e-journal

Morphological versus molecular markers to describe variability in Juniperus excelsa subsp. excelsa (Cupressaceae)

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Abstract.
Background and aims.
Juniperus excelsa M.-Bieb. is a major forest element in the mountains of the eastern part of
Mediterranean and sub-Mediterranean regions. This study comprises the first morphological investigation
covering a large part of the geographical range of J. excelsa and aims to verify the
congruency between the morphological results and molecular results of a previous study.

Methodology:
We studied 14 populations sampled from Greece, Cyprus, Ukraine, Turkey and Lebanon, 11 of
which have previously been investigated using molecular markers. Three hundred and ninetyfour
individuals of J. excelsa were examined using nine biometric features characterizing
cones, seeds and shoots, and eight derived ratios. Statistical analyses were conducted in
order to evaluate the intra- and inter-population morphological variability.

Principal results:
The level of intra-population variability observed did not show any geographical trends. The
total variation mostly depended on the ratios of cone diameter/seed width and seed
width/seed length. The discrimination analysis, the Ward agglomeration method and
barrier analysis results showed a separation of the sampled populations into three main clusters.
These results confirmed, in part, the geographical differentiation revealed by molecular
markers with a lower level of differentiation and a less clear geographical pattern. The most
differentiated populations using both markers corresponded to old, isolated populations in
the high altitudes of Lebanon (>2000 m). Moreover, a separation of the northern Turkish
population from the southern Turkish populations was observed using both markers.

Conclusions:
Morphological variation together with genetic and biogeographic studiesmake an effective tool for
detecting relict plant populations and also populations subjected to more intensive selection.

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Ketersediaan

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Informasi Detail

Judul Seri

AoB PLANTS

No. Panggil

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Penerbit

Oxford : Oxford University Press., 2012

Deskripsi Fisik

AoB PLANTS 2012: pls013; doi:10.1093/aobpla/pls013

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2012: pls013

Subjek

FISIOLOGI TANAMAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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