In this article we will discuss about:- 1. Genus of Cercospora 2. Mycelium of Cercospora 3. Reproduction. Genus of Cercospora: The form-genus Cercospora includes about 3,800 form-species. Majority of them are plant pathogens which cause leaf spot diseases of higher plants of economic value (Fig. 16.11 A). Commonly the leaf spot disease is called the tikka disease. C. personata and [...]
In this article we will discuss about:- 1. Introduction to Sphacelotheca 2. Symptoms of the Smut Caused by Sphacelotheca 3. Mycelium 4. Reproduction. Introduction to Sphacelotheca: Sphacelotheca causes smut of Sorghum (Jowar). In India, three species of the genus attack Jowar plants causing serious diseases. The grain smut or covered smut of Jowar is caused by S. sorghi, the loose [...]
In this article we will discuss about the life cycle of ustilago with the help of suitable diagrams. Mycelium of Ustilago: According to the nuclear behaviour, the mycelium of Ustilago passes through two distinct stages of development. These are the primary and secondary mycelia. The primary mycelium consists of hyaline, slender, septate hyphae with a single haploid(n) nucleus in each [...]