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首页> 外文期刊>Genetic Resources and Crop Evolution >Expansion of female sex organs in response to prolonged virginity in Cannabis sativa (marijuana)
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Expansion of female sex organs in response to prolonged virginity in Cannabis sativa (marijuana)

机译：响应长期处女的大麻中女性性器官的扩张（大麻）

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摘要

Female flowers of Cannabis sativa in wild-growing populations and in hemp plantations are almost always well supplied with pollen. The style-stigma portion of the pistils of such plants was found to average only about 3 mm in length and to invariably be two-branched. By contrast, "buds" (congested female inflorescences), the standard form of marijuana now produced in the illicit and medicinal marijuana sectors, are protected against pollen. This report documents that in the absence of pollen, the style-stigma parts of virgin pistils expand notably, average over 8 mm in length, and tend to develop more than two branches and to increase in girth. From an evolutionary viewpoint, this expansion of pollen-receptive tissue is an apparent adaptation for increasing the probability of fertilizing the females when males are extremely scarce. From a practical viewpoint, the expanded presence of stigma tissues may be both advantageous and disadvantageous. The high-THC secretory gland heads of Cannabis tend to fall away from marijuana buds, significantly decreasing pharmacological potency, but many gland heads become stuck to the receptive papillae of the stigmas, reducing the loss. Although stigmas constitute a small proportion of marijuana, their distinctive chemistry could have health effects.
机译：在野生种群和大麻种植园中，大麻的雌花几乎总是提供花粉。发现这些植物的雌蕊的花柱头部分的平均长度仅为约3mm，并且总是两分支的。相比之下，目前在非法和药用大麻部门生产的大麻的标准形式“花蕾”（拥挤的雌性花序）都受到了花粉的保护。该报告证明，在没有花粉的情况下，初生雌蕊的花柱头部分明显扩张，平均长度超过8毫米，并倾向于形成两个以上的分支并增加周长。从进化的观点来看，花粉受体组织的这种扩展是明显增加的适应性，当雄性极为缺乏时，这种增加可以增加雌性受精的可能性。从实践的角度来看，柱头组织的扩大存在既有利又不利。大麻的高THC分泌腺体倾向于从大麻芽中脱落，从而大大降低药理效力，但许多腺体变得粘在柱头的可接受乳头上，从而减少了损失。尽管柱头仅占大麻的一小部分，但其独特的化学性质可能对健康产生影响。

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