Natürliche Standorte von diploidem und tetraploidemHordeum bulbosum L.

Lein, Alfred

doi:10.1007/bf00708903

Cited by 13 publications

(8 citation statements)

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“…Measurements of pollen only confirmed the observations of Lein (1948), i.e. that the variation within the cytotypes makes a distinction between them impossible (Fig.…”

Section: Distinction Between the Diploid And Tetraploid Cytotypesmentioning

confidence: 58%

“…H . bulbosum is self-incompatible (Lein 1948, Lundqvist 1962. Thus emasculation was unnecessary, but it was carried out for mechanical reasons.…”

Section: Methodsmentioning

confidence: 99%

“…Cytologj H. bulbosum exists in a diploid, 2n = 2x = 14, as well as a tetraploid form, 2n = 4x = 28 (e.g. Berg 1936, Chin 1941, Lein 1948, Konzak et al 1951, Morrison 1959, Katznelson & Zohary 1967. Cultivated material from 99 populations was examined cytologically: 21 of the samples were diploid, 77 were tetraploid, and one was triploid (Figs 7 and 8).…”

Section: Hordeum Bulbosum Lmentioning

confidence: 99%

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Biosystematics of Hordeum bulbosum L.

Jørgensen

1982

Nordic Journal of Botany

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Hordeum bulbosum L. is found in a diploid (2n = 14) and a tetraploid form (2n = 28). Of the 99 collections examined cytologically, 21 were diploid, 77 tetraploid and one triploid. The diploids were found in the western Mediterranean area to West Greece, tetraploids from West Greece eastwards to Afghanistan. Analysis of herbarium material and extensive cultivated material showed that the two cytotypes could not be distinguished morphologically. Intracytotype crosses were successful in the different provenance combinations, except in a few cases, where individual parental genotypes caused a low crossability. Intercytotype hybrids were rather difficult to obtain. In the light of the results a taxonomic subdivision of the species is not recommended. A problem in connection with the Linnaean type specimen is discussed.

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“…Measurements of pollen only confirmed the observations of Lein (1948), i.e. that the variation within the cytotypes makes a distinction between them impossible (Fig.…”

Section: Distinction Between the Diploid And Tetraploid Cytotypesmentioning

confidence: 58%

“…H . bulbosum is self-incompatible (Lein 1948, Lundqvist 1962. Thus emasculation was unnecessary, but it was carried out for mechanical reasons.…”

Section: Methodsmentioning

confidence: 99%

Section: Hordeum Bulbosum Lmentioning

confidence: 99%

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Biosystematics of Hordeum bulbosum L.

Jørgensen

1982

Nordic Journal of Botany

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“…Diploid H. bulbosum is a wild, perennial, cross-fertilizing species found in some hilly parts of Morocco, Tunisia, Cyrenaica, Italy, and Spain (LEIN, 1948;KATZNEL-SON and ZOHARY, 1967) and vernalization is needed to induce flowering (KOLLER and HIGH KIN, 1960). It is self-sterile (LEIN, 1948 ;LUNDQVIST, 1962), but it is easy to propagate plants vegetatively from bulbils produced at the bases of stems.…”

Section: Hordeum Bulbosum Lmentioning

confidence: 99%

Haploids

Reinert¹,

Bajaj²,

Nitsch³

et al. 1977

Applied and Fundamental Aspects of Plant Cell, Tissue, and Organ Culture

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“…is a self-incompatible cross-pollinated species that exists as a diploid [2n = 2x = 14 (LEIN, 1948)] and as an autotetraploid cytotype (BERG, 1936) . The diploid form has been observed in Italy, Morocco, Tunisia and Cyrenaica and the two ploidy levels coexist in central Greece (LEIN, 1948 ;KATZNELSON & ZOH-ARY, 1967 ;JORGENSEN, 1982) . The natural populations of the diploid form appear to have strict ecological requirements showing a patchy, discontinuous distribution .…”

Section: Introductionmentioning

confidence: 99%

Morphological variation in diploid Hordeum bulbosum L. collected in Spain

1984

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Diploid Hordeum bulbosum L . (2n = 2x = 14), collected for the first time in south-west Spain, is described . One hundred and ten plants from the original seed were grown to maturity to determine the type and extent of phenotypic variation within the population . Cytological study verified that all the plants were diploids. The plants proved to be variable for traits such as growth type, tiller number, culm and spike length, flag leaf length and width and bulb characteristic and size . The variation in the diploids was found to be greater than previously reported . The plants found in elevations 150-250 m do show differently to other groups with respect to several morphological characters .

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Natürliche Standorte von diploidem und tetraploidemHordeum bulbosum L.

Cited by 13 publications

References 2 publications

Biosystematics of Hordeum bulbosum L.

Biosystematics of Hordeum bulbosum L.

Haploids

Morphological variation in diploid Hordeum bulbosum L. collected in Spain

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