| This study was carried out at Phitsanulok Rice Research Center during 2008-2010 aiming for minimizing rice blast severity by growing 2 rice lines differed in blast resistance to broaden rice genetics. In 2008, resistance screening was performed on 2 sets of blast resistant rice lines derived from KDML105 having different donors of resistance developed by Ubon Ratchathani Rice Research Center. Ten selected blast isolates were inoculated one at a time onto 21 day-old seedlings at 50,000 spores/ml and kept at 25 o C in the controlled room for 7 days before assessment. Since selection criteria were based on resistance to half of the tested isolates and an ideal pair should have similar maturity, therefore, none of the lines have been selected. In 2009, the... |
