C K Thankamani, P A Mathew, A. I. B. A. S. M. V. J. (2009). Polymerase chain reaction (PCR) based indexing of black pepper (Piper nigrum L.) plants against Piper yellow mottle virus. Journal of Spices and Aromatic Crops, 18(1), 28–32. Retrieved from https://updatepublishing.com/journal/index.php/josac/article/view/4934