BACKGROUND AND AIMS: Clonal fragments of the rhizomatous dwarf bamboo Sasa palmata, which widely predominates in temperate regions of Japan, were grown under heterogeneous resource conditions such as gap understories or nutrient-patchy grassland. Clo ...

BACKGROUND AND AIMS: In clonal plants, internode connections allow translocation of photosynthates, water, nutrients and other substances among ramets. Clonal plants form large systems that are likely to experience small-scale spatial heterogeneity. ...

Clonal plants spread horizontally, and can transport nutrients between ramets. Decaying biomass feeds back nutrients into the soil, but importantly, the place of deposition may differ from the place of uptake. To our knowledge, the present model is t ...

Hedysarum laeve, a rhizomatous clonal half-shrub, commonly dominates in inland dunes in semiarid areas of northern China. This species propagates vegetatively by the extension of horizontal rhizomes resulting in programmed ...

以拟南芥(Arabidopsis thaliana)近缘种小拟南芥(A。pumila)为试材，研究了新疆玛河流域6个种群内和种群间植株N、P、K、Na、Ca、Mg、Fe、Zn、Cu、Mn含量的变化格局。发现10种元素含量在种群间达到极显著差异，Na、Ca、Mg、Fe、Zn含量在种群内和种群间均变化较大，是小拟南芥适应异质环境变化较大的一类元素，而N、P、K、Cu、Mn含量在种群内变化较稳定，种群内植株营养成分含量的双重协变数量3～6对，K与Ca、Na，Na与Zn在6个种群内均表现出正相关，其中K ...

在一个控制试验中，旱柳经历了全不遮荫、部分遮荫和全部遮荫处理．比较了全不遮荫枝、全部遮荫枝、部分遮荫阳生枝(阳生枝)和部分遮荫阴生枝(阴生枝)的生长和生理特征，结果表明：阳生枝和全部遮荫枝的叶出生率和死亡率分别大于全不遮荫枝和阴生枝；遮荫处理明显影响净光合速率和夜间呼吸速率；阳生枝的分枝生物量、总校长度、枝叶生物量和枝叶重比显著大于全不遮荫枝，而阴生枝的分枝数、分枝生物量、叶面积、叶生物量、基茎、总校长度、枝叶生物量和枝叶重比都显著小于全部遮荫枝．

 毛竹(Phyllostachys pubescens)为具有重要经济价值的高大乔木状竹种。本文通过完全随机化区组施肥试验，探讨了施肥量及施肥方式对毛竹竹笋生长的效应。结果表明：在毛竹林内施肥可使出笋数和活笋数提高3倍以上，但对竹笋(幼竹)的个体大小却几乎没有改良效果。竹笋的存活率基本上是恒定的，不随施肥量的改变而改变。当地下茎(竹鞭)穿越养分分布不均的环境时，竹笋能有选择地大量长于养分丰富的地段而避开养分贫乏的地段。另一方面，跨越于有利地段和不利地段的竹(笋)株间有明显的生理整合作用 ...

In plants, only species with clonal growth are able to directly transfer resources between otherwise independent units of the same genetic individual. A simple conceptual model of plant performance as a function of internal resource supply a ...

The ability of clonal plants to transport substances between ramets located in different microsites also allows them to modify the plastic responses of individual ramets to local environmental conditions. By equalising concentrations of substances be ...

Clonal growth is characterised by the ability of plants to produce shoot and root units (ramets) which are genetically identical to the parent, and which are potentially independent. Ramets of clonal plants are likely to experience environmental hete ...