ISSN : 0975-5276
EISSN : 0975-9174
A.T. PARMAR1, R.K. JAIMAN2*, S.K. ACHARYA3
1Department of Plant Pathology, C.P. College of Agriculture, S.D. Agricultural University, Sardarkrushinagar, 385 506, Gujarat, India
2Department of Plant Pathology, College of Horticulture, Jagudan, Mehsana, 382710, S.D. Agricultural University, Sardarkrushinagar, 385 506, Gujarat, India
3Department of Vegetable Science, College of Horticulture, Jagudan, Mehsana, 382710, S.D. Agricultural University, Sardarkrushinagar, 385 506, Gujarat, India
* Corresponding Author : jaimanrs74@gmail.com
Received : 14-10-2018 Accepted : 27-10-2018 Published : 30-10-2018
Volume : 10 Issue : 10 Pages : 1395 - 1399
Int J Microbiol Res 10.10 (2018):1395-1399
Keywords : Cumin, Fusarium oxysporum f.sp. cumini, variability
Academic Editor : Dr S. D. Bhingardeve
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to C.P. College of Agriculture, S.D. Agricultural University, Sardarkrushinagar, 385 506, Gujarat, India
Author Contribution : All authors equally contributed
Wilt caused by Fusarium oxysporum f. sp. cumini is the major disease of cumin. In all, fifteen isolates of Fusarium oxysporum f. sp. cumini were collected from cumin growing areas of North Gujarat and designated as Foc 1 to Foc 15 found pathogenic on cumin variety GC-2. Studies were made on cultural variations in colony growth, growth pattern colony colour and pigmentation. The colony diam ranged from 57.00 mm (Foc-12) to 88.75 mm (Foc-4). The growth pattern varied as thin flat to slight fluffy growth at middle and submerged at periphery, profuse fluffy growth at middle, moderately fluffy growth at middle and slight fluffy growth at middle and slight thread like spreading at periphery. Mycelium pigmentation among the fifteen isolates varied from white to pinkish white, orange to whitish orange, whereas substrate pigmentation varied from pale white to violet, orange, red. The length of microconidia varied from 7.29 µm (4.05-13.50 µm) to 11.47 µm (6.45-13.50 µm) , while the breadth varied from 2.72 µm (2.70-3.24 µm) to 4.75 µm (3.24-5.40 µm). The macrocoidia were 3 to 6 septate, straight, spindle as well as sickle shaped. The length of macroconidia varied from 18.63 µm (17.5-20.3 µm) in to 31.48 µm (24.3-40.3 µm), while the breadth varied from 3.00 µm (2.7-4.05 µm) to 4.75 µm (2.7-6.75 µm). Studies on pathogenic variability revealed that the disease intensity on cumin varied from 26.66 to 60.89 percent.
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