New evidence for bee-pollination systems in Aloe (Asphodelaceae: Aloideae), a predominantly bird-pollinated genus. (Special Issue: Advances in the pollination biology of South African plants.)

Botes C.; Wragg P. D.; Johnson S. D.

首页> 外文期刊>South African Journal of Botany >New evidence for bee-pollination systems in Aloe (Asphodelaceae: Aloideae), a predominantly bird-pollinated genus. (Special Issue: Advances in the pollination biology of South African plants.)

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New evidence for bee-pollination systems in Aloe (Asphodelaceae: Aloideae), a predominantly bird-pollinated genus. (Special Issue: Advances in the pollination biology of South African plants.)

机译：芦荟（ipho芦荟：Aloideae）（主要是鸟类授粉属）中蜜蜂授粉系统的新证据。（特刊：南非植物授粉生物学的进展。）

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Most Aloe species have long-tubed orange-red flowers, and many of these have been shown to be pollinated by birds. A few Aloe species have relatively short-tubed whitish or cream flowers, and one of these species, Aloe inconspicua, has been shown to be pollinated by insects. Here we further document exclusive insect-pollination in Aloe minima and A. linearifolia, two short-tubed summer flowering aloes in the grasslands of KwaZulu-Natal, South Africa. Despite sunbirds being present in the study area, only bee species were observed to visit and pollinate these two aloes. There was little difference in seed set between bird-excluded and open-pollinated treatments, indicating that bee visitors are effective as pollinators of these two species. In a few cases, a single visit by a bee was enough for successful fertilization. Other floral traits, including UV reflectance, small quantities of concentrated nectar, and the presence of floral scent (associated with pollination by insects), strengthen the argument for evolutionary specialization for exclusive insect-pollination in certain species of Aloe.

机译：大多数芦荟物种具有长管状橙红色花，并且其中许多已经显示为鸟类授粉。少数芦荟品种具有较短的短管白色或奶油色花，其中之一 inloespicua 已被昆虫授粉。在这里，我们进一步记录了最小芦荟和 A的昆虫授粉。 linearifolia ，南非夸祖鲁-纳塔尔省草原上的两个短管夏季开花芦荟。尽管研究区中存在太阳鸟，但仅观察到蜜蜂物种访问和授粉了这两种芦荟。鸟类排除和开放授粉处理之间的结实差异不大，表明蜜蜂来访者可有效作为这两种物种的传粉媒介。在少数情况下，蜜蜂一次造访就足以成功施肥。其他花卉特征，包括紫外线反射率，少量浓缩花蜜和存在的花香气味（与昆虫的授粉有关），增强了对某些芦荟（i。芦荟）专为昆虫授粉进行进化专化的论点>。

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《South African Journal of Botany》 |2009年第4期|共7页
作者
Botes C.; Wragg P. D.; Johnson S. D.;
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正文语种 eng
中图分类植物学;
关键词
nectar; pollination; pollinators; reflectance; seed set; ultraviolet radiation; Aloe; Apidae; Kwazulu-Natal; South Africa;

机译：花蜜;授粉;授粉;反射率;种子集;紫外线;芦荟;蚜虫;夸祖鲁-纳塔尔省;南非;

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7. New evidence for bee-pollination systems in Aloe (Asphodelaceae: Aloideae), a predominantly bird-pollinated genus [O] . Botes C., Wragg P.D., Johnson S.D. 2009

机译：芦荟（主要是鸟类授粉属）的蜜蜂授粉系统的新证据

New evidence for bee-pollination systems in Aloe (Asphodelaceae: Aloideae), a predominantly bird-pollinated genus. (Special Issue: Advances in the pollination biology of South African plants.)

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