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晚香玉(Polianthes tuberosa)是石蒜科多年生草本植物,原产墨西哥,现在是普遍栽培的花卉。它虽无绚丽的色彩和妩媚的姿态,却朴质、优雅,给人以恬适的感觉。尤其在夏秋之际,每到夜幕降临,它那朵朵白色小嗽叭样的花散发出沁人肺腑的芳香,清幽、纯正,由淡而浓、由近而远,所以又被叫作夜来香、月下香,受到人们的喜爱。我们知道,花儿之所以生香,是由于花朵中存在含有香味物质的精油,当精油分子挥发出来时,我们就会闻到花香。精油一般存在于花的油细胞中,多以游离状态存在,白天和夜间都在不断挥发。那么晚香玉为什么要到夜晚才生香
Polyphen tuberosa is a perennial herb of the genus Amaryllidaceae, native to Mexico and now a commonly cultivated flower. Although it has no brilliant colors and charming gesture, it is simple and elegant, giving a feeling of comfort. Especially in the summer and autumn, every nightfall, its blossoming white little horny flower exudes a fragrant fragrance, quiet, pure, from light and thick, from the near and far, it is also called night Incense, moon incense, by people’s favorite. We know that the reason why flowers are fragrant is that the flowers contain essential oils containing fragrances. When the essential oil molecules evaporate, we smell the flowers. Essential oils generally present in flower oil cells, mostly in the free state, volatile during the day and night. So why do Tuberosene fragrant until night