Search results
Results From The WOW.Com Content Network
Pollination by flies, known as myophily, is the second most prevalent method of pollination among orchids, involving pollinators from twenty different dipteran families. [13] These flowers typically emit scents reminiscent of decaying organic materials, excrement, or carrion, which attract flies seeking food or suitable sites for egg deposition ...
For instance, hand-pollination is used with date palms to avoid wasting space and energy growing sufficient male plants for adequate natural pollination. Because of the level of labor involved, hand-pollination is only an option on a small scale, used chiefly by small market gardeners and owners of individual plants.
The complex mechanisms that orchids have evolved to achieve cross-pollination were investigated by Charles Darwin and described in Fertilisation of Orchids (1862). Orchids have developed highly specialized pollination systems, thus the chances of being pollinated are often scarce, so orchid flowers usually remain receptive for very long periods ...
Dactylorhiza hatagirea is a species of orchid generally found growing in the Himalayas, from Pakistan to SE Tibet, at altitudes of 2,800–4,000 metres (9,200–13,100 ft). It is locally called 'salam panja' or 'hatta haddi'.
A pollinium (pl.: pollinia) is a coherent mass of pollen grains in a plant that are the product of only one anther, but are transferred, during pollination, as a single unit. [1] [2] This is regularly seen in plants such as orchids and many species of milkweeds (Asclepiadoideae). Usage of the term differs: in some orchids two masses of pollen ...
The early description of this pollination system was by Charles Darwin, though at the time, he believed the bees were females. [12] Not all orchids utilize euglossines as pollen vectors, of course; among the other types of insects exploited are other types of bees, wasps, flies, ants, and moths.
The meaning of these gorgeous flowers varies depending on the hue. Purple lilacs represent the first emotions of love while magenta lilacs symbolize love and passion, perfect for a more serious lover.
Hand pollination is the most reliable method in commercially grown vanilla. [9] Vanilla plantations require trees for the orchids to climb and anchor by its roots. [9] The fruit is termed "vanilla bean", though true beans are fabaceous eudicots not at all closely related to orchids.