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首页> 外文期刊>Ecological research >Floral Traits Variation, Legitimate Pollination, And Nectar Robbing In Polygala Vayredae (polygalaceae)
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Floral Traits Variation, Legitimate Pollination, And Nectar Robbing In Polygala Vayredae (polygalaceae)

机译：远志（polygalaceae）的花性状变异，合法授粉和花蜜抢劫

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摘要

The variation of floral morphology and its effect on the flower visitors of Polygala vayredae Costa (Polygalaceae), a narrow endemic species from the Oriental pre-Pyrenees, were examined. First, to account for the main floral reward (i.e., nectar), the relationship between the dimensions of the nectar gland and nectar production was investigated. Second, floral traits variation was assessed within and between the three most representative populations of the species. Finally, the role of several floral traits in the female fitness was evaluated. Furthermore, as nectar robbing was highly frequent, preferences of robbers for specific floral traits and their impact on legitimate pollinations were also evaluated. The flowers of this species are characterized by significant variations in floral characteristics and nectar rewards. A significant and positive correlation between the nectar gland dimensions and nectar production per flower was observed, with the gland dimensions being a good measure to infer the rewards offered by the flowers of P. vayredae. In general, corolla traits were significant and positively correlated with each other. Nectar was revealed to be an important trait in flower-visitor interactions, with legitimate pollinations being primarily influenced by this floral reward. Negative correlations between robbing frequency and legitimate pollinations were observed in two of the studied populations, and positive correlations between flower size and robbing frequency were observed in one population. An indirect negative selection over phenotypic floral traits mediated by nectar robbers is proposed.
机译：考察了花形形态的变化及其对远东比利牛斯山的特有种远志科植物远志的花访客的影响。首先，为了说明主要的花奖励（即花蜜），研究了花蜜腺的尺寸与花蜜产量之间的关系。其次，在该物种的三个最具代表性的种群内部和之间评估了花卉性状的变异。最后，评估了几种花卉性状在女性健身中的作用。此外，由于花蜜抢劫非常频繁，因此还评估了抢劫者对特定花卉特征的偏爱及其对合法授粉的影响。该物种的花朵的特征在于花朵特征和花蜜奖励的显着变化。观察到花蜜腺的大小与每朵花的蜜汁产量之间存在显着的正相关关系，而腺的大小是推断P. vayredae花朵提供的奖励的好方法。通常，花冠性状是显着的并且彼此正相关。花蜜被发现是花与花之间相互作用的重要特征，合法授粉主要受花香的影响。在两个研究种群中，抢劫频率与合法授粉之间呈负相关，而在一个种群中，花朵大小与抢劫频率之间呈正相关。提出了对花蜜强盗介导的表型花性状的间接负选择。

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