Articles
TEMPERATURE, WASHING OF “SEEDS”, LIGHT AND HIGH TEMPERATURE DURATION ON GERMINATION RATE OF FLORENCE FENNEL “SEEDS”
Article number
362_21
Pages
173 – 180
Language
Abstract
Washed and not washed "seeds" of Florence fennel (Foeniculum vulgare Mill. var. azoricum Tell.) were germinated at constant day and night temperatures of 15, 20, 25, 30 and 35°C or at alternanting temperature of 25/15 and 30/20°C, in the light and in the dark or continuosly in the dark.
Germination at 30°C was 64%, no germination occurred at 35°C, while germination was similar at other temperature (81%). The speed of germination was greatest at 25 and 30/20°C. Washing and light improved germination slightly.
In another experiment mature seeds harvested on two successive occasions were tested at high temperature (35°C) for duration of 120, 96, 72, 48, 24, 18, 12, 6 and 0 h.
Germiation percentage of early-matured "seed" was higher than those of the later maturity and T50 was shorter compared to the control when high temperature durations was longer than 18 h.
Germination at 30°C was 64%, no germination occurred at 35°C, while germination was similar at other temperature (81%). The speed of germination was greatest at 25 and 30/20°C. Washing and light improved germination slightly.
In another experiment mature seeds harvested on two successive occasions were tested at high temperature (35°C) for duration of 120, 96, 72, 48, 24, 18, 12, 6 and 0 h.
Germiation percentage of early-matured "seed" was higher than those of the later maturity and T50 was shorter compared to the control when high temperature durations was longer than 18 h.
Authors
G. Damato, R.J. Downs, S. Vannella
Keywords
Florence fennel, temperature, washing, light, “seed” maturation, Weibull function
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