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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Reproductive assurance through unusual autogamy in the absence of pollinators in Passiflora edulis (passion fruit)
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Reproductive assurance through unusual autogamy in the absence of pollinators in Passiflora edulis (passion fruit)

机译：在无花授粉的西番莲中通过不寻常的同卵繁殖来确保繁殖

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摘要

siflora edulis (passion fruit), a native of Brazil, is widely grown in frost-free areas around the world. In its native habitat and many other areas, the species is self-incompatible and carpenter bees are the effective pollinators. In India, it is cultivated in North East and southern states. In two of the populations of P. edulis Y.flavicarpa (yellow passion fruit) in Karnataka, there was good fruit set, although there were no effective pollinators. Studies were carried out on reproductive ecologyof yellow passion fruit to understand the mode of fruit set in the absence of pollinators and the breeding system. Although several floral visitors, Apis cer-ana, Trigona sp. and an ant (Camponotus sp.) visited the flowers, they were all nectar robbers and not the pollinators. There is a unique autonomous self-pollination, involving the movement of anthers and stigmas, during flower opening which provides reproductive assurance to the species even in the absence of pollinators. The populations used in the present study are self-compatible. Thus, the species is able to produce constant fruit set even when the population size is small and pollinators are absent; evolution of these features seems to be the main factor for its wide distribution around theworld.
机译：百香果（siflora edulis）是巴西人，在世界无霜地区广泛种植。在其本土栖息地和许多其他地区，该物种是自交不亲和的，木蜂是有效的传粉媒介。在印度，它在东北和南部各州栽培。在卡纳塔克邦的两个食用假单胞菌Y.flavicarpa（黄色百香果）种群中，虽然没有有效的传粉媒介，但其坐果良好。对黄色百香果的生殖生态进行了研究，以了解在没有传粉媒介和育种系统的情况下坐果的模式。虽然有几个花卉访客，Apis cer-ana，Trigona sp。一只蚂蚁（Camponotus sp。）参观了花朵，它们都是花蜜强盗，而不是传粉者。开花过程中存在独特的自主自花授粉，涉及花药和柱头的移动，即使没有授粉媒介也能为该物种提供繁殖保证。本研究中使用的种群是自相容的。因此，即使种群很小且没有传粉媒介，该物种也能够产生恒定的坐果。这些功能的演进似乎是其在全球范围内广泛分布的主要因素。

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