抄録
The abortion of fertilized ovule, which results in failure of normal seed formation, occurred more frequently in Virginia type of peanut as compared with Spanish type. Majority of such abortion exceeded absolutely at upper ovule over that at lower one and also at quite early stage of fruit formation, that is, within 10 days after penetration of gynophore into soil. Through microscopical examination it was revealed that the abortion of this kind was quite different from the case of unfilled fruit formation which had been described in the previous reports, and a cause for abortion was considered the unbalanced or inactive intake of nutrient substances into young ovules.
