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The Effect of Single and Repeated Gibberellic Acid Treatment on Internode Number and Length in Dwarf Peas
Author(s) -
SPIKER STEVEN,
MASHKAS AMINA,
YUNIS MUAZZAZ
Publication year - 1976
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.1399-3054.1976.tb05016.x
Subject(s) - plant stem , gibberellic acid , biology , horticulture , gibberellin , botany , germination
In long‐term experiments comparing the results of single and repeated treatment of dwarf peas with gibberellic acid, both once‐treated and weekly‐treated plants formed more internodes than control plants. The initial high rate of internode formation in the once‐treated peas dropped rapidly reaching that of control plants three weeks after treatment. Weekly‐treated plants maintained a higher rate of internode formation. The ratio of internode lengths of once‐treated plants to control plants was high (over 3) for the internodes which were elongating during or shortly after the single treatment but dropped rapidly and approached unity in later‐developed internodes. The ratio of internode lengths of weekly‐treated plants to control plants continued to be high throughout the experiment.