亜種[ashu] subspecies
異機種[ikishu] heterogenous equipment
異種[ishu] different kind (species, variety)
育種[ikushu] (plant) breeding
育種家[ikushuka] (plant) breeder

育種所[ikushujo] (plant) nursery
一種[isshu] species
一粒種[hitotsubudane] an only child
種違い[tanechigai] half-brother
艶種[tsuyadane] love affair

するが良い[surugaii] had better ...
どうしたら良い[doushitaraii] what's the best thing to do?
愛想の良い[aisonoii] affable
運良く[unyoku] luckily
温良[onryou] gentle

佳良[karyou] good
改良[kairyou] improvement
改良点[kairyouten] point(s) for improvement
格好の良い[kakkounoii] attractive
感度良好[kandoryoukou] loud and clear