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  • 1
    Electronic Resource
    Electronic Resource
    Chromosome number, morphology, pairing, and DNA values of species and hybrids in the genusFallopia (Polygonaceae) (1992)
    Springer
    Plant systematics and evolution 180 (1992), S. 29-52 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Polygonaceae ; Fallopia ; Reynoutria ; Chromosome number ; microdensitometry ; meiosis ; hybridisation ; dioecism ; alien plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The taxa in this study have in the past been treated together in sect.Tiniaria Meissner ofPolygonum L. s.l., and more recently the large erect rhizomatous herbaceous perennials have been separated from the twining annuals and perennials as the generaReynoutria andFallopia respectively. These taxa range in ploidy level from diploid to octoploid, with base numbers of both 10 and 11 present. The plants are primarily Asiatic in distribution, although many of the large erect perennials are now naturalized in many parts of Europe. Cytological examination has revealed the presence of a number of previously unknown hybrid taxa in the British Isles. The readiness with which hybridisation occurs between taxa of differing base number and ploidy level, and similarities revealed in chromosome morphology, meiotic pairing and in DNA C-value, suggest to the authors that these two genera are best amalgamated underFallopia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00940396
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Differences between vertical transfers and native students in four-year institutions (1977)
    Springer
    Research in higher education 7 (1977), S. 145-154 
    Details
    ISSN: 1573-188X
    Keywords: transfers ; financial aid ; individual characteristics ; college student ; achievement ; background variable
    Source: Springer Online Journal Archives 1860-2000
    Topics: Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Data from the National Longitudinal Study of the High School Class of 1972 were drawn to compare those who transfer from two-year colleges and those who enroll in four-year institutions immediately after high school. The comparisons were made on background variables, individual characteristics, and financial aid status. Results indicated that transfers came from lower SES families, and had lower academic ability, high school achievement, and educational aspiration than native students. Transfers were less likely than native students to receive scholarships, fellowships, or grants, and they showed lower achievement in the year after transfer. Implications of these findings are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00981752
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    Paper (German National Licenses)
    Fulltext
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