一いち代だい雑ざっ種しゅ

noun

F1 hybrid; first filial generation hybrid

Technical term in genetics and breeding for the first-generation offspring of two distinct parent lines. Often used in agriculture and horticulture.

• このトマトは一いち代だい雑ざっ種しゅで、病びょう気きに強つよい品ひん種しゅです。

  This tomato is an F1 hybrid, a variety resistant to disease.