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  • Angiosperms
  • Springer  (11)
  • National Academy of Sciences
  • Periodicals Archive Online (PAO)
  • 1995-1999
  • 1985-1989
  • 1980-1984  (11)
  • 1955-1959
  • 1940-1944
  • 1982  (11)
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Verlag/Herausgeber
  • Springer  (11)
  • National Academy of Sciences
  • Periodicals Archive Online (PAO)
Erscheinungszeitraum
  • 1995-1999
  • 1985-1989
  • 1980-1984  (11)
  • 1955-1959
  • 1940-1944
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    A comparative study of genomes in angiosperms (1982)
    Springer
    Plant systematics and evolution 139 (1982), S. 209-227 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Dicotyledons ; Monocotyledons ; DNA reassociation kinetics ; fast repeats ; repetitive DNA ; single copy DNA ; short period interspersion pattern ; slow repeats ; genome evolution
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Angiosperms investigated by DNA/DNA reassociation studies were classified and tested for a taxonomic class- and subclass-specifity in a biometrical fashion. Monocotyledons and Dicotyledons differ significantly from each other with respect to a genomic parameter (U/R-ratio;U single copy DNA fraction;R = 1-U fraction of repetitive DNA). This difference is discussed from an evolutionary and molecular point of view.—Intercorrelations between the fraction of fast repeats, slow repeats, and single copy DNA can be detected. The amount of DNA organized in a short period pattern of interspersion is found to depend on the fraction of repetitive and single copy DNA. The number of DNA segments tandemly arranged in a short period pattern is linearly correlated withR/U-values. This correlation allows for a formula suitable for the estimation of the number of active genes in angiosperms. The analytical complexities of repetitive and single copy DNA are linearly correlated with the genome size of higher plants. The ratioU/R depends on the genome size of angiosperms in a hyperbolic fashion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00989326
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  • 2
    Digitale Medien
    Digitale Medien
    Heterochromatin and chromosome variation in cultivated species ofTulipa subg.Leiostemones (Liliaceae) (1982)
    Springer
    Plant systematics and evolution 139 (1982), S. 163-178 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Liliaceae ; Tulipa subg.Leiostemones ; Giemsa banding ; heterochromatin ; karyosystematics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The chromosomes of several cultivatedTulipa species of subg.Leiostemones were examined in conventionally stained and C-banded preparations. The heterochromatin content varied from almost none to 45%. Several chromosome types were recognized with respect to chromosome morphology and heterochromatin distribution, and groups of species with common chromosome characteristics could be identified. These karyological relationships are discussed with respect to the groups formed on the basis of floral and bulb charateristics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00989323
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  • 3
    Digitale Medien
    Digitale Medien
    Serologische Untersuchungen zur Gliederung derBrassicaceae (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 39-55 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Brassicaceae (Cruciferae) ; Alysseae ; Arabideae ; Brassiceae ; Heliophileae ; Hesperideae ; Lepidieae ; Pringleeae ; Sisymbrieae.—Serological systematics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The serological investigations support the opinion ofJanchen (1942) to combine the generaBunias, Isatis, andSisymbrium in the tribeSisymbrieae; Cheiranthus, Erysimum, andMatthiola in the tribeHesperideae; andBrassica, Crambe, Sinapis, andSuccowia in the tribeBrassiceae. They further underline the central position of theSisymbrieae and the isolated position of theHeliophileae. In accordance withEigner (1973) theBrassiceae are placed closer to theSisymbrieae than inJanchen; the same holds for thePringleeae. No serological justification could be found to uniteArabis andBarbarea in the tribeArabideae, andAlyssum andLunaria in theAlysseae. From the antigen-systems used among the representatives ofJanchen's Lepidieae the generaLepidium andNeslia show remarkable correspondence both toCamelina andThlaspi, but not toCochlearia which appears distant fromCamelina andThlaspi also.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02409896
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  • 4
    Digitale Medien
    Digitale Medien
