approximately 1300 bp DNA fragments of rDNA-ITS
were amplified from D. virgineum and Dendrobium
cv. Khaosanan. Partial nucleotide sequences of
the 1300 bp fragments (accession no. AB671740,
AB671741 for D. virgineum and AB671742,
AB671743 for Dendrobium cv. Khaosanan) were
deposited in the database. The sequences of the two
orchids were then aligned with rDNA-ITS region of
several plant species, and the new specific primers,