The Influence of Growth Regulators and Temperature on Flowering of Seed Propagated Geraniums1
Year: 1970
Type: article
Abstract: The influence of B-Nine (2500 ppm), F 529 (1250 ppm), TIBA (250 ppm), IAA (100 ppm), Ethrel (1000 ppm), Cycocel spray (1475 ppm) and soil drench (2950 ppm) were investigated on seed propagated geranium, cv. ‘Carefree Scarlet’. IAA had no effect on date of flowering, plant height or branching, but TIBA sprayed plants flowered significantly earlier and Ethrel sprays significantly delayed it. Both TIBA and Ethrel sprays reduced geranium height at flowering and stimulated branching. A Cycocel soil drench caused earlier flowering, but sprays had no effect on flowering. In growth chambers with 12-hour light periods of 75 F and 12-hour dark periods of 70 F, 60 F, or 50 F, earliest flowering was at 70 F with 5 and 15 days delays at 60 F and 50 F. The number of nodes of terminal stems at flowering increased from 14 at 70 F to 16 at 60 F and 17 at 50 F night temperatures.
Source: HortScience
Authors: William J. Carpenter, William H. Carlson
Institution: Michigan State University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
Estimated APC paid: $3,000
OpenAlex ID: W1461288336