Taking the hypericum perforatum seeds as material,using relieving dormancy method,the dormaney property of bypericum perforatum seed and the effect of different light condition on the seed germination were studied. It is found that the seed germination has light-degendence after the dormaney relieved,the impact is produced at the existed factors;continual illumination in and dark interruption in different luminous intensity,illumination and light nature in different absorption time. It is also showed that hypericum perforatum seed has dormant property and light-dependence. The light has restraining effect when light quantity is over 14.904mol · m-2. The light acceptor of seed is the photo sensitive pigment and the seeds light sensitive period is in 12h.%以贯叶连翘种子为材料,探讨贯叶连翘种子的休眠特性及不同光照条件对其种子萌发的影响.采取体眠解除及不同光照条件的种子萌发实验,结果发现,当休眠解除后该种子萌发仍需要光,不同光强下连续光照/光暗间断、光量,不同吸涨时间下光照、光质均能对该种子的萌发产生影响.表明贯叶连翘种子具有休眠特性和需光性,光量超过14.904rmol·m-2后,光照具有抑制效应.该种子的光敏感期在12h以内.其光受体为光敏色素.
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