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
   异交水平 的翻译结果: 查询用时:0.129秒
图标索引 在分类学科中查询
所有学科
林业
更多类别查询

图标索引 历史查询
 

异交水平
相关语句
  outcrossing rate
     Analysis on Outcrossing Rate in a Masson Pine Clonal Seed Orchard during Early Phase of Seed Production
     马尾松无性系种子园结实初期异交水平分析
短句来源
  “异交水平”译为未确定词的双语例句
     From the research done, conclusions can be reached as follows: the outcrossing rates of conifers are mostly around 90% while those of broadleaf trees are relatively lower; the outcrossing rates may change with differnce in individuals, level of crowns, population density, amount of flowers, reproductive phenology.
     研究结果表明:针叶树种群体的异交率大都在90%左右,阔叶树种则相对较低,异交水平会因个体、冠层、群体密度、花量、花期不同而有所不同。
短句来源
     , outcrossing rates are not correlated with densities of blooming plants in populations, but the level of outcrossing is dependent on the frequencies of individuals bearing more than two inflorescences.
     对雌雄同株的小慈姑而言 ,异交率与各种群花期植株密度无关 ,异交水平取决于种群中开花花序在两个或两个以上的植株所占比例
短句来源
  相似匹配句对
     C were measured by the method of radioimmunology.
     C的水平
短句来源
     Horizontal Gene Transfer
     水平基因转移
短句来源
     Analysis on Outcrossing Rate in a Masson Pine Clonal Seed Orchard during Early Phase of Seed Production
     马尾松无性系种子园结实初期异交水平分析
短句来源
     sinense Y. X. Lin is high, the value is from 0.000-3.500. The different locus outcrossing rate of Adiantum reniforme L.var sinese Y.
     6)荷叶铁线蕨的异交水平较高,为0.000-3.500。
短句来源
     Their agronomic character and outcrossing traits are superior.
     农艺、异交性状优良。
短句来源
查询“异交水平”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。
  outcrossing rate
Outcrossing rate in a natural population of Caldesia grandis was estimated by the dominant random amplified polymorphism DNA (RAPD) marker using 10 open-pollinated progeny arrays of 24 individuals.
      
The multilocus outcrossing rate estimated based on all 25 RAPD loci was 0.872 ± 0.033 and the single-locus outcrossing rate was 0.795 ± 0.032.
      
The outcrossing rate was greatest in the oldest crop (85%) and lowest in the most recent crop (66%).
      
major is predominantly inbreeding; a first estimate of the outcrossing rate is only 10%.
      
Impact of population structure on the apparent outcrossing rate of grain sorghum (Sorghum bicolor)
      
更多          


The paper briefly reviews the history of reseach on mating systems of forest tree populations with emphasis on the advances in studies using isozymes as genetic markers. Up to now, the number of tree species for which mating systems have been studied is more than 52. The mating system study was firstly focused on natural populations, then moved to both natural and artificial papulations. However, the study was increasingly focusd an artificial papulations in recent years. From the research done, conclusions...

The paper briefly reviews the history of reseach on mating systems of forest tree populations with emphasis on the advances in studies using isozymes as genetic markers. Up to now, the number of tree species for which mating systems have been studied is more than 52. The mating system study was firstly focused on natural populations, then moved to both natural and artificial papulations. However, the study was increasingly focusd an artificial papulations in recent years. From the research done, conclusions can be reached as follows: the outcrossing rates of conifers are mostly around 90% while those of broadleaf trees are relatively lower; the outcrossing rates may change with differnce in individuals, level of crowns, population density, amount of flowers, reproductive phenology. Based on the results, the authors discusses the further research needed in this field and suggests that more research in seed orchards in China be carried out.

本文简要回顾了林木群体交配系统研究的历史,重点阐述了利用同工酶作为遗传标记对该问题的研究进展。目前开展交配系统研究的树种已超过52个,大部分研究集中在针叶树种,研究群体由原来的天然群体为主,到后来的天然群体与人工群体并重,转对人工群体的研究日渐加强。研究结果表明:针叶树种群体的异交率大都在90%左右,阔叶树种则相对较低,异交水平会因个体、冠层、群体密度、花量、花期不同而有所不同。根据上述情况,文章对今后的研究作了讨论,建议国内对同一领域开展研究的重点放在林木种子园中

Proportions of full seeds in outcrossed cones,self pollinated cones,and open pollinated cones in 1993 and 1994 was used to estimate outcrossing rate of a masson pine clonal seed orchard.It was found that there existed higher selfing rate in the masson pine clonal seed orchard at age 8 or 9.The great differences were found between clones from various parents for outcrossing rates under open pollination,which ranged from 44.7% to 98.1% (av.73.5%±17.3%)...

