Effect of abscisic acid on growth correlation in vitis vinifera L

Abstract

The inflorescences of woody grape vine cuttings usually atrophy if bud burst precedes emergence of adventitious roots (Mullins 1967). Roots are a site of cytokinin synthesis (Kende 1964; Itai and Vaadia 1965), and the ascending sap of vines is rich in endogenous cytokinin (Loeffler and Van Over beek 1964; Nitsch and Nitsch 1965; Skene and Kerridge 1967). The inflorescences of vine cuttings are retained and continue to grow if roots are initiated before bud burst, and the inflorescences of non-rooted cuttings are retained when treated with synthetic cytokinins (Mullins 1967). © 1970 CSIRO.