人们往往发现，苦味除黄瓜外，其他瓜类蔬菜，也常常出现此类现象。如：西葫芦、部瓜、笋瓜、甜瓜等。它们在植物分类上都属葫芦科植物．原产热带和亚热带地区。其中黄瓜原产印度。这类植物的祖先“野生瓜”含有大量苦味物质——葡萄糖普及生物碱。在人类长期典选育中，把含有 People often find that, in addition to bitter cucumber, other melons vegetables, but also often such phenomena. Such as: zucchini, melon, winter squash, melon and so on. They are all cucurbits in plant taxonomy. Native tropical and subtropical regions. Which cucumber origin India. The ancestor of these plants, “Wild Melon,” contains a large amount of bitter substances - glucose popularize alkaloids. Long-term human selection in education, to contain