| Autor: |
Khan, Muhammad F. A., Riaz, Abid, Ahmad, Ishaq, Ullah, Saif, Raja, Muhammad U., Shaheen, Farid A., Ahsan, Rafia, Zakria, Muhammad |
| Předmět: |
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| Zdroj: |
Pakistan Journal of Phytopathology; 2022, Vol. 34 Issue 2, p255-261, 7p |
| Abstrakt: |
Brown leaf spot (BLS), a disease caused by the fungus Bipolaris oryzae (teleomorph: Cochliobolus miyabianus), is a major economic concern in rice-growing regions around the world including Pakistan, but it has gotten little attention in Pakistan. All well-known Basmati rice cultivars are affected by BLS. During 2020-21, surveys were conducted in nine rice-growing districts of Punjab province, Pakistan, from various fields of rice, infected samples were collected. BLS was found in all of Punjab's surveyed districts. According to the findings, eighty-five rice fields were surveyed, and 81 were found to be infected with BLS. Gujranwala has the highest BLS incidence (51%), Hafzabad (50%), and Narowal (47%). The highest severity rate was 75% in Super rice in district Gujranwala at Nathu Siwiya road, while the lowest was 5% in basmati rice in Gujrat. Based on morphological characterization, the pathogen was identified as B. oryzae. The findings showed that BLS has been present in rice-producing regions of Pakistan, particularly in the Basmati region of Punjab, for many years. To reduce inoculum levels and yield losses, resistant Basmati cultivars must be introduced. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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