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Pakistan Journal of Biological Sciences
  Year: 2004 | Volume: 7 | Issue: 2 | Page No.: 182-186
DOI: 10.3923/pjbs.2004.182.186
 
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The Effects of Light and Some Presoaking Treatments on Germination Rate of St. John’s Worth (Hypericum perforatum L.) Seeds
Cuneyt Cirak, Ali Kemal Ayan and Kudret Kevseroglu

Abstract:
Light was found to be the most important factor affecting its seed germination. Under light conditions, soaking the seed for 30 min. in 50 ppm GA and 40°C hot water enhanced germination rate significantly. Under dark conditions, the seeds treated with KNO were the only ones germinating effectively. 3 The results suggest that Hypericum perforatum seeds exhibit both exogenous and endogenous dormancy. To over come former originating from a chemical inhibitor in exudate from capsule, washing with water, 40°C hot water and 50 ppm GA treatments; to over come later related with absence of light, 0.01 mol KNO3 treatment were recommended.
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How to cite this article:

Cuneyt Cirak, Ali Kemal Ayan and Kudret Kevseroglu , 2004. The Effects of Light and Some Presoaking Treatments on Germination Rate of St. John’s Worth (Hypericum perforatum L.) Seeds. Pakistan Journal of Biological Sciences, 7: 182-186.

DOI: 10.3923/pjbs.2004.182.186

URL: https://scialert.net/abstract/?doi=pjbs.2004.182.186

 
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