Which disease is caused by Sclerospora graminicola?
Which disease is caused by Sclerospora graminicola?
One of the most important diseases of pearl millet is downy mildew, also known as green ear, caused by the fungus Sclerospora graminicola (Sacc.) J. Schröt that destroys much of the crop every year. The resting spores of the fungus in the soil constitute the primary source of inoculum.
What is the scientific name for downy mildew?
Peronospora sparsa (downy mildew)
When was Sclerospora Graminicola first reported in India?
The first evidence of pathogenic variation in S. graminicola was reported in 1973 when HB 3 was found resistant at Mysore, but susceptible at some other locations in India, and two distinct races from Mysore and Gulbarga were easily differentiated on HB 3.
What is the causal organism of downy mildew of maize?
Summary of Invasiveness Peronosclerospora philippinensis, a causal pathogen of maize downy mildews, is one of the major maize diseases reported in some maize-growing countries, especially in the Philippines.
What do you mean by red rot of sugarcane?
Red rot is a very serious disease of sugarcane. It was first described by Went in 1893 (56). Since then it has been found to cause epiphytotics in different countries. The surest symptom of the disease is the reddening of the internal internodal tissues with crossbars of white patches in the reddened area.
What type of organism is downy mildew?
Downy Mildew, caused by Pseudoperonospora cubensis, is an oomycete that is not a true fungus. It thrives in wet or very humid conditions as a water mold. Downy mildew can infect all cucurbits including cucumber, melon, pumpkin and squash.
How are downy mildew differentiated?
Explanation: Downy Mildew is commonly caused by members of the oomycete genus Sclerospora, but other pathogens include species of Bremia, Peronospora, Phytophthora, Plasmopara, and Pseudoperonospora. Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants.
Which genus Sporangiophores Dichotomously branched at right angle?
Plasmopara – The branches and their subdivisions occur typically at right angles and are irregularly spaced. Peronospora and Pseudoperonospora- The sporangiophores are dichotomously branched at acute angles, and taper to gracefully curved pointed tips on which sporangia are borne and do not produce zoospores.
What type of pathogen is downy mildew?
Which fungus causes systemic downy mildew of sorghum?
P. sorghi causes sorghum downy mildew, which can result in severe economic losses of both sorghum and maize. It has been a particularly invasive pathogen: it was introduced to the Americas where it has spread on both sorghum and maize cau…
