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  • intergeneric hybrids  (3)
  • Springer  (3)
  • 1
    Digitale Medien
    Digitale Medien
    Intergeneric crosses with Fragaria and Potentilla. I. Crosses between Fragaria moschata and Potentilla fruticosa (1985)
    Springer
    Euphytica 34 (1985), S. 725-735 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Fragaria moschata ; Potentilla fruticosa ; intergeneric hybrids ; embryo culture ; parthenogenesis ; aneuploidy ; polyploidy ; chromosome elimination ; genetic variation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Crosses between Fragaria moschata (2n=42) and Potentilla fruticosa (2n=14) produced many seeds; about half of these germinated, but only nine plants were obtained from 554 seedlings. Five plants died without flowering, and four were vigorous but sterile. Four plants had the expected chromosome number (2n=28), one plant had 21 chromosomes, and four were aneuploid with 23, 24, 25 and 27 chromosomes respectively. Response to growth substances giving elongated stem internodes and swollen but not succulent receptacles provided evidence that two of the plant were hybrids. It is suggested that all nine plants originated from a normal fertilisation which was followed in some cases by chromosome elimination at an early stage of embryo development.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00035410
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Pollen storage of Fragaria and Potentilla (1989)
    Springer
    Euphytica 41 (1989), S. 65-69 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Fragaria ; Potentilla ; intergeneric hybrids ; pollen storage ; temperature ; relative humidity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Low temperature and humidity were used for the storage of pollen of four species of Fragaria (2n=14, 42 and 56) and two species of Potentilla (2n=14). The stainability of Fragaria pollen was assessed over a number of years by use of aceto-carmine stain and its viability by cross-pollinations; stainability of Potentilla pollen was assessed by acetocarmine. Fragaria pollen so stored remained stainable for seven years and showed the ability to set seed for three years. over the latter period, aceto-carmine staining gave a reasonable prediction of seed set produced by the stored pollen of Fragaria and so is of value in estimating pollen viability in that genus. Potentilla pollen remained stainable for three years.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00022412
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    In tergeneric crosses with Fragaria and Potentilla. II. Crosses between the progeny of Fragaria moschata x Potentilla fruticosa and the original parents (1985)
    Springer
    Euphytica 34 (1985), S. 737-744 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Eragaria moschata ; Potentilla fruticosa ; intergeneric hybrids ; backcrossing ; embryo culture ; parthenogenesis ; ancuploidy ; polyploidy ; unreduced gametes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary An aneuploid hybrid (2n=23) of Fragaria moschata (2n=42) and Potentilla fruticosa (2n=14) was backcrossed with pollen of both parents, separately and combined in a pollen mixture. Seven vigorous progeny were obtained. The origin of the exeptional chromosome numbers, 2n=44, 49, 63, 63, 65, 67, 67, is discussed, and it is shown that each of the numbers could be produced by the fertilisation of unreduced and double unreduced gametes of the hybrid by normally reduced gametes of one of the parental species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00035411
    Standort Signatur Einschränkungen Verfügbarkeit
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