Proportions of full seeds in outcrossed cones,self pollinated cones,and open pollinated cones in 1993 and 1994 was used to estimate outcrossing rate of a masson pine clonal seed orchard.It was found that there existed higher selfing rate in the masson pine clonal seed orchard at age 8 or 9.The great differences were found between clones from various parents for outcrossing rates under open pollination,which ranged from 44.7% to 98.1% (av.73.5%±17.3%) in 1993,and from 30.8% to 96.8% (av.69.2%±21.3%) in 1994 respectively.The outcrossing rates were larger among combinations within clones than among clones.The coefficient of variability of the former was 35.3% to 53.0% of the latter.No significant differences were observed for outcrossing rates of the same combinations between two years.Meanwhile,the crossing rates were found to be significantly and positively related to the fertilized cone rates.Finally,main factors affecting crossing rate was discussed.

利用 1993年和 1994年测定数据 ,采用球果饱满种子百分率方法估算马尾松无性系种子园异交率。研究发现 8~ 9年生马尾松无性系种子园在结实初期自交率较高 ,异交水平较低。利用不同杂交组合估算的各亲本无性系在自由授粉情况下的异交率差异较大 ,两年中分别为 4 4 .7%~98.1%和 30 .8%~ 96 .8% ,平均为 73.5% (标准误差 SE=17.3% )和 6 9.2 % (标准误差 SE=2 1.3% )。异交率在无性系间变异较小 ,在无性系内不同组合间变异较大 ,前者变异系数仅为后者的35.3%~ 53.0 %。相同双亲组合的异交率在相邻两年度间差异不显著 ,并存在着显著的正相关。同时 ,还发现异交率与座果率有显著的线性正相关关系。最后对影响异交率的主要因素进行了讨论

The floral expression and pollination mechanisms of Sagittaria potamogetifolia Merr., a helophyte species, were observed in natural populations. The species is insect and, concurrently, wind pollinated, but pollen flows are mediated mainly by insect pollination. The movements of pollinators are correlated with densities of inflorescence in populations, because the insect visitors have a certain capability to adapt to variations in population density. Outcrossing rates of 5 samples from 3 populations were...

The floral expression and pollination mechanisms of Sagittaria potamogetifolia Merr., a helophyte species, were observed in natural populations. The species is insect and, concurrently, wind pollinated, but pollen flows are mediated mainly by insect pollination. The movements of pollinators are correlated with densities of inflorescence in populations, because the insect visitors have a certain capability to adapt to variations in population density. Outcrossing rates of 5 samples from 3 populations were quantitatively estimated by sampling from natural habitats and using an isozyme locus as a genetic marker. The outcrossing rates in the 5 samples (50 0%-92 8% ) indicate a mixed mating system dominated by outcrossing mechanisms. For the monoecious species S. potamogetifolia Merr., outcrossing rates are not correlated with densities of blooming plants in populations, but the level of outcrossing is dependent on the frequencies of individuals bearing more than two inflorescences.

在自然种群中对沼生植物小慈姑 (Sagittaria potamogetifolia Merr.)的开花状态和传粉过程作了观测 ,并用同工酶遗传标记法定量估测了其 3个种群中 5个样本的异交率。该种为虫媒传粉为主的虫媒 /风媒兼性传粉机制 ,访花昆虫的飞行距离多在 0~ 2 m范围内 ,并与花序密度呈不显著的正相关。异交率 (t)为 5 0 .0 %~ 92 .8% ,表明该种为异交为主的混合交配系统 (Mixed m ating system)。对雌雄同株的小慈姑而言 ,异交率与各种群花期植株密度无关 ,异交水平取决于种群中开花花序在两个或两个以上的植株所占比例

 
图标索引 相关查询

 


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

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