Abstract: Taking pollen staining and ordinary seed setting as fertility traits, the fertility behavior of Nongken 58S × 1514 F 2 population has been investigated under long day field condition in Wuchang (30°30′N) in 2001. The results indicated that the photoperiod-sensitive sterility of Nongken 58S is controlled by two pairs of main recessive genes in the nucleus, as well as modified by minor genes. Additionally,the results of correlation analysis on character show that plant height and heading stage, pollen st...