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EFFECT OF GIBBERELLIC ACID ON THE GROWTH AND ANATOMY OF COLEUS BLUMEI, ANTIRRHINUM MAJUS AND SALVIA SPLENDENS
Author(s) -
BOSTRACK JACK M.,
STRUCKMEYER B. ESTHER
Publication year - 1967
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1967.tb05425.x
Subject(s) - coleus , antirrhinum majus , gibberellic acid , biology , botany , plant stem , salvia , elongation , xylem , peduncle (anatomy) , horticulture , germination , biochemistry , materials science , ultimate tensile strength , metallurgy , gene
S ummary Plants of Coleus blumei (Coleus), Antirrhinum majus (snapdragon) and Salvia splendens (Salvia) exhibited three common responses to foliar applications of 50 mg/1 aqueous solution of gibherellic acid (GA); elongation of the internodes, hyponasty and chlorosis. Elongation of subapical internodes was a result primarily of cell division in both Antirrhinum majus and Salvia splendens . Gibberellic acid at 500 mg/1 caused less elongation of the sub‐apical region than at 50 mg/1 and 100 mg/1 in S. splendens . Treated plants had a smaller stem diameter and more xylem parenchyma. Coleus blumei cuttings showed reduced rooting when treated with 50 mg/1 GA.