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水平侧根直径
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  “水平侧根直径”译为未确定词的双语例句
     Analysis on Asymmetry of Horizontal Lateral Root Diameterin Clonal Ramets of Rhus typhina
     火炬树克隆分株前后端水平侧根直径不对称性分析
短句来源
     (2) The correlation between the diameter of the front lateral root of Staghorn sumac and its basal diameter, crown width and height is more significant than that of the back part of the lateral root.
     火炬树子株前端水平侧根直径与其地径、冠幅、树高的相关性高于后端水平侧根直径 ;
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
     Analysis on Asymmetry of Horizontal Lateral Root Diameterin Clonal Ramets of Rhus typhina
     火炬树克隆分株前后端水平侧根直径不对称性分析
短句来源
     Horizontal Gene Transfer
     水平基因转移
短句来源
     and the fruit diameter, T.
     果实直径、T.
短句来源
     Researches on p-y Curve of Large Diameter Piles under Lateral Loadings
     水平荷载作用下大直径桩的p-y曲线研究
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The demorgraphical characteristics of the lateral root, the pattern of the biomass accumulation of Staghorn sumac(Rhus typhina) and their relationship with its clonal reproduction were mainly discussed through sampling the trees randomly and measuring in the lab and at field in this paper for the first time. The results show that:(1) The demorgraphical asymestry that the diameter of the front part of the clonal ramet root in Staghorn sumac is higher than that of the back part become more significant with the...

The demorgraphical characteristics of the lateral root, the pattern of the biomass accumulation of Staghorn sumac(Rhus typhina) and their relationship with its clonal reproduction were mainly discussed through sampling the trees randomly and measuring in the lab and at field in this paper for the first time. The results show that:(1) The demorgraphical asymestry that the diameter of the front part of the clonal ramet root in Staghorn sumac is higher than that of the back part become more significant with the time, but there is no correlation between the asymestry and the topography where the Staghorn sumac clonal ramet grow.(2) The correlation between the diameter of the front lateral root of Staghorn sumac and its basal diameter, crown width and height is more significant than that of the back part of the lateral root.(3)The root biomass of a 1~6|year| old of Staghorn sumac, which grown on the barren hills or in the rocky crevice is lower than that of its crown. At the same time, the biomass per 10 cm of the front root is higher than that of the back root. The patterns of biomass is probably crucial for Staghorn sumac to reproduce and to clonize the new habitat. It is the non balance of organic nutrient allocation that make Staghorn sumac to reproduce in a short time. Based on the research results above, Staghorn sumac will become an ecological envasive species in the Northern China.

通过随机选取样木后进行室内外测定 ,揭示了外来种火炬树水平侧根形态特征、生物量积累格局与克隆繁殖的关系。结果表明 :火炬树克隆子株前端水平侧根直径超过后端水平侧根直径的形态不对称性随树龄而日趋显著 ,随地形起伏变化几乎呈现完全一致形态特征 ;火炬树子株前端水平侧根直径与其地径、冠幅、树高的相关性高于后端水平侧根直径 ;生长于荒山石隙生境 1~ 6a火炬树的生物量分配比例为树冠大于根系 ,单位长度水平侧根生物量却以子株前端水平侧根高于子株后端水平侧根 ,由此形成的生物量冠根复合分配格局成为火炬树克隆繁殖快速占据新生境的营养物质前提。火炬树具有营养物质在水平侧根趋前储备的特征 ,为其快速克隆繁殖准备最小空间间隔的相对充足的营养库。火炬树是一个入侵力正在表达的外来种。

Staghorn Sumac(%Rhus typhina%) is an alien tree species. It is a clonal woody plant with the distinguished characteristics, which the front part of the horizontal lateral root in the Staghorn Sumac is much bigger than the back part. In order to analyze the causes of the distinctive asymmetry of the lateral root diameter of the clonal ramets in Staghorn Sumac, samples were taken during the growth period in 2003.Nine individual plants at age of 1 year with their intact underground organs were carefully digged...

Staghorn Sumac(%Rhus typhina%) is an alien tree species. It is a clonal woody plant with the distinguished characteristics, which the front part of the horizontal lateral root in the Staghorn Sumac is much bigger than the back part. In order to analyze the causes of the distinctive asymmetry of the lateral root diameter of the clonal ramets in Staghorn Sumac, samples were taken during the growth period in 2003.Nine individual plants at age of 1 year with their intact underground organs were carefully digged out and planted in the potters for feeding ()~(14)C isotope. The lateral roots of each individual plants at age from one to three or four were also taken for testing or observing in laboratory. Then the distribution of photosynthetic products in the clonal ramets were tested by means of isotope ()~(14)C tracer technique, the contents of hormone such as IAA,GA_3 and ABA of different organs in Staghorn Sumac were determined and the anatomical structure characteristics were observed. The experimental results showed that: 1)The abundances of isotope ()~(14)C in different organs of 9 clonal ramets of Staghorn Sumac were ranked as follows: feeding leaves>stem>the front part of the lateral root>the back part. 2) As the result of the higher density and larger diameter of vessel in the front part(RDF) of the lateral root of the clonal ramets, the abundant nutrition in the central part of the lateral root and the much numerous layer in the cambium, the width of the secondary xylem of the front part in the clonal ramets at age from 1 to 4 years was much larger than that of the back part(RDB). 3)IAA/GA_3 ratio of the front part in the clonal ramet at age of 1 and 3 was much higher than that of the back part. Therefore, it was concluded that the asymmetry of the lateral root diameter between the front part and the back part in Staghorn Sumac clonal ramet would be induced by the nonbalance accumulation of photosynthetic products, which accumulated in the front part of the lateral root of the clonal ramet much more than the back part, and related to the hormone level and the cambium activity closely. The stem of the clonal ramet and its front part of the lateral root would belong to the dominant and subdominant growth and the store center of photosynthetic products respectively.

以1、2和3年生火炬树克隆分株为研究材料,分别于2003年生长季取样,研究激素的种类和含量、光合产物分配特征以及前后端水平侧根的形态解剖差异。结果证实:9株1年生火炬树克隆分株测定器官14C同位素活度均呈现饲喂叶>茎>前端(RDF)>后端(RDB)的递降序列;火炬树1~4年生克隆分株前端侧根次生木质部宽度超过后端侧根次生木质部宽度,在于前端侧根形成层分裂活动活跃,次生木质部导管直径和密度大;1年和3年生火炬树克隆分株前端的IAA/GA3比值高于后端的IAA/GA3比值。分析认为:火炬树克隆分株水平侧根直径不对称与光合产物趋前积累、激素水平以及形成层活动等因素密切相关。火炬树克隆分株的茎和前端侧根分别属于优先和次优先生长与光合产物的贮藏中心。

 
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