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 […]
Photoperiodic Time Measurement | Plant Physiology
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