IDEAS home Printed from https://ideas.repec.org/a/caa/jnlhor/v32y2005i4id3780-hortsci.html
   My bibliography  Save this article

Polyploidy effects on frost tolerance and winter survival of garden pansy genotypes

Author

Listed:
  • A. D. Lagibo

    (Faculty of Horticulture, Mendel University of Agriculture and Forestry Brno, Lednice, Czech Republic)

  • F. Kobza

    (Faculty of Horticulture, Mendel University of Agriculture and Forestry Brno, Lednice, Czech Republic)

  • P. Suchánková

    (Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic)

Abstract

This study was conducted to interpret the differences in frost tolerance and winter survival between 8x, 10x, 12x, 14x, and 16x ploidy levels of garden pansy (Viola × wittrockiana Gams) genotypes grown in the field conditions. Plants of each genotype were analyzed for their ploidy levels using flow cytometry. The chlorophyll fluorescence parameters were measured with portable chlorophyll fluorometer in the greenhouse and in the field at different time intervals. Increased frost stress generally reduced the fluorescence values in all genotypes. However, the genotypes differed significantly in their responses to frost as they were exposed to minimum temperatures of 1°C to -7.7°C in the field. Based on the percentage reduction in FV/FM values against -7.7°C temperature the hexadecaploids were ranked as sensitive to intermediate followed by 12x (sensitive), and genotypes with 10x and 14x ploidy levels were tolerant as the controls. The winter survival rate of hexadecaploids was by 7 to 9% lower than in the controls followed by the genotype with 12x and both genotypes with 10x and 14x ploidy levels were about equal to the controls. On the other hand, the content of photosynthetic pigments (chlorophyll a, b and total carotenoids) was the highest in hexadecaploids and tended to increase with increasing ploidy level. Further, the results gave insight that chlorophyll fluorescence could be applied directly in the field conditions to screen genotypes and select plants having higher frost tolerance in combination with improved aesthetic qualities.

Suggested Citation

  • A. D. Lagibo & F. Kobza & P. