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 |
Cultural and morphological characters of different Xap isolates were studied on nutrient agar media. Five isolates collected from different locations differed in respect of size of colony, shape of colony and colour of bacterial colony. Isolates Xap-1 and Xap-4 developed medium to large bacterial colonies. The isolates Xap-1 and Xap-3 developed small to medium sized bacterial colonies, whereas, Xap-5 produced small bacterial colonies. The effect of varied temperature levels on the growth of Xap was studied. All the Xap isolates were tested at temperature 280C and 370C on NA agar medium. The temperature of 280C was found optimum for the growth of the pathogen as significantly maximum number of colonies was observed at this temperature. Maximum growth of Xap isolates was observed at pH 6.5 and 7, whereas, moderate growth of Xap-2, Xap-3, Xap-4, Xap-5 isolates was observed at pH 6.0 except Xap-1 which showed less growth at pH 6.0. All Xap isolates showed maximum growth at 1 per cent salt concentration, whereas, all these isolates failed to grow at 2 per cent and 3 per cent salt concentration.
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