierembergia is given, including a survey of the presence of elaiophores in most of its species, chromatography of the floral oils and observations on the pollinator behaviour.
      
Divergence between species with respect to floral syndrome and pollination system is not a common feature in the evolutionary pattern ofOpuntia.
      
Pollination by medium-sized and large bees is established for some of the species with this floral syndrome and is predicted for the others.
      
The floral syndrome of large, colorful, bowl-shaped, diurnal flowers is present in all of the prickly-pear species and most of the cholla (Cylindropuntia) species in this area.
      
We investigated whether the "ornithophilous" floral syndrome exhibited in an African sugarbush, Protea roupelliae (Proteaceae), reflects ecological specialization for bird-pollination.
      
更多          


The mating system of Ranalisma rostratum Stapf., an endangered aquatic species, was studied synthetically. The results are as follows: Pollen grains and stigmas were relatively smooth. Glandular cells occurred in flowers but not well developed. Pollen germination showed a higher level (716%) before flowering and a rapidly declining 1 hour after flower opening. Pollen-ovule ratio was a quite low value (P/O=106). Floral syndromes were suitable to the mating habits of pre-anthesis cleistogamous. In natural...

The mating system of Ranalisma rostratum Stapf., an endangered aquatic species, was studied synthetically. The results are as follows: Pollen grains and stigmas were relatively smooth. Glandular cells occurred in flowers but not well developed. Pollen germination showed a higher level (716%) before flowering and a rapidly declining 1 hour after flower opening. Pollen-ovule ratio was a quite low value (P/O=106). Floral syndromes were suitable to the mating habits of pre-anthesis cleistogamous. In natural or experimental populations, inter-flower pollination by insect were not observed, but intra-flower pollination were made by some small-sized insects (Tripidae). Pollen flow mediated by wind pollination was testified to be not existent. Results of artificial isolation or pollination showed that the fruit-sets after selfing/outcrossing were considerably high, but that outcrossing mechanism was short of in nature. Outcrossing rate of an experimental population was measured using isozyme genetic markers, the value estimated was, t=09%.

对濒危植物长喙毛茛泽泻(RanalismarostratumStapf.)的交配系统作了综合研究,结果是:该种的花粉粒和柱头较平滑,花内分泌细胞存在但欠发达,开花前花粉萌发率较高(716%)而开花1h后花粉萌发能力急剧衰退,花粉/胚珠比较低(P/O=106),花部综合特征与其花前期闭花授粉的交配习性相适应。该种的自然居群及实验居群中均未观察到花间的虫媒传粉,仅有极小型昆虫(蓟马科,Tripidae)起花内传粉作用,亦未检出风媒花粉流。人工隔离及控制授粉试验显示,该种在人工自交/异交后均有较高结实率,但自然状态下异交机制缺乏。用同工酶遗传标记法得到该种一个实验居群的交配系统特征参数异交率的估计值为t=09%。

The limited seed production of insect depended plant, Liriodendron chinense was once considered to be pollen limited and insufficient cross pollination. In this study, we counted pollen grains deposited on stigmas in three populations in Guizhou, Hunan and Zhejiang provinces of China respectively. Over 61.9% stigmas were pollinated. From 1994 to 1996, the mean number of pollen grains on each stigma ranged from 4.4 to 42.6, much more than ovules(2) in each pistil. Based on observations of three years, both...

The limited seed production of insect depended plant, Liriodendron chinense was once considered to be pollen limited and insufficient cross pollination. In this study, we counted pollen grains deposited on stigmas in three populations in Guizhou, Hunan and Zhejiang provinces of China respectively. Over 61.9% stigmas were pollinated. From 1994 to 1996, the mean number of pollen grains on each stigma ranged from 4.4 to 42.6, much more than ovules(2) in each pistil. Based on observations of three years, both the pollination rate and pollen quantity on stigmas significantly affected seed set. When flowers opened without stamens dehiscencing at the early stage of anthesis, stigmas received considerable quantity of pollen grains. Pollen grains from different sources were able to germinate and pollen tube growth rates were not greatly variable. It is very likely that pollen grains arrived first would fertilize eggs. Since only several pollen tubes went through the stylar canal, the potential pollen competition may exist. In this case, there would be strong selection on floral syndrome which benefit early insect visits. Pollen grains from the early visits would have a greater chance to fertilize ovules than those from later visits, which implies that cross pollination is the predominant breeding system of this plant. The conclusion was also confirmed by following four artificial experiments. Three treatments, including flowers bagged, netted or with the perianth removed, all reduced seed set clearly, but flowers with the stamens removed (emasculation)had a higher seed production by open pollination. As the rates of deposited stigmas in three populations were 6~8 times more than full seed set, we consider that lower seed production in this plant may not mainly be due to pollen limitation.

