Complete loss of photoperiodic response in the rice mutant line X61 is caused by deficiency of phytochrome chromophore biosynthesis gene

Hiroki Saito, Yutaka Okumoto, Yoshihiro Yoshitake, Hiromo Inoue, Qingbo Yuan, Masayoshi Teraishi, Takuji Tsukiyama, Hidetaka Nishida, Takatoshi Tanisaka