The below mentioned article provides a study-note on the brassinosteroids in plants. Brassinosteroids or brassins are a recently discovered group of steroids that have distinct growth promoting activity in some plants especially in stems. These compounds were first isolated in 1979 from bee collected pollen grains of rape (Brassica napus), a mustard (hence the name brassins). Brassinosteroids are now known [...]
Let us make an in-depth study of the polyamines in plants. After reading this article you will learn about 1. Discovery and Chemical Nature of Polyamines 2. Occurrence of Polyamines in Plants 3. Important Physiological Effects of Polyamines in Plants 4. Biosynthesis of Polyamines and 5. Deactivation of Polyamines. Discovery and Chemical Nature of Polyamines: Polyamines are a group of [...]
The following points highlight the two types of vitamins. The types are: I. Fat Soluble Vitamins and II. Water Soluble Vitamins. Vitamin Type # I. Fat Soluble Vitamins: (1) Vitamin A (Axerophthol): Yellow vegetables, fruits, tomatoes, green leaves of lettuce, cabbage etc., are good plant sources of this vitamin. Chemical structure of this vitamin which is a highly unsaturated alcohol [...]