品種 ひんしゅ改良 かいりょうじゃなかったです
hinshukairyōjanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 品種改良

1. Wasn't improving the breed.; Wasn't doing selective breeding.

Past/Perfective
Negative
Polite
Casual Register