Official source · Urban Farm DB

農林水産省 知的財産課「種苗をめぐる情勢」（令和5年3月）— 野菜種子は国内流通の約9割を海外生産・輸入、種苗産業の市場規模は約2,600億円

This source is cited by the column “F1 seed scatters in the second generation — what stops it is biology, not law.” This page records the connection before you continue to the external source.