The following points highlight the seven main mechanisms of phloem transport in plants. The mechanisms are: 1. Pressure Flow 2. Diffusion 3. Cyclosis 4. Electro-Osmosis 5. Transcellular Streaming 6. Microfibrillar Model 7. Correlation of Structure and Function. Mechanism # 1. Pressure Flow: According to this hypothesis the metabolites transport is a physical phenomenon (Fig. 26-7). The bulb A has strong whereas [...]
In this article we will discuss about:- 1. Meaning of Fruit Ripening 2. Factors Affecting Fruit Ripening 3. Hormonal Regulation 4. Controlled Ripening 5. Artificial Fruit Ripening. Meaning of Fruit Ripening: There are several developmental phases through which the fruit passes and fruit ripening is one of them. In fact, ripening begins moment the growth of the fruit is completed. [...]
In this article we will discuss about the mechanism involved in releasing bud dormancy. Bud dormancy is unique to the perennials which remain dormant during the period of environmental stress. Most of the temperate trees require overwintering to release their buds from dormancy. Trees may require photoperiod to break their bud dormancy. Temperature regulates bud dormancy and environmental stimuli perceived [...]