Stages of flower bud development in Iris pumila and between-habitat morphological differences

Abstract

Previous studies revealed significant phenotypic plasticity and between-population differentiation in flower morphometric traits of Iris pumila in response to environmental variability between natural shade and exposed habitats. Since these habitats differed in flowering times as well, in this work we investigated at which stages of flower bud development differences between open and shaded habitats start to appear. Our analysis detected several groups of trait development patterns through the I. pumila bud development in two contrasting habitats, with stem length being the most suitable trait for application in further analyses of so-called “shade avoidance syndrome���.

Keywords

• Phenotypic plasticity
• between-population differentiation
• “shade avoidance syndrome”
• flower morphometric traits
• stage allometry
• Iris pumila