Paper Information

Journal:   IRANIAN JOURNAL OF BIOLOGY   Spring-Summer 2003 , Volume 14 , Number 1-2; Page(s) 46 To 53.
 
Paper: 

AUTECOLOGICAL ASPECTS OF HYPERICUM PERFORATUM L. (CLUSIACEAE) IN SOME AREAS OF KHORASAN PROVINCE, IRAN

 
 
Author(s):  EJTEHADI H., KIANMEHR H., NOTGHY-MOGHADAM R.
 
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Abstract: 
This study was carried out in certain parts of Khorasan province to investingate some autecological aspects of Hypericum perforatum L. an important medicinal plant species. Geographical distribution of the plant in Khorasan was determined. Morphology regeneration strategy. phenology, life form as well as effects of topographical factors including altitude. aspect and slope on the plant characteristics such as its density and cover percentage was investigated. Soil parameters such as pH, EC, texture. total nitrogen and phosphorus content were analyzed. Seed germination. dry matter content of the organs were also determined. Ecological indicator value system of Borhidi along with the knowledge obtained for the species was used to develop ecological indicator values for this species. The results showed that H. perforatum is regenerated either by seed or mostly by runners in the base of the stem and grows well in non saline. calcareous and light soils with the pH ranging from 7.5 to R. Phenological investigations of the plant in the area showed that germination begins in March. flowering at June. fruit setting at the late June. seed forming at the first July and seed ripening by the mid October. Topographical factors such as aspect and slope had greater effects than altitude on distribution of the species. Ecological indicator values assigned to the species based on soil nitrogen content. soil moisture. salinity level and light of the habitat were 5-7. 3-5. 0 and 4-6. respectively.
 
Keyword(s): AUTECOLOGY, HYPERICRTM PERFORATUM, PHENOLOGY, ENVIRONMENTAL FACTORS
 
References: 
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