品種改良

ひんしゅかいりょう

noun, no-adjective

•

selective breeding

品	goods, refinement, dignity, article, counter for meal courses
種	species, kind, class, variety, seed
改	reformation, change, modify, mend, renew, examine, inspect, search
良	good, pleasing, skilled

１９

せいきまつ

はじ

しょくぶつ

ひんしゅかいりょう

かがく

いちぶんや

Not until the end of the nineteenth century, did plant breeding become a scientific discipline