SEED GERMINATION PLASTICITY OF TWO ENDANGERED SPECIES OF FERULA IN THE CONTEXT OF CLIMATE CHANGE
Parvin Salehi Shanjani
psalehi1@gmail.comResearch Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization, P.O. Box 13185-116, Tehran, Iran (Iran, Islamic Republic of)
Amir Mousavi
National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran (Iran, Islamic Republic of)
Faeze Rasoulzadeh Farsad
Islamic Azad Universities, Tehran, Iran (Iran, Islamic Republic of)
Abstrakt
Ferula assa-foetida and F. gummosa, Apiaceae, are important endemic and endangered medicinal plants. Survival of the species is threatened by climate change, overexploiting (as source of oleo-gum resin and for-age) and lack of organized cultivation. Cultivation of these valuable medicinal plants is restricted by insuffi-cient domestication knowledge. Germination characteristics of different populations of Ferula taxa were studied with the aim of describing and comparing their responses to continuous cold stratification condition. Germination cues for the species were complex, with dormancy mechanisms present to restrict germination until cold stratification are fulfilled. Results indicated that a period of 4 weeks of stratification is sufficient for germination of F. assa-foetida, but optimal germination of F. gummosa require stratification for periods of 8 weeks. Both species were able to germinate at very low temperatures (4°C). Within-taxon differences in dor-mancy breaking and seedling emergence may interpret as local adaptations. The continued regeneration and propagation of the species in the wild will depend on the temperature and moisture status of the soil during winter and the maintenance of conditions suitable for stratification for an appropriate length of time.
Słowa kluczowe:
Dormancy, global warming, Iran, highland, local adaptationBibliografia
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Autorzy
Parvin Salehi Shanjanipsalehi1@gmail.com
Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization, P.O. Box 13185-116, Tehran, Iran Iran, Islamic Republic of
Autorzy
Amir MousaviNational Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran Iran, Islamic Republic of
Autorzy
Faeze Rasoulzadeh FarsadIslamic Azad Universities, Tehran, Iran Iran, Islamic Republic of
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