Growth Regulator Induced Branching of Non-Pinched Poinsettias1
Open Access
- 1 October 1971
- journal article
- Published by American Society for Horticultural Science in HortScience
- Vol. 6 (5) , 457-458
- https://doi.org/10.21273/hortsci.6.5.457
Abstract
Foliar sprays of 6-(benzylamino)-9-(2-tetrahydropyranyl)-9H-purine (PBA) at 200 or 300 ppm and 6-benzylamino purine (BA) at 500 or 1000 ppm, caused the development of 90% or more of the lateral branches of ‘Annette Hegg’ and ‘Dark Red Annette Hegg’ poinsettia (Euphorbia pulcherrima Willd.) while 2 to 4 lateral branches developed from terminal stems of “Eckespoint C-l Red” near the position of the apical meristem. (2-Chloroethyl)phosphonic acid (ethephon) sprays increased lateral branch development significantly above the control treatment but less than PBA or BA while 2, 3, 5-triiodobenzoic acid (TIBA) produced only slightly more branches than the control.Keywords
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