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 [...]
In this article we will discuss about the physiological processes associated with abscission. During the autumn leaves become yellow, black and pale and red in colour. Similarly, seasonal defoliations and the different shedding habits of the deciduous and the evergreen plants are of common occurrence. The plants may be facultative deciduous which conform to the intermediate pattern. The change in [...]
In this article we will discuss about the physiology of adventitious root formation. The process of development of adventitious roots in stem cuttings can be divided in three stages: the initiation of group of meristematic cells i.e. root initials; the differentiation of these initials into root primordia and the development and emergence of new roots including stem rupturing, formation of [...]