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The promotive effect on subsequent germination of treating imbibed celery seeds with high temperature before or during drying
Author(s) -
BIDDINGTON N. L.,
THOMAS T. H.,
DEARMAN A. S.
Publication year - 1980
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/1365-3040.ep11587030
Subject(s) - germination , dormancy , desiccation , horticulture , seed dormancy , white light , biology , agronomy , chemistry , botany , materials science , optoelectronics
High temperature (32°C) prevented germination of celery seeds even if given after 4 d of germination induction at 17°C in white light, but germination occurred if the seeds were then returned to 17°C. Celery seeds incubated for 3 d at 17°C in white light and then air‐dried at 20°C germinated slowly when re‐sown at 17°C in the light, achieving only 24% germination after 21 d. Exposure of such seeds to 32°C prior to and during drying resulted in 50% germination after 3.6 d at 17°C in white light, with no loss in viability, compared to 5.7 d for seeds not given a germination induction treatment. If celery seeds were dried rapidly germination was poor, an effect which could be overcome by high temperature treatment. It is suggested that the mechanism which imposes dormancy at 32°C also conditions the seed to withstand desiccation damage.