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  • 1
    Electronic Resource
    Electronic Resource
    Improved techniques for the induction and isolation of polyploids in the genus Fragaria (1976)
    Springer
    Euphytica 25 (1976), S. 725-732 
    Details
    ISSN: 1573-5060
    Keywords: Fragria sp. ; strawberry ; polyploidization ; colchicine ; polyploids ; induction ; survival
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The sensitivity of Fragaria seedlings to colchicine is dependent on the plant organ that is treated. Complete immersion of seedlings in a 1.5% colchicine solution results in total lethality, whereas the survival rates were more than 75% even at concentrations of 3.0% when only shoot apices were treated. High proportions of polyploids were isolated by treating shoot apices of seedlings with a 2.0% colchicine solution for 24–28 h. The ‘dropper’ method is preferred to the ‘tube’ method as it involves a minimum of manipulation and requires simple equipment. A differential response to colchicine was observed within and between different diploid species, diploid and tetraploid hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041612
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Pollen storage of Fragaria and Potentilla (1989)
    Springer
    Euphytica 41 (1989), S. 65-69 
    Details
    ISSN: 1573-5060
    Keywords: Fragaria ; Potentilla ; intergeneric hybrids ; pollen storage ; temperature ; relative humidity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022412
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
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