Fertility restorer

Ifr             Induction of fertility restoration / inhibitor for Rf-1
                (Sano and Eiguchi 1991)
R1*           Fertility restoration-1 / nuclear gene for 'WA' cytoplasm
                (Bharaj et al. 1991)
R2*          Fertility restoration-1 / additive action (Bharaj et al. 1991)

Rf-1         Pollen fertility restoration-1/Rf-1a, Rf-1b,Rf-1c, Rf-1d, Rf-1e
                (chr.l0, Shinjo 1975, 1990, Fukuta et al.1992)
Rf-2         Pollen fertility restoration-2 (chr.2, Shinjo et al. 1974)
(Rf-x)
Rf-3*       Fertility restoration (WA cytoplasm) / duplicate (chr.7, Lu & Zhang 1986,
(Rf-1)       Zhang et al. 1994b, Teng & Shen 1994)

Rf-4*       Fertility restoration (WA cytoplasm) (chr.l, Lu & Zhang 1986,
(Rf-2)       Zhang et al. 1994b, Teng & Shen 1994)

Rf-a, b, c   Pollen fertility restoration /complementary (Maekawa 1982)
Rf-a,b,c,d Pollen fertility restoration /complementary (Maekawa 1982)
Rf-ak        Pollen fertility restoration-ak (Yabuno 1977) (Rf-j )