ZAVISNOST TOKA DIFERENCIJACIJE OD POLOŽAJA VEGETATIVNIH KUPA NA NODUSU MLADAKA U VRSTA VOĆAKA IZ RODA PRVNUS

摘要

The following fruit species and cultivars were used for the study of differentiation of vegetative domes in leaf axils up to their transition to the generative stage od differentiation: plum cultivars Stanley, Pozegaca, Cacanska Lepotica; peach cvs Springtime, Redjune and Redhaven; apricot cvs Hungarian Best, Melitopolskava Ranyaya and Cehin; almond cvs Texas and Knez Chernomir; sweet cherries Stella, Burlat and Asenova Rana; sour cherries Cacanski Rubin and Sumadinka. The following regularity was observed on the basis of the histological analyses of the differentiation of vegetative domes on the shoot nodes; lateral vegetative domes in all nodes differentiate exclusively into generative buds or atrophy, whereas central vegetative domes depending on their position on the shoot, give rise to vegetative or generative buds. The dividing area between the vegetative and generative zones, which is formed by central vegetative domes, is conspicuous on fruit bearing branches. The number of nodes with vegetative, i.e. with generative buds differentiated in the central position on the node is primarily species-specific and cultivar-specific, although it is affected by several other factors, too.%Diferencijacijom vegetativne kupe zimskih vegetativnih pupoljaka po kretanju vegetacije formiraju se primordije listova sa vegetativnom kupom u pazuhu. Vegetativna kupa u pazuhu primordije lista deli se i formira tri vegetativne kupe - osnovu kolateralnih pupoljaka. Dalja diferencijacija ovih vegetativnih kupa uslovljena je njihovim položajem na nodusu. odnosno, mlađani: bočne vegetativne kupe svih nodusa diferen-ciraju isključivo u generativne pupoljke ili atrofiraju, dok centralne vegetativne kupe u zavisnosti od položaja duž mladara daju vegetativne ili generativne pupoljke. U radu je data histološka analiza procesa diferencijacije kolateralnih pupoljaka voćaka iz roda Prunus.