When prominent melon breeders Known-You wanted to grow large quantities of parent plant seeds, due to the firm's limited growing area they had to ask other farmers to grow parent plants and gather the seeds on their behalf. Since the parent plants were often stolen, the company had the added expense of growing the male and female plants separately.
以育種瓜類聞名的農友公司就是因為要大量生產父、母本種子，但本身農地有限，委託農民種植、採種，父、母本因此常在田中被偷挖走，農友只好把同種的父、母本分兩地種植，增加了管理成本。