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首页> 外文期刊>International journal of plant sciences >IS BRANCHING INTENSITY INTERSPECIFICALLY RELATED TO BIOMASS ALLOCATION? A SURVEY OF 25 DICOT SHRUB SPECIES FROM AN OPEN-GROWING DRY VALLEY
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IS BRANCHING INTENSITY INTERSPECIFICALLY RELATED TO BIOMASS ALLOCATION? A SURVEY OF 25 DICOT SHRUB SPECIES FROM AN OPEN-GROWING DRY VALLEY

机译：分枝强度与生物量分配特别相关吗？从开放式干谷中调查的25种DICOT灌木物种

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摘要

The objective of this study was to test whether branching intensity is interspecifically correlated with the biomass allocation patterns of woody species at the level of the whole plant. For this purpose, we examined leaf size and number and branch size and number at different branch orders and computed both a commonly used measure and a newly constructed measure of branching intensity (i.e., Whitney's parameter and y, respectively) to determine whether biomass allocation patterns are correlated with branching intensity for 25 shrub species from a dry valley in southwest China. Whitney's parameter (BI) was calculated as (N_T - 1)/(N_T - N_t) for whole plants, where N_T is the total branch number at different branch orders and N_t is the number of terminal branches. Gamma was calculated as N_t divided by the maximum branch order. No significant across-species relationship was found between BI and the quotient of leaf and stem mass. However, a positive correlation was observed between BI and the quotient of stem and root mass. In contrast, y was negatively correlated with the quotient of leaf and stem mass but not correlated with the quotient of stem and root mass. The relationship between branching intensity and biomass allocation patterns could be understood from the allometries among the study architectural traits. In conclusion, branching intensity is interspecifically correlated with biomass allocation patterns. However, the correlation is parameter specific, because different measures of branching intensity produce different kinds of correlations.
机译：这项研究的目的是测试在整个植物水平上，分支强度是否与木本物种的生物量分配模式在种间相关。为此，我们检查了叶的大小和数量以及不同分支顺序下的分支大小和数量，并计算了分支强度的常用度量和新构建的度量（即分别为Whitney参数和y），以确定生物量分配模式是否与西南干旱谷地25种灌木物种的分支强度相关。对于整个植物，惠特尼参数（BI）的计算公式为（N_T-1）/（N_T-N_t），其中N_T是不同分支顺序下的总分支数，N_t是末端分支数。 γ计算为N_t除以最大分支顺序。 BI与叶和茎质量的商之间没有发现显着的跨物种关系。然而，BI与茎和根质量的商之间观察到正相关。相反，y与叶和茎质量的商负相关，但与茎和根质量的商不相关。分支强度和生物量分配模式之间的关系可以从研究建筑特征之间的同构异构关系中理解。总之，分支强度与生物量分配模式在种间相关。但是，相关性是特定于参数的，因为分支强度的不同度量会产生不同类型的相关性。

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  • 来源
    《International journal of plant sciences》 |2010年第6期|P.615-625|共11页
  • 作者

    Shucun Sun; Karl J. Niklas; Fei Fang; Shuang Xiang; Xinwei Wu; Xiaocheng Yang;

  • 作者单位

    Department of Biology, Nanjing University, Nanjing 210093, China ECORES Lab, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;

    rnDepartment of Plant Biology, Cornell University, Ithaca, New York 14850, U.S.A.;

    rnDepartment of Biology, Nanjing University, Nanjing 210093, China;

    rnECORES Lab, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;

    rnECORES Lab, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;

    rnCollege of Material and Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biomass allocation; branching intensity; life-history trade-off; crown architecture; leaf size-twig size spectrum;

    机译：生物量分配;分支强度生活史权衡;皇冠建筑;叶大小-小枝大小谱;
  • 入库时间 2022-08-18 03:45:40

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