Seed Dispersal in Sunflower

The subject of seed dispersal inevitably leads to birds. For several reasons, sunflower seed is very attractive to many birds. The seeds have high levels of protein and fat that are useful to growth, molt, fat storage, and energy needs of birds. The seeds mature during the postbreeding season of most birds, when their energy demands are greatest. In some parts of the world, birds have many years of co-evolution with sunflower. Although most of the seed is consumed by the birds and becomes nonviable, an inevitable fraction is moved but not consumed. A certain percentage of seed always falls to the ground before and during harvest of commercial sunflower fields. This frequently results in volunteer plants in the next season.

0 0

Post a comment