| Brown planthopper resistant promising line, SPR94007-PTT-27-2-9-3-2, is photoperiod insensitive line derived from single cross of SPR1/IR64 made at Suphan Buri Rice Research Center in 1994. Its F2-F6 progenies had been grown and selected at Pathum Thani Rice Research Center where fixed line, SPR94007-PTT-27-2-9-3, were obtained. In 2008, this line and other breeding lines were tested for brown planthopper (BPH) resistance and intra-station yield trial. SPR94007-PTT-27-2-9-3 was not selected to be tested in further step due to its unsatisfied yield, but it was only 1 of 2 lines that had no damage of BPH in greenhouse testing. Thus, remained seedlings of those 2 lines had been transplanted in pots and separately harvested panicle by panicle and pedigree... |
