Chromosome numbers and geographical distribution of Ulex europaeus subsp. europaeus (Leguminosae)

Prieto, J. A. Fernandez; Vera, M. L.; Martinez, M. J. Alvarez; Díaz, Tomás E.; Casado, M. A. Fernandez; Fernandez-Carvajal, M. C.; Villarías, Maria Isabel Gutiérrez; Nava, H. S.

doi:10.1111/j.1095-8339.1993.tb00327.x

Botanical Journal of the Linnean Society

1993

DOI: 10.1111/j.1095-8339.1993.tb00327.x

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Chromosome numbers and geographical distribution of Ulex europaeus subsp. europaeus (Leguminosae)

J. A. Fernandez Prieto

M. L. Vera

M. J. Alvarez Martinez

et al.

Abstract: FERNANDEZ PRIETO, J. A., VERA, M. L., ALVAREZ MARTINEZ, M. J., DIAZ, T. E., FERNANDEZ CASADO, M. A., FERNANDEZ‐CARVAJAL, M. C, GUTIERREZ VILLARIAS, M. I. & NAVA, H. S., 1993. Chromosome numbers and geographical distribution of Ulex europaeus subsp. europaeus (Leguminosae). Chromosome numbers are reported in Ulex europaeus subsp. europaeus (99 samples from northern Spain, France and Great Britain). Three levels of ploidy (diploid, tetraploid and hexaploid) have been detected; the diploid and tetraploid levels, … Show more

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Cited by 4 publications

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“…If that were the case, and assuming that the range of variation of the bracteole width and shape shows an eastward clinal (geographical) variation, the independence of the subspecies in north-west Spain and their merit for taxonomical recognition should be reconsidered. However, very recently Misset & Gourret (1996) have extensively studied samples from Brittany (France) and strongly disagree with the results presented by Fernandez Prieto et al (1993). n /zOX 0 5mm BRAC.…”

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Correlations between chromosomal and morphological characters in subspecies of Ulex europaeus L. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Cubas¹,

Pardo²

1997

Botanical Journal of the Linnean Society

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The two subspecies of Ulex mn$mus L. (subsp. eumpms and subsp. latebracteatus) are easily differentiated by the shape and size of their bracteoles, and by their chromosome number. However, in the north-west of the Iberian Peninsula, the areas of both subspecies are not clearly delimited, the shape of the bracteoles is intermediate and the width is close to the diagnostic limit. Thus, allocation of some specimens to either subspecies is diffcult. Recently, a controversy has arisen concerning the intrapopulational uniformity of the chromosome number in U. mmpaezu from west France and north Spain, and the usefulness of ploidy level and chromosome number as clear-cut indicators of the two subspecies. Thus, the merits of recognizing the subspecies as independent are re-analysed here. Our results for north-west Spain show that the chromosome number is uniform and itable within populations and is clearly related to the morphological characters. Correlation and discriminant analyses show that bracteoles and stomata sizes are highly correlated and are good predictors of ploidy level. Furthermore, the results support the maintenance of two subspecies in U. wmpam, which can be delimited by a combination of morphological characters, chromosome number and geographical distribution. 0 1997 The Linnean Society of London

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“…latebracteatus is tetraploid with 2n = 64 chromosomes (Castro, 1945;Castroviejo & Bermejo, 1983;Cubas, 1984Cubas, , 1987Misset, 1990). However, Fernandez Prieto et al (1993) indicate three levels of ploidy (2x, 4x and 6x with 2n = 32,64 and 96 chromosomes respectively) in specimens of U. europaeus L. subsp. europaeus from west France and north Spain.…”

mentioning

confidence: 99%

Correlations between chromosomal and morphological characters in subspecies of Ulex europaeus L. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Cubas¹,

Pardo²

1997

Botanical Journal of the Linnean Society

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Correlations between chromosomal and morphological characters in subspecies ofUlex europaeusL. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Cubas

Pardo

1997

Botanical Journal of the Linnean Society

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Flow Cytometric Analysis of the Different Ploidy Levels Observed in the Genus Ulex L. Faboideae‐Genisteae in Brittany (France)

Misset

Gourret

1996

Botanica Acta

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A controversy arose in the last decade concerning the identity of U.gal/;; and the ploidy of gorses in Brittany. To determine, for a wide number of samples, the ploidy levels of indigenous or recently introduced gorses in Brittany, we used the flow cytometric method on DAPI fluorescent nuclear suspensions, together with size measurements of stomata and dry pollen grains. All plants belonged to the section Neowillkommia of the genus Ulex. They were found to form a polyploid series with 2x, 4x and 6x levels. All U. minor were diploid. All U. europaeus ssp. europaeus and all U. gal/ii, except a single specimen out of 65, were hexaploid. This specimen had cell dimensions very close to that of U.europaeus ssp. latebracteatus which is a tetraploid. Tissuespecific augmentation was found in Rhizobium-containing cells of root nodules and within the endosperm of immature seeds. The 2C DNA content of U.europaeus ssp. europaeus was estimated at 90 %that of Pisum sativum, so weighing about 7.7 pg /2C. Neither U.gal/ii nor U.europaeus ssp. europaeus showed any difference in their ploidy level between erect and prostrate ecotypes. The taxonomic and nomenclatural consequences are discussed.

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Chromosome numbers and geographical distribution of Ulex europaeus subsp. europaeus (Leguminosae)

Cited by 4 publications

References 2 publications

Correlations between chromosomal and morphological characters in subspecies of Ulex europaeus L. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Correlations between chromosomal and morphological characters in subspecies of Ulex europaeus L. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Correlations between chromosomal and morphological characters in subspecies ofUlex europaeusL. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Flow Cytometric Analysis of the Different Ploidy Levels Observed in the Genus Ulex L. Faboideae‐Genisteae in Brittany (France)

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