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EFFECT OF HEAT TREATMENT ON THE RESPIRATION RATES OF STIGMAS OF SELF‐INCOMPATIBLE AND SELF‐COMPATIBLE OENOTHERAS
Author(s) -
Hodgdon Alan L.,
Hecht Adolph
Publication year - 1975
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.1438-8677.1975.tb01009.x
Subject(s) - respiration , respiration rate , degree (music) , zoology , biology , chemistry , botany , physics , acoustics
SUMMARY Measurements were made of the rates of respiration of self‐incompatible stigmas of Oenothera which had been heat treated for 5 minutes at 45°C and 50°C, and of self‐compatible stigmas at 50°C. Fifty‐degree treatment, which causes partial inactivation of self‐incompatibility, lowered the respiration rate to about one‐half that of the untreated controls. Forty‐five‐degree treatment, which does not affect self‐incompatibility, had little effect on the respiration rate. Heat treatment had less effect on the respiration rates of self‐compatible Oenotheras . The correlation between the effect of heat treatment of lowering respiration rate and overcoming self‐incompatibility indicates that normal metabolic level may be necessary for self‐incompatibility.