Germination Assessment of Various Growth Types of Iranian Bitter Fennels at Different Light and Temperature Regimes
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Authors
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Kaivan Bahmani
University of Tehran
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Azam Akbari
University of Tehran
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Ali Izadi Darbandi
University of Tehran
Keywords:
germination, light, temperature, fennel, short termAbstract
Bitter fennel is an important medicinal plant that is commonly used in all over of the world. Iran has various fennel cultivars with different agro-morphological characteristics, so it can be considered as a central and original diversity for this plant. In this study, germination of fifteen bitter fennel ecotypes (short, middle and long term) at different light and temperature regimes was assessed. Results showed bitter fennel ecotypes had no significant preference to germinate at a special light/darkness regime, however short term ecotypes produced the most vigorous seedling in a wide range of light quantity. Fennel ecotypes could not germinate in temperatures lower than 10 and higher than 30 ˚C but in this range, short term fennels again produced vigorous seedlings with more ability to germination related to others. In darker regimes all the ecotypes had higher germination speed with longer hypocotyl and radicles. As an applied conclusion, optimum condition for germination of this plant was detected under darkness and 20 °C.
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