Vol. 6, Issue 5 (2018)
Morphological and pathogenic variation of Alternaria alternata causing fruit rot of chilli
Author(s): Kajal D Jankar, Ekta D Bagde and Renuka R Tatte
Abstract: Cultural and morphological variability of fruit rot of chilli caused by Alternaria alternata on five different media viz., potato dextrose agar, oat meal agar, Czapek’s Dox agar, V-8 agar and corn meal agar. Six isolates of A. alternata selected for morphological variability studies of different chilli growing districts of Maharashtra. Isolates showed variation in morphology like, radial growth, colony colour, colony margin, size of conidia, shape and septation of conidia and sporulation on five different media. Radial growth ranging 75.65 to 31.66 mm, conidia were muriform, broadly rounded base to obclavate, oval in shape. Conidial size was in the range of 43.30-27.7×12.4-8.3 μm on different media. Trasverse and longitudinal septation of conidia 7-9 to 3-4, 0-3 to 0-1, respectively. Colour of colony were greenish to greenish brown, grayish black, creamy white with regular to irregular margin on different media. Good sporulation i.e 2.8 was noticed in PDA media. The ripe chilli fruit inoculated with A. Alternata. All the isolates are pathogenic, while Isolate Aa5 (Nagpur) was the most virulent isolate and Aa4 (Akola) was the less virulent isolate.
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How to cite this article:
Kajal D Jankar, Ekta D Bagde, Renuka R Tatte. Morphological and pathogenic variation of Alternaria alternata causing fruit rot of chilli. Int J Chem Stud 2018;6(5):843-848.
