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 |
Clusterbean [Cyamopsis tetragonoloba (L.) Taub], is a drought resilient leguminous crop grown on sandy soils of arid and semi-arid regions. Clusterbean is infected by several fungal, bacterial and viral diseases but Alternaria blight disease caused by Alternaria cucumerina var. cyamopsidis (Rang. and Rao) considered as one of the most devastating diseases in the guar growing areas of Rajasthan. The main aim of this study was to know the effect of different carbon sources, various nitrogen sources, different range of temperatures and pH on the biochemical and physical dynamics with Czapex’sdox agar basal medium under in vitro conditions against Alternaria cucumerina var. cyamopsidis. Maximum mycelial growth was observed on glucose (85.00 mm) followed by maltose (61.66 mm), dextrose (59.66) as compared to sucrose used as control (89.66 mm). Similarly, maximum mycelial growth was observed by applying potassium nitrate (78.00 mm) as nitrogen source. In case of temperature, maximum mycelial growth (88.66 mm) was observed at 30oC followed by (34.00 mm) minimum mycelial growth at 20oC. Among all the tested over a wide range of pH 5.0 to 9.0, maximum mycelial growth (89.33 mm) was observed at pH 6.0 and minimum mycelial growth (37.33 mm) at pH 9.0 respectively.
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