    The possible polyphyletic origin of copper tolerance inAgrostis tenuis (Gramineae) (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 109-117 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Gramineae (Poaceae) ; Agrostis tenuis.—Evolution ; Copper tolerance ; genotype-environment interaction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The effect of increased copper concentration in solution on the rooting of seven copper tolerant populations ofAgrostis tenuis has been examined using the regression technique ofFinlay &Wilkinson (1963). Three types of response to increased copper concentration have been detected, and it is suggested that these reflect a different genetic control of copper tolerance in different populations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02407292
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  • 5
    Digitale Medien
    Digitale Medien
    Chemotaxonomical investigations of theSymphytum officinale polyploid complex andS. asperum (Boraginaceae): The pyrrolizidine alkaloids (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 279-292 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Boraginaceae ; Symphytum.—Pyrrolizidine alkaloids ; chemotaxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract By means of thin layer chromatography in conjunction with mass spectrometry the pyrrolizidine alkaloid patterns derived fromSymphytum asperum, several cytotypes ofS. officinale agg. and the artificial hybrids of the former taxa, were compared. The obtained patterns were not essentially affected by variation in cytotype, harvesting times and -location of plants. Lycopsamine, acetyl-lycopsamine and symphytine or their isomers were generally found in theS. officinale cytotypes, echimidine and symphytine inS. asperum. The interspecific hybrids contained all alkaloids mentioned. The definite lack of echimidine in the 2 n=40 cytotype proves that it is conspecific withS. officinale and does not belong to a hybrid-swarmS. asperum × S. officinale with 2 n=48.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02418897
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  • 6
    Digitale Medien
    Digitale Medien
    Zwei neue Hybriden in der GattungEuphrasia (Scrophulariaceae) (1982)
    Springer
    Plant systematics and evolution 139 (1982), S. 319-322 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Scrophulariaceae ; Euphrasia ; E. alpina ; E. ×dilata ; E. hirtella ; E. kerneri ; E. picta ; E. rostkoviana ; E. tricuspidata ; E. ×trikoviana ; E. ×vestinensis ; hybrids ; chromosome numbers ; Flora of Italy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The following new hybrids are described:Euphrasia ×dilata = E. hirtella Jordan exReuter ×alpina Lam.;Euphrasia ×trikoviana = E. tricuspidata L. ×rostkoviana Hayne. The chromosome number ofEuphrasia tricuspidata L. has been established for the first time: 2n = 22.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00989335
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  • 7
    Digitale Medien
    Digitale Medien
    DNA sequence organization and RNA complexity inMatthiola incana (Brassicaceae) (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 75-86 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Brassicaceae ; Matthiola incana.—DNA interspersion pattern ; Messenger RNA ; RNA complexity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The DNA of the cruciferMatthiola incana (Brassicaceae, Capparales) has been investigated for the pattern of sequence interspersion and RNA transcription. A short period pattern of interspersion (Xenopus-like interspersion pattern) is predominant (60%). Similar to a series of other Angiosperms (tobacco, soybean, parsley and some cereals) repetitive clusters orinter-se interspersion patterns of repetitive DNA occur inMatthiola genome and amount to 12%. From the hybridization of single copy DNA with poly(A)−-RNA and from cDNA/poly(A)+-RNA and cDNA/poly(A)−-RNA hybridizations a number of about 9,400 active genes can be estimated forM. incana seedlings. Both RNA constituents (poly(A)+-RNA and poly(A)−-RNA) contain mainly the same protein-coding mRNA sequences. Total mRNA is amounting to about 4% of theM. incana RNA population. A total of 1.2% (or about 30% of mRNA) of theM. incana RNA is represented by polyadenylated mRNA sequences. About 3.6% of single copy DNA hybridizes with poly(A)−-RNA. Approximately 7% of theM. incana genome, organized in a short period pattern of DNA sequence interspersion, is transcribed into RNA sequences (mRNA). About 6% of clustered repetitive DNA is expressed into RNA sequences such as rRNA and tRNA. Approximately 1.6 × 106 rRNA, 1.75 × 107 tRNA and 3.7 × 105 mRNA molecules are present perMatthiola seedling cell. The transcription rate of single rRNA and tRNA genes can be estimated to be about 1,400 or 1,100 copies per gene, respectively.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02409898
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  • 8
    Digitale Medien
    Digitale Medien
