Phenotypic evaluation of the two parents, F1 and the RIL population in three environments.

Note:a, TT: flowering time, estimated as the sum of effective temperature from sowing to days to pollen shed;PS: photoperiod sensitivity, calculated as: PS = (TTLD−TTSD)/(DLLD−DLSD), where TTSD is the thermal time of each RIL from sowing to days to pollen shed in short-days of Sanya, TTLD is the thermal time of each RIL from sowing to days to pollen shed in long-days, DLSD is the average day length of photoperiod sensitivity stage in short-day environment, DLLD is the average day length of photoperiod sensitivity stage in long-day environment.b, Statistical test for difference between two parents at 0.05 (*) and 0.01 (**) levels of probability; ns, not significant.c,HB2, the broad-sense heritability.