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首页> 外文期刊>Ecological research >Influence of shade timing on an Equisetum arvense L. population
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Influence of shade timing on an Equisetum arvense L. population

机译：遮荫时间对马贼木贼种群的影响

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摘要

Equisetum arvense L. is a perennial pteridophyte that grows in open sites. In Tokyo, the plant has photosynthetic shoots from late March to November. However, in some populations, these shoots are lost before summer because of shading by taller plants. To investigate the contribution of shoots that remain on the plant for a certain duration, in terms of the maintenance of the E. arvense population, tubers were cultivated under different light conditions and the dry weight of growth, photosynthetic rates and respiration rates were measured. Individual growth was simulated on the basis of matter production and its partitioning. Biomass at the start of the next growing season (the initial size) was seriously decreased by shading before July. However, shading after July had little effect on the initial size of the next season plants. Thus, E. arvense can maintain its population if its shoots are retained until summer.
机译：木贼木贼属植物是多年生的蕨类植物，在露天场所生长。在东京，该植物从3月下旬到11月都有光合作用的芽。但是，在某些种群中，由于高大的植物遮荫，这些芽在夏天之前丢失。为了研究在一定时期内保留在植物上的芽的贡献，就维持野外大肠杆菌的数量而言，在不同的光照条件下种植块茎，并测量其生长的干重，光合速率和呼吸速率。在物质生产及其分配的基础上模拟了个体增长。在下一个生长季节开始时（初始大小）的生物量在7月之前因遮荫而严重减少。但是，7月之后的遮光对下个季节植物的初始大小影响不大。因此，如果将嫩芽保留到夏季，则欧文肠杆菌可以维持其种群。

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