To study the combining ability of the milling and appearance quality traits of photoperiod- and thermosensitive genic male sterile (PTGMS) lines derived from C815S in rice,200 hybrids derived from the cross between eight PTGMS lines (505S,614S,706S,711S,712S,714S,715S and 718S) and 25 restorer lines by NC Ⅱ design were used as materials to analyze the combining ability of eight milling and appearance quality traits,including brown rice rate (BRR),milled rice rate (MRR),head rice rate (HRR),grain length (GL),grain width (GW),length-width ratio(...