Articles
EFFECT OF ALTERNATING AND CONSTANT TEMPERATURE ON SEED GERMINATION OF CHELCHERAGH LILIY (LILIUM LEDEBOURII) IN IRAN
Article number
673_35
Pages
287 – 292
Language
English
Abstract
Lilium ledebourii (Chelcheragh lily) is distributed in the Damash of Ammarloo and Kalchooleh of Dorfak areas of Guilan province in Iran.
Seed germination was promoted at constant 17°C or 14°C and inhibited at constant 26°C or 29°C. When seeds were treated initially at 29°C or 26°C followed by 14°C and 17°C, respectively, germination percentage was increased.
While when seeds were exposed to alternating temperature (initially at 14°C and 17°C followed by 29°C and 26°C), seed germination was the lowest or inhibited.
In other experiments, seeds were pre-treated for 0, 1, 2, 3, or 4 weeks at 3-5°C, then planted in pots and placed at constant 15, 20, 25, or 30°C. Germination percentage was the lowest at 15 and 25°C and completely inhibited at constant 30°C, regardless of the duration at 3-5°C. Only when seeds were pre-treated at 3-5°C for one week, germination percentage was the highest at 20°C. Also, germination percentage at constant 20°C without cold temperature was about 50%. Germination percentage was recorded as a bulblet and root forming per seed.
Bulblets were initially dormant, and leaves did not emerge.
When bulblets were treated at 3-5°C for 12 weeks, sprouting of seed bulblets prodeeded directly at 20°C.
Seed germination was promoted at constant 17°C or 14°C and inhibited at constant 26°C or 29°C. When seeds were treated initially at 29°C or 26°C followed by 14°C and 17°C, respectively, germination percentage was increased.
While when seeds were exposed to alternating temperature (initially at 14°C and 17°C followed by 29°C and 26°C), seed germination was the lowest or inhibited.
In other experiments, seeds were pre-treated for 0, 1, 2, 3, or 4 weeks at 3-5°C, then planted in pots and placed at constant 15, 20, 25, or 30°C. Germination percentage was the lowest at 15 and 25°C and completely inhibited at constant 30°C, regardless of the duration at 3-5°C. Only when seeds were pre-treated at 3-5°C for one week, germination percentage was the highest at 20°C. Also, germination percentage at constant 20°C without cold temperature was about 50%. Germination percentage was recorded as a bulblet and root forming per seed.
Bulblets were initially dormant, and leaves did not emerge.
When bulblets were treated at 3-5°C for 12 weeks, sprouting of seed bulblets prodeeded directly at 20°C.
Publication
Authors
M.N. Padasht Dehkaei, A. Khalighi, R. Naderi, A. Moosavi
Keywords
Lilium ledebourii, Chelcheragh lily, seed germination, epicotyl dormancy
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