Wide compatibility rice varieties(WCVs) LH422 and 02428, Indica and Japonica rice varieties were used in this test with cross combination types.

The results showed that F 1 of M-201/Nihonmasari had a quite stronger heterosis on tillers per plant and grains weight per plant, F 1 of WCVs with Indica or Japonica were of higher heterosis and of stronger fertility and would promote the rice output obviously, and LH422 had a stronger tendentiousness to Japonica, but 02428 has also a strong tend.

Genetic markers and genetic models for wide compatibility of rice;

Identification and genetic studies of wide compatibility of the rice anther cultured lines TG11 and H921;

But the genetics of the wide compatibility is controversial.

Exploitation　of　Heterosis　between　indica　and　japonica　by　Threeline　Method Ⅱ.Spikelet　fertility　of　threeparental　crosses　of　indica(japonica)　CMS　line　and　restoring　line　and　japonica　wide　compatibility　variety;

Wide compatibility (WC) is an important genetic tool for exploitation of inter-specific heterosis in rice (Oryza sativa L.

The analysis on yield potential of 8 hybrid combinations made from new wide compatibility lines showed that the hybrids, especially, the intersubspecific hybrids, had heterosis in dry matter production, sink capacity and grain yield.