Technical term used in botany and agriculture for the inability of plants to produce viable seeds or fruit.
The infertility of this variety is due to genetic factors.
High temperatures can sometimes cause infertility.
hybrid sterility; hybrid incompatibility
Compound of 不 (fu, 'not') + 稔 (nen, 'to bear fruit') + 性 (sei, '-ity'). The kanji 稔 is relatively rare and primarily used in botanical contexts.