对鹅掌楸Liriodendronchinense3个自然居群连续3年直接统计落置柱头上的花粉量,其中61.9%以上的柱头接受了花粉。每柱头上的平均花粉量为4.4~42.6粒,明显超过胚珠数2。授粉率是结实率的6~8倍,鹅掌楸结实率低的主要原因可能不是由于花粉的限制。落置柱头的花粉几乎均可萌发,少数花粉管穿过花柱道,经珠孔端进入胚囊,暗示花粉间存在着强烈的竞争。授粉率和柱头上的平均花粉量与结实率呈正相关(R=0.77,R=0.69)。在柱头上人工授同株和异株的花粉,花粉管生长速率看不出明显差异,到达胚珠的时间在48~60h之间。花开花药未裂时柱头上落置较高比例的花粉,由于先期到达柱头的花粉最有可能受精,表明鹅掌楸有异交为主的繁育系统。人工处理包括套袋、套网、去除花被片,其结实率大大降低,而去雄后的结实率接近自然传粉结实率支持了这一观点

In studying the relationship between floral syndrome and pollen transfer in an endangered plant Liriodendron chinense (Hemsl.) Sarg., three natural populations in Guizhou, Hunan and Zhejiang Provinces of China were respectively chosen for the field work throughout the florescence. The role of wind pollination in this species could be ignored as the pollen quantity decreased rapidly with the increasing distance. In spite of morphological protogyny, pollen viability and the life span of receptive...

In studying the relationship between floral syndrome and pollen transfer in an endangered plant Liriodendron chinense (Hemsl.) Sarg., three natural populations in Guizhou, Hunan and Zhejiang Provinces of China were respectively chosen for the field work throughout the florescence. The role of wind pollination in this species could be ignored as the pollen quantity decreased rapidly with the increasing distance. In spite of morphological protogyny, pollen viability and the life span of receptive stigmas overlaped more than 24 h. Anatomically, anther sac has four locules with unequally thickened endothecium which may affect anther to dehisce. There were many secretory cells (and groups of fluorescent cells) at the base of petals and styles, but PAS reaction indicated that polyhexose was mostly concentrated in the cells around the vascular bundle of petals. Fluorescent cells and flower fragrance were regarded as attractants, nectar and pollen as rewards to visitors. The floral syndrome seems to be adaptive to insect pollination. During 1994 to 1996, a total number of thirty nine species of insects including bees, flies and beetles were recognized as the flower visitors. Among which only four were present in all the three populations. The visiting frequency varied distinctly from species to species and among populations. While bees were observed as the most frequent visitors in the population in Guizhou Province, they were substituted by flies in the other two populations in Hunan and Zhejiang Province, and became occasional visitors themselves. The beetles, despite of their frequent activity in flowers, played a much less important role in cross pollination. Comparing the mean pollen numbers deposited on stigmas per visit, it was found that bees were much more effective than flies in pollination. SEM examination of insect body also supported this point. Moreover, the visiting frequency was also observed to be closely associated with the characters of flower blossom. Visitors preferred to visit those flowers in early anthesis. Treatments of emasculation and perianth removal showed that the rewards of nectar was more attractive than pollen to pollinators. This species is tend to be cross pollinated by insects but without its faithful pollinators.

连续3年对鹅掌楸(Liriodendronchinense(Hemsl.)Sarg.)3个自然居群的性表达状态与花粉传递的关系进行了观察和实验检测。重力玻片法检测结果表明,风媒导致的异株传粉作用可以忽略。尽管存在雌雄异熟现象,但不同时期花粉在人工授粉的柱头上均能萌发,花粉活力与柱头可受期重叠超过1d。解剖结构显示花药壁纤维层不均匀增厚与开裂机制有关;花被片及花柱中均分布有分泌细胞和荧光细胞,但花为昆虫提供的大量蜜汁主要是由维管束周围的细胞所分泌。花散布的气味、花蜜在诱导昆虫传粉中起主要作用。共发现访花昆虫39种,主要包括蜂类、蝇类和甲虫类。其中4种昆虫为3个居群共有的访花者。昆虫访花频率因昆虫种类和所选居群的不同而异。其中贵州松桃居群以蜂类为主,而湖南龙山和浙江龙王山居群以蝇类为最频繁的访问者,蜂类为稀少的访问。3个居群在花粉释放盛期均有甲虫访花,但有效的传粉依赖体型较大的蜂类和蝇类。比较昆虫访花给每柱头带来的平均花粉量和虫体扫描电镜的观察,蜂类的传粉效率明显高于蝇类。昆虫访花频率与开花习性有关,访问者偏爱访问处于单花期较早阶段的花。去雄和切除花被片实验表明,蜜汁较花粉作为食物报酬对访花者更具吸引力。该种趋?

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关floral syndrome的内容
在知识搜索中查有关floral syndrome的内容
在数字搜索中查有关floral syndrome的内容
在概念知识元中查有关floral syndrome的内容
在学术趋势中查有关floral syndrome的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社