Search results
Results from the WOW.Com Content Network
A 2004 study performed near an Oregon field trial for a genetically modified variety of creeping bentgrass (Agrostis stolonifera) revealed that the transgene and its associate trait (resistance to the glyphosate herbicide) could be transmitted by wind pollination to resident plants of different Agrostis species, up to 14 kilometres (8.7 mi ...
Animal pollinators are needed for the reproduction of 90% of flowering plants and one third of human food crops [2] [3] [4] Domestic honeybees pollinate approximately $10 billion worth of crops in the U.S. each year. [5] Bee poisonings from pesticides result in annual losses of $14.3 million. [6]
This leads to shifts in pollination syndromes and to some genera having a high diversity of pollination syndromes among species, suggesting that pollinators are a primary selective force driving diversity and speciation. [5] [6] Ophrys apifera is an orchid species that has a highly evolved plant-pollinator relationship. This specific species ...
Plants fall into pollination syndromes that reflect the type of pollinator being attracted. These are characteristics such as: overall flower size, the depth and width of the corolla, the color (including patterns called nectar guides that are visible only in ultraviolet light), the scent, amount of nectar, composition of nectar, etc. [2] For example, birds visit red flowers with long, narrow ...
With the decline of both wild and domestic pollinator populations, pollination management is becoming an increasingly important part of horticulture.Factors that cause the loss of pollinators include pesticide misuse, unprofitability of beekeeping for honey, rapid transfer of pests and diseases to new areas of the globe, urban/suburban development, changing crop patterns, clearcut logging ...
In the event that an animal uses a different pollination source, plants can become reproductively isolated. [ 1 ] : 193 Pollinator isolation is a specific form of sexual isolation. [ 4 ] The botanist Verne Grant distinguished between two types of pollinator isolation: mechanical isolation and ethological isolation.
For the plant, the pollinizer, this can be an important mechanism for sexual reproduction, as the pollinator distributes its pollen. Few flowering plants self-pollinate ; some can provide their own pollen (self fertile), but require a pollinator to move the pollen; others are dependent on cross pollination from a genetically different source of ...
Without pollination, the main sources of human nutrition will suffer. [11] [12] Further, it is not just crops that are in danger, because 80-95% of non-crop plant species require some form of pollination as well. [13] However, research shows that when the proportion of native pollinator plants in an area increases, so too does pollinator ...