There is a single class, Oomycetes, which is further divided into 7 orders. We shall study some genera belonging to the orders Saprolegniales, Pythiales and Peronosporales. Order Saprolegniales (Water Molds): The term 'water molds' is generally used for genera belonging to this order. The zoospores are formed in zoosporangia. A peculiar feature of this order is the production of two [...]
In this article we will discuss about the life cycle of saprolegnia with the help of suitable diagrams. Mycelium of Saprolegnia (Fig. 6.2 A): The mycelium is coenocytic and branched. During the vegetative phase it is composed of two kinds of hyphae: (i) Rhizoidal or intramatrical hyphae: These are short hyphae which penetrate the substratum. They anchor the mycelium and [...]
In this article we will discuss about the life cycle of achlya with the help of suitable diagrams. Mycelium in Achlya: It is in the form of a white, tangled mass consisting of branched hyphae growing in all directions. Some of the hyphae, which are short, penetrate the substratum. They anchor the mycelium and absorb nutrient materials. The hyphae are [...]