The effect of environmental heterogeneity on clonal behaviour of Prunella vulgaris L.

摘要: We studied the response of a clonal herb, Prunella vulgaris, to its position in gap, identity neighbouring graminoid species, and simulation competition for light. The growth characteristics, such as stolon length, internode length number stolons were recorded competitive environments with bunches Molinia caerulea, Juncus effusus Nardus stricta different types gaps manipulative field experiment. Two pot experiments effect reduced light low red/far red ratio (R/FR) on plant characteristics. In both we monitored orientation treatment divided into two parts (competition/shaded or gap/unshaded). Methods circular statistics used evaluate orientation. had equivalent effects vegetative – plants longer internodes than growing gaps. treatments other characteristics (amounts leaves) not significant. treatment, responded by accumulation leaves vegetation removed part, avoided vegetated part. biomass decreased R/FR irradiance treatments, but 26% compared control. Centroids uniformly distributed contrary where they showed preference unshaded No dependency was found experiments. vulgaris heterogeneous environment distinguished favourable less conditions produced more shorter under conditions. This resulted concentration resource acquiring structures patches.