In this article we will discuss about:- 1. Occurrence of Pythium 2. Predisposing Factors of Pythium Debaryanum 3. Mode of Infection 4. Symptoms 5. Economic Importance 6. Salient Features. Occurrence of Pythium: P. debaryanum is the classic example of the most common species of Pythium which causes the widespread "damping off" disease of tobacco, tomato, mustard, chillies and cress seedlings. [...]
In this article we will discuss about the life cycle of pythium with the help of suitable diagrams. Somatic Phase in Pythium: The mycelium (Fig. 6.18 A) represents the vegetative or somatic phase of the fungus. It is well developed, and coenocytic. It presents a white, fluffy appearance and consists of long rather slender, hyaline much branched hyphae which are [...]
In this article we will discuss about the asexual and sexual reproductive structure of pythium. Asexual Reproduction of Pythium: 1. It takes place by means of zoospores formed in small, globular or oval, multinucleate zoosporangia. 2. A zoosporangium is present singly and terminally (Fig. 61A) or intercalary (Fig. 61B) on the sporangiophore and remains separated from rest of the thallus [...]