Abstract
The growth of axillary buds (cotylars) was followed on decapitated pea seedlings with intact and reduced cotyledons. It was found that the production of dry matter of cotylars per 1 g of dry matter of cotyledons increased with the reduction of the mass of cotyledons. BA and GA promoted while IAA and TIBA reduced this production. BA applied on a naturally inhibited cotylar of decapitated pea seedlings induced a correlative reversal: the inhibited cotylar became a dominating one and vice versa. If the original size difference between cotylars was 12 mm, the correlative reversal was observed in 75 % of cases. If flax seedlings were deprived of one cotyledon, primary root and hypocotyl base the hypocotyl stump on the side of the remaining cotyledon bended due to an intensive growth. The application of IAA paste on the stump of the removed cotyledon established very often a growth (i. e. bending) balance between the effects of cotyledons and IAA paste: No bending of the hypocotyl stump occurred. This phenomenon was most frequent after the application of 0.12 % IAA paste.
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