Vol. 12, Issue 10 (2023)

Author(s):
Akash Bevanur, Jayalakshmi SK and Manthesha HD

Abstract:
Sesame (Sesamum indicum L.) is one of the most ancient oilseed crop and rich source of oil, protein, calcium as well as phosphorus, which is widely naturalized in tropical regions around the world. Leaf blight of sesame caused by Alternaria sesami is an important disease inflicting heavy losses. Keeping in view, the present investigation was carried out to characterize the pathogen isolates of parts of Kalyana Karnataka based on cultural and morphological differences. Out of 20 isolates, AsR20 and AsK9 isolate had the highest number of horizontal and vertical septa, respectively. Whereas AsR20 and AsKp18 isolate had the highest conidial length and width, respectively. The maximum beak length was found in AsB3 isolate, while the maximum mycelial width was found in AsKp13 isolate. With respect to different media, the maximum mycelial growth of the test fungus was endorsed by potato dextrose agar medium (66.78 mm).