Publication Date
1985
Location
Kyoto Japan
Description
The effect of cytokinin on regrowth of Sorghum bicolor M. were examined. To determine the effect of applied cytokinin on growth of lateral buds, the lowest 10 cm portion of stems containing 6 visible lateral buds were used. The explants were cultured in the solutions of concentration of 1.0 to 15 .0 ppm cytokinin ( 6-benzyladenoprine riboside). In another, experiment, the endogenous cytokinin levels were analysed during regrowth period, using the plants grown under the shaded and non-shaded condition ( control). The length of lataral bud was the longest at the optimum cytokinin concentration of 5 ppm. The endogenous cytokinin activity was higher in the control than in the shaded plants. In the control plants, the cytokinin activity increased rapidly within 1 day after cutting and in the shaded plants increased slightly. The growth oflateral buds started to increase 2 days after cutting. In the shaded plants, about half of the plants were inhibited from outgrowing and the length of buds was shorter than in the control. The value of Brix at the time of cutting was significantly lower in the shaded than in the control plants. The cytokinin activity increased prior to growing of lateral buds. Thus, it is suggested that cytokinin releases buds from inhibition and rises up the outgrowth of lateral buds under the existence of carbohydrate reserves.
Citation
Nojima, H; Oizumi, H; and Takasaki, Y, "Effect of Cytokinin on Lateral Bud Development in Regrowth of Sorghum bicolor M." (1985). IGC Proceedings (1985-2023). 15.
(URL: https://uknowledge.uky.edu/igc/1985/ses3/15)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effect of Cytokinin on Lateral Bud Development in Regrowth of Sorghum bicolor M.
Kyoto Japan
The effect of cytokinin on regrowth of Sorghum bicolor M. were examined. To determine the effect of applied cytokinin on growth of lateral buds, the lowest 10 cm portion of stems containing 6 visible lateral buds were used. The explants were cultured in the solutions of concentration of 1.0 to 15 .0 ppm cytokinin ( 6-benzyladenoprine riboside). In another, experiment, the endogenous cytokinin levels were analysed during regrowth period, using the plants grown under the shaded and non-shaded condition ( control). The length of lataral bud was the longest at the optimum cytokinin concentration of 5 ppm. The endogenous cytokinin activity was higher in the control than in the shaded plants. In the control plants, the cytokinin activity increased rapidly within 1 day after cutting and in the shaded plants increased slightly. The growth oflateral buds started to increase 2 days after cutting. In the shaded plants, about half of the plants were inhibited from outgrowing and the length of buds was shorter than in the control. The value of Brix at the time of cutting was significantly lower in the shaded than in the control plants. The cytokinin activity increased prior to growing of lateral buds. Thus, it is suggested that cytokinin releases buds from inhibition and rises up the outgrowth of lateral buds under the existence of carbohydrate reserves.
