In this article we will discuss about:- 1. Discovery of Ethylene 2. Occurrence of Ethylene 3. Movement 4. Biosynthesis 5. Structure and Activity 6. Regulatory Action 7. Mechanism of Action 8. Functions 9. Tropic Movements 10. Growth 11. Dormancy. Discovery of Ethylene: It took several years to establish before it became evident that ethylene (C2 H4) was a natural plant [...]
In this article we will discuss about the growth regulators in flowering. Phytohormones and Flower Initiation: In recent years considerable information has accumulated to demonstrate that growth regulations change the flowering behaviour of several plant species. Further the effect of growth regulators varies with the plant species, its age, concentration of growth regulators employed as well as temperature, etc. The [...]
The following points highlight the two main approaches of photoperiodic time measurement. Approach # 1. The Conception of Physiological Clock of Erwin Bunning: This is also known as biological clock or oscillating clock. Bunning performed several experiments in Kalanchoeblossfeldiana. In this species the petals open in the morning and close down in the evening. It is also possible to maintain [...]