阿拉斯加以其夜长昼短的阴冷冬季与长日照的夏季而著名。
Alaska is known for its dark cold winters and long daylight summers.
接受一定时期的短日照处理，再移入长日照条件下，会发生花序的逆转现象。
Flower reversion occurred after treated in short day for some time, and then transferred into long-day condition.
经13 d短日照处理后移至长日照下，约50%的植株发生开花逆转，另外50%的植株形成短的顶端花序；
About 50% of plants in SD13d-LD treatment reversed from reproductive development to vegetative growth, and other plants in this treatment bore short terminal racemes.
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