The Influence of Plant Growth Regulators on Increase of Microtuber Induction in Potato

Abstract

The current shortage of potato seeds and high price of imports necessitates the
local production of potato seeds. The influence of plant growth regulators (PGRs) on
increasing microtuber induction in potato was investigated at Chiang Mai Royal Agricultural
Research Center (CMRARC), Chiang Mai during 2014-2015. Potato cv. Chiangmai 60-2
in solid MS media was chosen for this study. Results revealed that MS liquid media in
temporary Immersion Bioreactor (TIB) combined with BAP induced potato shoots within
three to four weeks after subculturing by one node cutting. Effect of PGRs on microtubers
production of potato in agar media was also evaluated. The potato tissue plantlets were
grown on MS agar with and without PGRs (BAP (6-benzylaminopurine), TDZ (Thidiazuron),
Kinetin, Mannitol and Coconut juice) Results showed that BAP treatment gave highest
microtuber number and weight and also fresh weight and dry weight of the plantlets.