In Thailand, rice (Oryza sativa L.) is one of the most important
economic crops for both domestic consumption and for exporting
and Thailand was ranked the number one rice exporter globally in
2014 when total milled rice exported from Thailand was 10.97
million t and worth USD 5439 million (Thai Rice Exporters
Association, 2015). Chettanachit et al. (2009) discussed the distribution
and impact of dirty panicle disease also known as seed
discoloration, which is one of the most important constraints for rice