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科学家寻味丢失的玫瑰花香

Source: 恒星英语学习网  Onion  2010-10-17  我要投稿   论坛   Favorite  

Professor Givik Clark refers to this tiny rose as his proof of concept. In just a couple of weeks, he will know if 3 long years of research have paid off. The flower has been genetically egineered to give it back something it lost for generations of breeding.

Back in the old days, roses all have fragrance, but since 1950s, about 80% or 90% of flowers that are on the market like roses don't have any fragrances.

3 years ago, Clark decided to put the perfume back into the rose. The fragrance in all flowers including roses comes from the volatile chemicals they produce. Each of which has a genetical marker. But Clark had a problem. The rose is one of the most genetically complex flowers in the world. And its genome has not yet been mapped, so it