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 |
Citrus is one of the most economically important fruit crop in India. Commercially grown citrus group in India includes sweet orange, acid lime and mandarin. Various factors constraint fruit production globally but the major factor is diseases caused by fungal, bacterial and viral pathogens. Citrus yellow mosaic virus (CYMV), a viral disease and Citrus greening bacterium (CGB), a bacterial disease are the two most important diseases that are impending fruit production throughout the world. The combined incidence of the diseases in Andhra Pradesh was found to be 32 to 68%. A rapid and reliable duplex PCR is developed for the simultaneous detection of CYMV and CGB in Sathgudi sweet orange plants. Initially total DNA was isolated from mixed infected field samples for both pathogens were detected simultaneously through duplex PCR. Using duplex PCR two different fragments of 726 bp and 451 bp specific to CYMV and CGB respectively were simultaneously amplified. The consistent result of duplex PCR was compared with simplex PCR for detection of each pathogen. The duplex PCR method developed in the present investigation proved to be highly sensitive, economic and reliable method for detection of both CYMV and CGB in citrus pants. The technique would also prove highly useful in disease survey, nursery certification and quarantine applications.
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