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Effect of Growth Retardants on α‐Amylase Production in Germinating Barley Seed
Author(s) -
Khan Anwar A.,
Faust Maria A.
Publication year - 1967
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1967.tb07209.x
Subject(s) - gibberellin , germination , gibberellic acid , chemistry , isopropyl , chloride , amylase , alpha amylase , hordeum vulgare , horticulture , botany , biochemistry , enzyme , biology , organic chemistry , poaceae
The effect of growth retarding compounds, (2‐chloroethyl)trimethylammonium chloride (CCC), 2‐isopropyl‐4‐dimethylamino‐5‐methylphenyl‐1‐piperidinecarboxylate methyl chloride (AMU‐1618), tributyl‐2,4‐dichlorobenzylphosphonium chloride (Phosfon D) and N‐dimethylamino succinamic acid (B‐995) on α‐amylase production in germinating barley seed was studied. Seeds were germinated in growth retardants in presence and absence of gibberellic acid (GA 3 ). CCC, AMO‐1618 and Phosfon D inhibitedα‐amylase production in germinating seed and the effect was reversed by GA 3 Phosfon D and AMO‐1618 were stronger inhibitors of α‐amylase production than CCC. CCC was by far the strongest inhibitor of all the other analogs tested. B‐995 was comparatively only slightly inhibitory. The results reported here, when viewed in light of the results of other workers, provide good evidence that CCC, AMO‐1618 and Phosfon D inhibit α‐amylase production by inhibiting the synthesis of gibberellin or gibberellin‐like hormone(s) during germination of barley seed. Consistent with other reports, B‐995 possibly acts by other mechanism (s).