Plants, Free Full-Text
4.5 (457) In stock
The dry one-seeded fruits (cypselae) of the Asteraceae are often crowned with a pappus, an appendage of hairs or scales that assists in dispersal. It is generally assumed, but little investigated, that the pappus represents the outer floral whorl where the sepals are usually located. We analysed pappus–sepal homology in dandelions using micromorphological and floral gene expression analyses. We show that the pappus initiates from a ring primordium at the base of the corolla, heterochronic to the petals. Pappus parts form from this ring, with those in the alternipetalaous position usually being ahead in growth, referring to sepal identity. Tof-APETALLA1 expression increased during floret development and was highest in mature pappus. Tof-PISTILLATA expression was high and confined to the floral tissues containing the petals and stamens, consistent with expectations for sepals. Apart from the pappus, the dispersal structure of dandelion consists of the upper part of the fruit, the beak, which originates from the inner floral whorl. Thus, our results support the homology of the pappus with the sepals, but show that it is highly derived. Together with our floral stage definitions and verified qPCR reference genes, they provide a basis for evolution and development studies in dandelions and possibly other Asteraceae.
Plants An Open Access Journal from MDPI
21 Fun Letter Board Quotes For Plant Parents - Mama Bear Wooten
Plants, Free Full-Text, tua serie chicago fire
Plants, Free Full-Text
Feel free to talk to these plants they understand svg, png, eps, and dxf is a great shirt and printable wall art design., Instant download: Digital
Feel free to talk these plants they understand SVG is a funny shirt and garden sign design design
FREE* Understand Living Things: Plants
A high-foliage semi-dwarf biotype of Cannabis sativa, bred by the late, semi cannabis
Garden Plants SVG Bundle
Plant Swap Party
Full article: Gauging the trends of pseudogenes in plants, bäumlein 108 led
Plants, Free Full-Text, codigos de king legacy 4.8.1
4080-92133 Magdalena Charcoal Dandelion Floral Wallpaper
Flower Curtains Black White Dandelion Floral Botanic - Temu
- Cortona Inside-the-Waistband Holster
- Leggings Companies In Tirupur T International Society of Precision Agriculture
- Organic pregnancy and nursing bra sky blue
- Athletic Wear (Sport Bras/Leggings) – Bloomkins Shops (part of Haynes Meade Enterprises, LLC)
- Athletic Knit Hockey Jersey Style H6100_AD - Uniforms & Ink
- White 3/4 Sleeve Crop Top Form Fitting Lyla's Crop Tops for Women