Tangkanchanapas, P. , Juenak, H.J., Saelor, N.S., Noochoo, S. and Reanwarakorn, K. 2015. Development of Detection Technique for Grapevine yellow speckle viroid 1 and 2 (GYSVd-1 and 2) Causing Grapevine Yellow Speckle Disease by RT-PCR method. Thai Agricultural Research Journal. 33, 1 (Mar. 2015), 68–84. DOI:https://doi.org/10.14456/thaidoa-agres.2015.9.