Biomics

We studied the effect of density of planting of lettuce plants on the content of auxins in shoots and roots. Auxins have been shown to be almost evenly distributed between roots and shoots of single plants, while the increase in the number of plants per pot decreased percentage of roots auxins accompanied by inhibition of their growth. Treatment of the plants with an inhibitior of polar auxin transport led to similar response: inhibition of root growth and an increase in the shoot-to-root mass ratio indicating importance auxin distribution between shoots and roots for the regulation of growth response to the presence of competitors.

lettuce, competition, growth, auxins, N-(1-Naphthyl)phthalamic acid

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