Stress induced ethylene evolution and its possible relationship to auxin-transport, cytokinin levels, and flower bud induction in shoots of apple seedlings and bearing apple trees

摘要: Mechanically induced stress (MIS) was imposed on apple shoots by bending horizontal upward and vertical downward its effect internal ethylene evolution, polar auxin transport cytokinin levels studied. Induction of caused a significant rise in production the tissues under stress, decreased increased percentage floral buds shoots. There were only quantitative differences between up or down In general, unstressed had higher rates exhibited lower compared to which may explain reason for flower bud formation. Parallel trials with seedlings using action inhibitor silver-thiosulphate (STS) confirmed that concentrations be responsible reduction endogenous basipetal Z/ZR It is suggested main stimulae mechanically responsiveness plants regulated changes levels. Flower formation some these phytohormonal changes.