Morphology and pollen fertility of native and non-native bluebells in Great Britain

IF 1.7 4区生物学 Q2 PLANT SCIENCES

Plant Ecology & Diversity Pub Date : 2020-07-03 DOI:10.1080/17550874.2020.1765037

M. Ruhsam, D. Kohn, J. Squirrell, Harald Schneider, J. Vogel, F. Rumsey, P. Hollingsworth

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引用次数: 2

Abstract

ABSTRACT Background There is considerable concern that the native British bluebell Hyacinthoides non-scripta (Asparagaceae) is at risk due to hybridisation with naturalised British non-native bluebells. However, the taxonomic identity of British non-natives is uncertain, and they are either referred to as Spanish bluebells, H. hispanica, or as hybrids between H. non-scripta and H. hispanica. Aims To establish whether a detailed morphological analysis can shed light on the taxonomic identity of non-native British bluebells. Methods We measured 28 morphological characters and recorded the pollen fertility of native and non-native bluebells in Britain and compared these with H. hispanica populations from Portugal. Results British non-native bluebells appeared morphologically close to H. hispanica but occupied a separate phenotypic space. All three taxa showed high morphological variability with overlapping ranges, however, at least 92.8% of trait means were significantly different between any pair-wise taxon comparison. Sixty per cent of continuous traits were significantly larger in British non-native bluebells compared to H. non-scripta and H. hispanica. In contrast, pollen fertility was significantly lower in British non-natives (79%) compared to H. non-scripta (94%) and H. hispanica (84%). Conclusions These results are consistent with, however, do not provide conclusive evidence for, the possible hybrid status of British non-native bluebells.

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英国本地和非本地风铃草的形态和花粉肥力

摘要背景人们非常担心，英国本土风铃草Hyacinthoides non-scripta（芦笋科）因与英国本土风信子杂交而面临风险。然而，英国非本地人的分类身份尚不确定，它们要么被称为西班牙风铃草，H.hispania，要么被称是H.non-scripta和H.hispanica的杂交种。目的确定详细的形态学分析是否可以揭示非本土英国风铃草的分类特征。方法我们测量了英国本土和非本土风铃草的28个形态特征，并记录了它们的花粉育性，并将其与葡萄牙的H.hispanica种群进行了比较。结果英国非本土风铃草在形态上与灰穗风铃草接近，但占据单独的表型空间。所有三个分类群都表现出高度的形态变异性和重叠范围，然而，在任何成对的分类群比较中，至少92.8%的特征均值存在显著差异。与H.non-scripta和H.hispanica相比，英国非本土风铃草60%的连续性状显著更大。相比之下，英国非本地人（79%）的花粉育性显著低于非scripta H.（94%）和hispanica H.（84%）。结论这些结果与英国非本土风铃草可能的杂交状态一致，但没有提供确凿的证据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plant Ecology & Diversity PLANT SCIENCES-

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Plant Ecology and Diversity is an international journal for communicating results and novel ideas in plant science, in print and on-line, six times a year. All areas of plant biology relating to ecology, evolution and diversity are of interest, including those which explicitly deal with today''s highly topical themes, such as biodiversity, conservation and global change. We consider submissions that address fundamental questions which are pertinent to contemporary plant science. Articles concerning extreme environments world-wide are particularly welcome. Plant Ecology and Diversity considers for publication original research articles, short communications, reviews, and scientific correspondence that explore thought-provoking ideas. To aid redressing ‘publication bias’ the journal is unique in reporting, in the form of short communications, ‘negative results’ and ‘repeat experiments’ that test ecological theories experimentally, in theoretically flawless and methodologically sound papers. Research reviews and method papers, are also encouraged. Plant Ecology & Diversity publishes high-quality and topical research that demonstrates solid scholarship. As such, the journal does not publish purely descriptive papers. Submissions are required to focus on research topics that are broad in their scope and thus provide new insights and contribute to theory. The original research should address clear hypotheses that test theory or questions and offer new insights on topics of interest to an international readership.