Role klonální integrace v kompetici rostlin

Duchoslavová, Jana

Clonal growth enables plant to replicate rooting units (i.e. ramets), adding another hierarchical level to plant modularity. Clonal growth is very common, at least in the temperate flora, and widespread over the angiosperm phylogenetic tree. Different clonal growth forms have specific sets of clonal traits that determine their performance in response to environmental conditions and under competition. Clonal integration is one of the important clonal traits and is associated with a number of other clonal functions. Integrated ramets can translocate resources and signals by connecting clonal organs, such as horizontal stems or roots. Such integration is particularly important for young developing ramets, but it may persist and help developed ramets cope with environmental heterogeneity. Clonal integration at both early and later stages of ramet development may be an important factor affecting plant competition and has been shown to promote expansion into vegetated areas in some species. However, competition is complex and differs aboveground and belowground. Translocation of carbon and nutrients under competition may differ accordingly, but very little is known about this. The costs and benefits of clonal integration have been predicted by theoretical models. However, there is considerable variability in the...

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