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  • SPACE SCIENCES
  • Solanaceae
  • 1975-1979  (7)
  • 1
    Digitale Medien
    Digitale Medien
    Hybridisation experiments with protoplasts from chlorophyll-deficient mutants of some Solanaceous species (1977)
    Springer
    Planta 137 (1977), S. 253-257 
    Details
    ISSN: 1432-2048
    Schlagwort(e): Fusion ; Protoplast ; Solanaceae ; Somatic hybrid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Following fusion between protoplasts from two different chlorophyll-deficient diploid mutants of Datura innoxia Mill. it was possible to select 33 green hybrid calli on agar culture medium. Half of the somatic hybrids gave rise to leaves and some to shoots. The chromosome number of 20 somatic hybrids was determined: five were tetraploid, eight hexaploid, three octoploid, and four showed an aneuploid chromosome number. After transfer of the shoots of the five tetraploid hybrids to soil they developed roots. In control experiments in which protoplasts of the two mutants were cultured either as a mixture without being treated with the fusion agent, or cultured separately, no green callus could be obtained. Similar experiments involving protoplasts from one chlorophyll-deficient mutant of Datura innoxia, on the one hand, and those from similar mutants of Nicotiana sylvestris Spegazz. et Comes and Petunia hybrida, on the other, yielded no green somatic hybrid although hybrid protoplasts could be detected.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00388159
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Serological relationships of Fraction I proteins from species in the genusNicotiana (1977)
    Springer
    Plant systematics and evolution 128 (1977), S. 53-69 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Solanaceae ; Nicotiana ; Fraction I protein ; serotaxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The serological relationships of Fraction I proteins from 62 species of the genusNicotiana have been determined by qualitative double diffusion in agar gels, using antisera raised against crystalline Fraction I proteins from four species,N. glauca, N. glutinosa, N. gossei, andN. tabacum. The relationships obtained are, in most cases, similar to the relationships of the species based on morphological and cytogenetic criteria. In general, Fraction I proteins from species within the same section are serologically identical. However, serological examination of Fraction I proteins draws attention to certain species, for example,N. glauca, N. sylvestris, andN. acaulis, whose classification by traditional methods has been difficult.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00985171
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Serological reactions of Fraction I proteins from interspecific hybrids in the genusNicotiana (1978)
    Springer
    Plant systematics and evolution 129 (1978), S. 177-183 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Solanaceae ; Nicotiana ; Fraction I protein ; interspecific hybrids ; allopolyploids ; serotaxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The serological reactions of Fraction I proteins from interspecific hybrids in the genusNicotiana have been examined by immunodiffusion in agar gels using antisera to crystalline Fraction I proteins fromN. glutinosa, N. gossei, andN. tabacum. The serological reactions of the proteins from the hybrids resembled the reactions of the proteins from the maternal parent species but not from the paternal species. Changes in ploidy level did not affect the serological reactions of Fraction I proteins from hybrids. It is suggested that serological examination of Fraction I proteins from polyploid species and their known progenitors can indicate the direction of the cross giving rise to the polyploid species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00990759
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Genetic variation inLycopersicon pimpinellifolium: Evidence of evolutionary change in mating systems (1977)
    Springer
    Plant systematics and evolution 127 (1977), S. 139-170 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Lycopersicon pimpinellifolium ; Solanaceae ; Allozymes ; clinal variation ; electrophoresis ; evolution of mating systems ; heterozygote advantage ; isozymes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract L. pimpinellifolium is a highly heterogeneous species, exhibiting pronounced trends from one end of its linear distribution to the other in nearly every studied genetic locus. Drastic differences between populations were also detected in genetic variability and rates of outcrossing. Highly significant positive correlations exist in every possible comparison between flower size, degree of stigma exsertion, heterozygosity, and allelic polymorphism. The hypothesis most compatible with observations proposes that the very uniform, highly self-pollinated biotypes originated from the more primitive, more variable, facultatively allogamous forms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984147
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Evolution of mating systems inLycopersicon hirsutum as deduced from genetic variation in electrophoretic and morphological characters (1979)
    Springer
    Plant systematics and evolution 132 (1979), S. 279-298 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Lycopersicon hirsutum ; Solanaceae ; Allozymes ; clinal variation ; electrophoresis ; evolution of mating systems ; isozymes ; self-incompatibility
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Populations in the central part of the distribution are mostly self-incompatible and tend to be highly variable for allozymic and morphological characters; those in the north and south limits are entirely self-compatible and tend to be genetically highly uniform. Gradations in variability are observed in the intermediate regions. Flower size tends to diminish in the peripheral areas. The extensive differences in genotype observed between the north and south marginal populations are not compatible with the concept of a single origin of self-compatibility, but suggest, along with other evidence, that the substitution of different alleles resulted from differentiation in the marginal areas from older, self-incompatible stocks of the central region. The conclusions regarding patterns of genetic variation and nature of evolution of mating systems inL. hirsutum conform to a remarkable extent with those reached previously forL. pimpinellifolium, a species that is distinct in morphology and ecological preferences yet has a similar latitudinal distribution.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00982390
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Acrylamide gel electrophoresis of seed proteins from someSolanum (sectionSolanum) species (1977)
    Springer
    Plant systematics and evolution 127 (1977), S. 277-291 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Solanaceae ; Solanum ; Chemosystematics ; seed protein electrophoresis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Polyacrylamide gel electrophoresis was used to investigate the seed proteins of 36 accessions belonging toSolanum sect.Solanum (Solanaceae). These accessions represented 20 species, of four differing ploidy levels, and included infraspecific morphological variants. The resultant band patterns tended to reflect the morphological differences and genetical isolation displayed by many of the species. The most variable band patterns were encountered in the taxa with the greatest infraspecific variation, while many of the more morpho-genetically distinct taxa seemed to have species-specific band patterns. Good matches were found between the band patterns of artificial hybrids, those of their known parents, and mixtures of the parental protein extracts. This illustrates the potential use of such a technique for pinpointing possible genome donors of natural hybrids, and especially of polyploids. These comparative band patterns confirmed experimental work on the origin of the hexaploidS. nigrum from the diploidS. americanum and the tetraploidS. villosum, and also supported the suggestion thatS. nigrum contains two genomes from the diploidS. sarrachoides, but not four genomes of the diploidS. americanum.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00985991
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Rates of cross-pollination inLycopersicon pimpinellifolium: Impact of genetic variation in floral characters (1978)
    Springer
    Plant systematics and evolution 129 (1978), S. 31-44 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Solanaceae ; Lycopersicon pimpinellifolium ; Hymenoptera ; Exomalopsis ; Rates of cross-pollination ; floral attractivity ; stigma position ; evolution of floral parameters
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Cross-pollination was tested between different genotypes ofLycopersicon pimpinellifolium in an experimental plot situated in the southerly range of the species. Rates of cross-pollination were found to be highly correlated with flower size and were related to a lesser extent with degree of stigma exsertion. Comparisons of fertility suggest that exsertion of 1.5 mm or more from the anther tube orifice interferes with automatic self-pollination, thereby increasing rates of cross-pollination. A single species ofExomalopsis (Anthophoridae), observed to visit all tested genotypes ofL. pimpinellifolium, was responsible for most of the pollination. Other species of solitary bees and other bee families participated in cross-pollination.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00988982
    Standort Signatur Erwartet Verfügbarkeit
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