Greenhouse evaluation of branching, leaf yield and biochemical compositions of Stevia rebaudiana Bertoni to decapitation and foliar application of abscisic acid and fluridone.

摘要: Stevia is a herbaceous plant containing non-sugar sweeteners that could be regarded as successor to sugar for diabetics. However, there are some problems with the cultivation of stevia, especially in greenhouse, including unbranching and low sweetening agents. To overcome this issue, an experiment was designed increase not only branching leaf production but also sweetness. Therefore, novel strategy using abscisic acid (0, 50, 100, 150 μM), its inhibitor, i.e. fluridone μM) decapitation apical meristems applied. Results showed when stevia decapitated, dormant buds responded application fluridone. Under these conditions, axillary were developed branches. As well leaf, total dry weight, soluble sugars steviol glycosides (SGs) significantly increased. In addition, interaction (50 100 had highest positive effects on growth rather than their sole applications. indicated removed terminal dominance over limited period time re-established branches, whereas influence 50 µM long term number shoots greater. Since costly sweetener, results study used greenhouses, where seems reasonable terms economic aspects.