D-a             Dominant lethal / complementary (Chu & Oka 1970)
D-b             Dominant lethal (Chu & Oka 1970)
D-l*            Dominant lethal-l from 0. longistaminata/ complementary (chr.2,
                    Ghesquiere and Causse 1992)
D-2*           Dominant lethal-2 from 0. sativa (chr.11, Ghesquiere and Causse 1992)
hca-1           hybrid chlorosis-a / complementary (Sato et al. 1984)
hca-2           hybrid chlorosis-a (Sato et al. 1984)
Hwa-1         Hybrid weakness ( lethal )-a / complementary (Oka 1957a)
(L-l-a)
Hwa-2         Hybrid weakness (lethal )-a (Oka 1957a)
(L-l-b)
hwb-1          F₂ weakness-b/ complementary (Chu & Oka 1972)
(w'-a)
hwb-2          F₂ weakness-b (Chu & Oka 1972)
(w'-b)
Hwc-l          Hybrid weakness ( lethal )-c / complementary (Amemiya & Akemine 1963)
(L-2-a)
Hwc-2         Hybrid weakness ( lethal )-c (Amemiya & Akemine 1963) (L-2-b)