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EFFECTS OF ABSCISIC ACID ON OXYGEN UPTAKE AND RNA SYNTHESIS IN GERMINATING LETTUCE SEEDS
Author(s) -
Bex J. H. M.
Publication year - 1972
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.1438-8677.1972.tb00772.x
Subject(s) - radicle , imbibition , abscisic acid , germination , oxygen , rna , protein biosynthesis , chemistry , botany , biology , biochemistry , organic chemistry , gene
SUMMARY Effects of abscisic acid on radicle protrusion, oxygen uptake and total RNA synthesis were investigated. It was found that ABA had no effect on oxygen uptake before radicle protrusion. RNA synthesis was only inhibited by ABA after 9 hours of imbibition. Extrapolation of radicle protrusion time curves from seeds treated with various concentrations of ABA suggested that ABA did not affect the initiation of cell extension, but inhibited growth of the radicle.