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Proceedings of the International Plant Propagator's Society

Vol. 25

Title:
ADVANCES IN PLANT HORMONES

Author:
William J. Greenhalgh

pp: 259-261

Abstract:
Research and development activities involving plant hormones contribute significantly to the information explosion. This seems to be especially true of horticultural crops where even minor manipulations of the natural sequence of growth and development produce substantial benefits either aesthetically or commercially.

Sifting through the rubble of this explosion of information, one can observe some pattern emerging to indicate that mans’ knowledge (i.e. organized information) and mans’ wisdom (i.e. his use of that knowledge) are making slow but steady progress. Plant physiologists classify the active agents into: (a) auxins, (b) gibberellins, (c) cytokinins, (d) inhibitors, and (e) ethylene.

In terms of their application to agricultural production, Weaver devotes separate chapters to: (a) rooting and propagation, (b) dormancy, (c) flowering, (d) fruit set and development, (e) senescence (f) abscission, (g) size control and related phenomena, and (h) weed control. Clearly the matrix of

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