National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Twelve isolates of Alternaria carthami collected from major safflower growing parts of Northern Karnataka differed significantly with respect to Cultural, morphological and physiological variation. Among different tested media, host leaf extract recorded significantly higher (87.19 mm) radial growth followed by Czapeck’s dox agar (81.92 mm) and Potato dextrose agar (81.25 mm). The conidia of different isolates shown variation with vertical (0-4) and horizontal (6-9) septum and also size varies from 29.6– 84.4 x 9.1 –16.3 μm to 50.3-101.3 x 10.2-24.3 μm. The fungus under sturdy grew best at temperature of 250 C recorded 290.18 mg dry mycelial weight whereas, optimum range was between 25-300 C. Similarly the pH ranges from 6.0-7.0 was optimum for good growth and development of A. carthami. The highest dry mycelial weight (331.50 mg) of the fungus was recorded with of pH 7.0 followed by pH 6.0 (278.77 mg) and pH 5.0 (236.38 mg) and the least dry mycelial weight of 145.66 mg was recorded with pH 9.
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