Flower female

Marijuana contains a psychoactive resin called D9 tetrahydrocannabinol (THC) and cannabinol. Most resin is found in the flowering female plant. When smoked or ingested it produces a feeling of relaxation, euphoria, and happiness. Other possible effects include poor concentration and decreased reaction time. Used medically under the names dronabinol and marinol, it has been prescribed as an antiemetic and as an appetite stimulant and has also been used... 

Flowers of some orchids mimic both the appearance and sex pheromone of virgin females of certain species of bees or wasps. This sexual deception results in pollination by male hymenoptera that would not normally visit flowers. Japanese honey bee drones (Apis cerana japonica) cluster on the oriental orchid (Cymbidiumpumilum) while on their mating flights [ 134]. By comparing volatile profiles of orchids and the female hymenoptera they mimic, or by GC-EAD and GC-MS analysis of orchid volatiles, several compounds have been identified that may mediate this attraction for the solitary bee Andrena nigroaenea [135, 136] and the scoliid wasp Campsoscolia ciliata [135]. 

Cannabis is usually dioecious (male and female flowers on separate plants). The female plants are widely believed to contain more THC than the males, but this varies from strain to strain. In India, the males are apparently weeded out before... 

Cycads pollination by insects may be one of the earliest forms of insect-pollination. Like conifers, cycads bear their reproductive cells in cones rather than flowers. Individual cycad plants are either male or female, male plants having pollen cones and female plants, seed cones. Fertilization requires transfer of pollen grains from pollen cones to seed cones. The role of insects in this process has received attention in a cycad commonly known as the cardboard palm (Zamia furfuracea). This is a handsome horticultural plant with... 

Several products are derived from the cannabis plant (table 10.1). Hashish and charas are the dried resin exuded from the female flowers. These have the highest content of A9-tetrahydrocannabinol (TFIC) at 10-20% and have the most potent psychoactive effects. Ganja and sinsemilla are the dried tops of the female plants, which averages 5-8%. Marijuana and bhang are derived from the rest of the plant and have the lowest TFIC concentration (2-5%). 

Hashish, charas Dried resin exuded from female flowers 10-20%... 

Most species of angiosperms produce hermaphroditic flowers. The unisexuality in some plants most often results from developmentally programmed abortion or selective reduction in sex organ primordia. In dicots, higher levels of auxins, cytokinins, and ethylene usually correlate with female sex expression and in most of them the femaleness is mainly promoted by ethylene. ... 

Ethylene is the major feminizing hormone in most cucurbits showing a wide range of sex phenotypes with some exception of watermelon in which a steady increase in ACS isozymes transcript level in male flowers compared with female flowers has been reported. ... 

In most cases, cucurbit plants bear flowers of two types, either male or female, and the latter must be pollinated by the former to set fruit. Female flowers have a tiny fruit behind the flower that swells once pollination has taken place. 

What to do Identify the cause and then remedy if possible. Causes include frost at flowering time lack of suitable pollinators in the vicinity (apples and pears) lack of flowers as a result of inappropriate pruning male flowers not open at same time as female flowers (cucurbits) poor weather at flowering, hindering pollinating insects dry soil. 

Female flowers of dioecious trees are better defended than males. RuflFed grouse, Bonasa umbellus, prefer male flowers of quaking aspen, Populus tremuloides, in winter, and leaves of male specimens in summer (Svoboda and Gullion 1972). Ruffed grouse also feed more on male trees of balsam poplar (Bryant etal, 1991). 

Cannabis sativa L. (hemp) is a dioecious annual flowering plant. Marihuana is the Spanish name for the dried leaves and female flowering tops of the hemp plant. Hashish is the resin which originates from these female flowering tops. The hemp s natural homeland is most likely in the regions north of Afghanistan and the Altai mountains of southern Siberia (Russia). It is not clear when and where cultivation of hemp Cannabis sativa L.) started. It seems most likely that the cultivation of hemp may have originated in northeastern Asia (north and north-east China and southeastern Siberia). 

Two major components have been detected from adult male western flower thrips, Frankliniella occidentalis Pergande (Thysanoptera Thripidae) that are not present in females. They were identified as (i )-lavandulyl acetate and neryl (5)-2-methylbutanoate. The catch of males and females on traps was significant by the butanoate alone or by a 1 1 blend of the acetate and the butanoate, but the acetate was not active alone. 

TRADITIONAL MEDICINAL USES Afghanistan. Flowers are taken orally by females for contraception k Argentina. Decoction of the dried fruit is taken orally for diarrhea and to treat respiratory and urinary tract infections " . China. Decoction of the dried fruit is taken orally for diabetes . 

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