抄録
1. Studies were made on the crossability in reciprocal crosses between Abelmoschus escu, leletus and Abel. Manihot, and the characters and meiotic division in F1 hybrids. 2. The set % of pods was higher in Abel. esculentusxAbel. Maleihot than in the reciprocal : cross. 3. The number of seeds per pod was larger in Abel. esculentusxAbel. Manihot than in the, reciprocal cross and these numbers were smaller respectively compared with those in the mother plants which were selfed. 4. The size of pods and seeds obtained in Abel. esculentusxAbel. Manihot vras smaller than those of the selfed mother while those obtained in the reciprocal cross were similar tothose of the selfed mother. 5. The appearance especially the colour of seed coat of F1 seeds and their content obtained in Abel. esculentusxAbel. Manihot were similar with those in the selfed mother. Those of F1 seeds obtained in reciprocal cross were mostly lustreless and empty comp. ared with those in the selfed mother.
