The germinationg percentage of F₁ seeds, fertility and other characters of the specific hybrids between Abel.esculentus and Abel.Manihot.

Abstract

The percentages of germination of F₁ seeds, dyad cells, good pollen grains and the fcrtility of F₁ piants obtained by crossing between 8 varieties of Abel. esculerdu's and I variety of Abel. Manihot wcre different with the varieties of the mother plant, ranging ca.2.7%-83.3%, ca. 83.7 %-99.3%, ca. 28.9%-90.8% and ca. 0.00-0.22 per pod respectively. The F₁ strains showing the good percentage in the gerrnination of F₁ seeds were also superior in the other characters, while those tnat werepoor in the germination were also inferior in the other characters.