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ENDOGENOUS GROWTH FACTORS AND FLOWER FORMATION IN WEDGWOOD IRIS BULBS
Author(s) -
PEREIRA A. S. RODRIGUES
Publication year - 1964
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.1438-8677.1964.tb00157.x
Subject(s) - primordium , gibberellin , bud , botany , biology , horticulture , chemistry , biochemistry , gene
A bstract1 The changes in growth substance composition of buds and scales of Wedgwood iris bulbs during flower formation were determined. 2 The scales contain several thermostable flower forming substances which, in the course of a low temperature treatment, are transported to the bud. 3 The flower forming substances have physiological and chemical properties of gibberellins. 4 Compounds with RF 0.3, 0.45‐0.50 and 0.75 in 80% isopropanol successively accumulate in the bud and attain maximum concentrations at successive stages of differentiation of the floral primordium. 5 The significance and possible mode of action of the gibberellins in flower formation is discussed.