Search results
Results from the WOW.Com Content Network
Epilobium hirsutum seed head dispersing seeds. In spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant. [1] Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, such as the wind, and living vectors such as birds.
The seeds are fleshy, short-lived, and germinate rapidly where they land. Being poisonous and distasteful, they are not attractive to candidate transport animals, so the rolling diaspore is a very effective dispersal strategy for such plants. Genera with this means of seed dispersal include Ammocharis, Boophone, Crossyne and Brunsvigia. [17]
The main mode of seed dispersal for native panic is wind. As the seeds mature and dry out, the spikelets can easily break off with adequate wind and get blown away. [4] The dried spikelets, and dried, dead stalks can easily form clusters and become a fire hazard. [1]
The patterns of seed dispersal are determined in large part by the specific dispersal mechanism, and this has important implications for the demographic and genetic structure of plant populations, as well as migration patterns and species interactions. There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals.
The name derives from the Ancient Greek word pappos, Latin pappus, meaning "old man", so used for a plant (assumed to be an Erigeron species) having bristles and also for the woolly, hairy seed of certain plants. The pappus of the dandelion plays a vital role in the wind-aided dispersal of its
Anemochory is dispersal of units by wind. Wind is a major agent of long distance dispersal that helps to spread species to new habitats. [20] Each species has its own "wind dispersal potential". This is the proportion of dispersal units (seeds, spores or pollen) that travel farther than a specific distance travelled under normal weather ...
The tissue in the fruit of the Ecballium elaterium that surrounds the seeds is made of large, thin-walled cells facilitating the propulsive release of seeds by "squirting". [ 4 ] [ 7 ] Pressure to expel the seeds is created by the increased concentration of a glucoside called elaterinidin in the sap of the fruit tissue's cells, leading to a ...
The fruit resembles a tumbleweed in that it is wind-dispersed and tumbles, an unusual mechanism of seed dispersal (see Diaspore (botany)). Anemone virginiana was also given the common name "Thimbleweed" due to its pistil resembling the shape of a thimble. This plant is very durable in different weather conditions, ranging from part shade to sun ...