Diallel cross experiment among sikkimese rice tester varieties oryza sativa indica and oryza sativa japonica 9. mutual relationships between the 2 on 34 characters

Katayama, T.C.

Memoirs of the Faculty of Agriculture Kagoshima University 17(26): 37-52

1981


Accession: 005145565

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Abstract
In the reciprocal relations of 34 characters, the whole strain levels and the respective strain level showed significant relations in 64.7% (22/34 cases) and 37.5% (204/544 cases), respectively. Character-sets of the unhusked and husked grains showed significant relations through the whole components, but in comparison it showed no significance at all. The former 2 sets might be regarded as the stable and suitable indices in analyzing strain- or variety-differentiations. In the 2 respective characters of 47 combinations, the whole strain levels and the respective strain level showed significant relationships in 85.1 (40/47 combinations) and 63.8% (480/752 combinations), respectively. Comparing the values found in the parents and the respective strain averages, heterosis was recognized in 57.8% (610/1056 cases).