The following points highlight the top five evolutionary trends on Oomycetes. 1. There is progressive evolution from the aquatic to land habitat. Members of orders Lagenidiales, Saprolegniales and Leptomitales are chiefly aquatic. The advanced order Peronosporales includes aquatic, amphibious and terrestrial forms. 2. The representatives of this class show a whole range from saprophytes (Saprolegnia) to facultative parasites (Pythium) and [...]
In this article we will discuss about:- 1. Occurrence of Albugo 2. Signs and Symptoms of the Disease Caused by Albugo 3. Mycelium 4. Fine Structure of Haustorial Apparatus 5. Economic Importance 6. Salient Features. Contents: Occurrence of Albugo Signs and Symptoms of the Disease Caused by Albugo Mycelium of Albugo Fine Structure of Haustorial Apparatus in Albugo Economic Importance [...]
In this article we will discuss about:- 1. Occurrence of Sclerospora 2. Symptoms of the Disease Caused by Sclerospora 3. Thallus 4. Control of the Disease. Occurrence of Sclerospora: The genus is represented by 15 species of which 13 are known to occur in India. All the species of Scierospora are obligate parasitise causing diseases in members of Family Graminae. [...]