Relationship Between GA Application and Phyllomorph Length in Streptocarpus

Abstract

Three cultivars and 3 selfed lines of Streptocarpus × hybridus Voss plants proved to be highly variable via cluster analysis. Yet 5 of the 6 populations examined showed a significant, negative, linear correlation between flowering and phyllomorph length at the time of treatment with 25 μg GA4+7. There was no treatment effect on peduncle length or the time span separating flowering of the first and 2nd, 2nd and 3rd, or first and 3rd inflorescences.

Effects of Nitrogen Fertilization on Vegetative, Flowering, and Asexual Propagation Characteristics of Streptocarpus ×hybridus

“…The scope of Streptocarpus xhybridus Voss, research has gradually grown since Lawrence (11,12) first examined flower color inheritance. Additional aspects of genetics and breeding (2,3,7,9,19), propagation (6,7,10,16,19), postharvest physiology (1), and response to exogenous growth regulators (4,14,15) have been described in varied detail, and all have contributed to improved commercial acceptance. There remains a need for nutritional guidelines for large-scale production.…”