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DETERMINATION OF HIT NUMBERS FROM DOSE‐RESPONSE CURVES FOR PHYTOCHROME CONTROL OF SEED GERMINATION (LACTUCA SATIVA CV NORAN)
Author(s) -
Blaauw O. H.,
BlaauwJansen G.,
Elgersma O.
Publication year - 1976
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1976.tb01072.x
Subject(s) - lactuca , phytochrome , germination , botany , red light , horticulture , biology , chemistry
SUMMARY The dose‐response curves for the induction of thermo‐dormant (pretreated at 37 °C) Lactuca seeds and of far‐red dormant (pretreated by long exposure to far‐red light) Lactuca seeds by red light show a difference in shape. From the shape of the curves it is calculated that for initiation of germination in thermo‐dormant seeds at least 2 quanta (λ = 660 nm) must be absorbed per active unit, in far‐red dormant seeds at least 7 quanta.