TAILIEUCHUNG - Cultural and morphological characterization of pyricularia grisea causing blast disease of rice

Rice (Oryza sativa L.) is the world’s most important crop and a primary source of food for more than half of the global population. In India, rice is a staple food for more than 65 per cent population. However, the crop is subjected to attack by many diseases among which rice blast caused by the fungus Pyricularia oryzae is one of the most economically important diseases. The pathogen was isolated from the rice field of Uttar Banga Krishi Viswavidyalaya Farm, purified, and characterized based on morphological and cultural characters. Highest mycelial growth of mm and mm were observed in oat meal agar (OMA) medium at 2 and 6 days after inoculation (DAI) respectively, whereas growth of mm was observed in potato dextrose agar (PDA) medium at 4 DAI. The mycelial growth was highest at 300C at 2 ( mm) and 6 ( mm) DAI whereas at 4 DAI, maximum growth of mm was recorded at 250C. The best nitrogen and carbon sources for the pathogen in vitro were found to be potassium nitrate and glucose, respectively whereas the best pH for the growth of the pathogen was found to be 6. The conidia in infected leaf sample were three-celled with an average size of × μm. The conidia on rice grain were predominantly two celled with an average size of × μm. Conidial production was not observed in any of the media tested including PDA, OMA. However, on rice grain, the fungus produced conidia at 55-60 days. | Cultural and morphological characterization of pyricularia grisea causing blast disease of rice

• Nông nghiệp
• Potassium nitrate
• Pyricularia grisea causing blast disease
• Morphological characterization
• Cultural and morphological characterization
• Rice grain
• Glycine betaine
• Rice (Oryza sativa L )
• Role of glycine betaine
• Potassium nitrate in drought tolerance
• Proline accumulation in rice
• Salicylic acid
• Seed priming
• Rainfed condition
• Potassium nitrate on growth
• Effect of salicylic acid
• Tạp chí y học
• Nghiên cứu y học
• Giảm nhạy cảm ngà
• Kem đánh răng chứa potassium nitrate
• Tẩy trắng răng
• Shelf life
• Potassium permanganate
• Silver nitrate chemicals
• Shelf life of guava fruits
• Guava fruits
• Bài viết về y học
• Nhạy cảm ngà
• Kem đánh răng
• Calcium Sodium Phosphosilicate
• Strontium Acetate
• Fruit quality
• Di potassium phosphate
• Monopotassium phosphate
• Preharvest foliar applications
• Farmyard manure
• Pressmud compost
• Nitrate N
• Available Phosphorus and available Potassium
• Laboratory incubation
• Chemicals on flowering
• Fruiting in litchi
• Foliar spray of chemicals
• Calcium chloride
• Calcium nitrate
• Potassium sulphate
• Days after harvest (DAH)
• Spring maize
• Heat stress
• Dates of planting
• Foliar application
• Spring maize (Zea mays L )
• Sorbitol and agro chemicals
• Physical parameters
• Cultivars to agro chemicals
• Pre harvest
• Calcium sulphate
• Potassium chloride
• Pre harvest spraying treatments of chemicals
• Chemical science
• Biological science
• High fructose corn syrup
• Work demonstrates
• Promising alternative