    Alcohol dehydrogenase isozymes inGossypium hirsutum and its putative diploid progenitors: The biochemical consequences of enzyme multiplicity (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 141-149 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Malvaceae ; Gossypium hirsutum ; G. ramondii ; G. herbaceum ; G. arboreum.—Allopolyploidy ; alcohol dehydrogenase ; developmental homeostasis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Electrophoretic variation in alcohol dehydrogenase (ADH) was examined in tetraploidGossypium hirsutum and its putative diploid progenitorsG. ramondii, G. herbaceum, and a close relative,G. arboreum. All the diploids had three isozymes, while strains of the tetraploidG. hirsutum had either 4 or 6. Each isozyme was eluted from starch gels and significant differences in activity were noted between several of the isozymes relative to pH, substrate, temperature and salinity. This suggests that an increase in enzyme heterozygosity can result in higher levels of developmental homeostasis, but it depends on the isozyme alleles involved.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02407294
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  • 9
    Digitale Medien
    Digitale Medien
    Karyotype variation inAllium commutatum (Liliaceae s. lato) (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 179-189 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Liliaceae s. 1. ; Alliaceae ; Allium ampeloprasum agg. ; A. commutatum ; A. bourgeaui, A. porrum.—Karyosystematics ; Karyotype differentiation ; chromosome polymorphism ; B-chromosomes ; polyploidy —Flora of the Mediterranean. Aegaean
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Chromosome numbers (2×, 3×, 4×), B-chromosomes, and variation among marker chromosomes inAllium commutatum Guss. was studied. These different chromosomal types exhibit distinct distribution patterns and a centre of variation has been located in the central Aegean area. A common origin ofA. commutatum, the Aegean endemicA. bourgeaui Rech. fil.,A. ampeloprasum L. and the cultivatedA. porrum L. is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02407296
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  • 10
    Digitale Medien
    Digitale Medien
    The systematics ofLinum sect.Linopsis (Linaceae) (1982)
    Springer
    Plant systematics and evolution 140 (1982), S. 225-234 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Linaceae ; Linum sect.Linopsis—Evolution ; classification ; chromosome numbers ; heterostyly ; pollen morphology
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract SectionLinopsis of the genusLinum is the largest and probably the most widespread of the five commonly recognized sections. Using a number of traits, but especially heterostyly, style union, development of false septa in the fruit, pollen morphology, and chromosome number, together with petal pigmentation, number of floral parts, and stigma shape, the section is divided into five subsections:Dichrolinum, with one series;Halolinum with one;Linopsis, with four;Keniense, with one; andRigida, with two. Of these, subsect.Keniense and two series are new, the remaining four subsections and four series are published in a new rank. The inferred relationships of all of the groups and the general distribution of each are discussed. The section ranges from southern Europe and the Mediterranean region to India, eastern and southern Africa and throughout much of North and South America. The primitive species of the section are believed to be in the Mediterranean region.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02407299
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  • 11
    Digitale Medien
    Digitale Medien
    Bestimmung des Schleimgehaltes myxospermer Diasporen verschiedener Angiospermenfamilien (1982)
    Springer
    Plant systematics and evolution 141 (1982), S. 7-21 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Acanthaceae ; Asteraceae ; Cistaceae ; Brassicaceae ; Cucurbitaceae ; Euphorbiaceae ; Juncaceae ; Lamiaceae ; Linaceae ; Lythraceae ; Nyctaginaceae ; Plantaginaceae ; Poaceae ; Podostemaceae ; Polemoniaceae ; Scrophulariaceae ; Solanaceae ; Urticaceae ; Zygophyllaceae ; Mucilage content of myxospermatic diaspores ; extraction procedures ; swelling factors ; substructures of mucilages
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The mucilage content of structurally differing myxospermatic diaspores from 49 species belonging to 19 families ofAngiospermae has been determined by applying various extraction procedures. The results demonstrate no obvious relationship between the size, mucilage quantity, and the swelling factor of the diaspores studied. Furthermore, mucilage producing structures and structural peculiarities of the mucilages themselves are elaborated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01006475
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