The below mentioned article provides notes on colchicine. In 1937 O.G. Eigsti first succeeded in inducing tetraploidy in cells of onion root tips by the chemical colchicine. This is an alkaloid obtained from the seed and corm of liliaceous plant Colchicum autumnale. In high concentrations the drug is highly toxic to cells. If used in concentrations as low as 0.01% [...]
The upcoming discussion will update you about the differences between Capitulum and Hypanthodium. Difference # Capitulum: 1. Receptacle consists of a flattened disc or upright column. 2. Receptacle is open from above. 3. The receptacle does not become fleshy. 4. The flowers are well exposed. 5. An involucre occurs at the base 6. Capitulum may be homogamous or heterogamous. 7. [...]
The upcoming discussion will update you about the differences between Catkin and Spadix. Difference # Catkin: 1. A spathe is absent. 2. Flowers are not protected. 3. Male and female flowers develop on the separate catkins. 4. No part of the peduncle is sterile. 5. Pollination agencies are not attracted by spathe and appendix. 6. Catkins usually occur in hanging [...]