Effects of interspecific competition periodic shoot elongation in oak seedlings
Effects of interspecific competition periodic shoot elongation in oak seedlings
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DOI：
10.1139/x26-218
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发表时间：
1996-11-01
期刊：
影响因子：
--
通讯作者：
Frochot, H
中科院分区：
文献类型：
--
作者：
Collet, C;Frochot, H
研究了种间竞争对油橄榄周期性枝条伸长的影响。亲爱的和Quercus robur L.在两个实验中研究幼苗。在第一个实验中，在野外条件下进行，在不同水平的草和灌木竞争下生长年轻的橡树。在夏季的三个日期评估幼苗产生的生长沙沙声的数量。在第二个试验中，进行了火种控制条件下，幼苗在不同水平的竞争和浇水制度下生长。在两个连续的生长季节期间，每两周测量一次枝伸长。竞争生长的幼苗在生长季节产生较少的生长冲洗，这些冲洗被推迟。它们在每次冲洗期间产生的生长单位也较少，并且这些生长单位较短。在整个生长季节中，所有生长的幼苗在没有竞争的情况下同时冲水。相反，竞争生长的幼苗在春季表现出同步冲洗，但在生长季节后期变得异步。
The effects of interspecific competition on periodic shoot elongation of Quercus petraea (Matt.) Liebl. and Quercus robur L. seedlings were investigated in two experiments. in the First experiment, conducted under field conditions, young oaks were grown under various levels of grass and shrub competition. The number of growth Rustles produced by the seedlings uas assessed on three dates during the summer, In the second experiment, conducted tinder controlled conditions, seedlings were grown under various levels of competition and watering regimes. Biweekly measurements of shoot elongation were made during two consecutive growing seasons. Seedlings grown with competition produced fewer growth flushes during the growing season, and those flushes were delayed. They also produced fewer growth units during each flush and those growth units were shorter. All the seedlings grown without competition flushed at the same time during the entire growing season. On the contrary, the seedlings grown with competition showed synchronous flushing in spring, but became asynchronous later in the growing season.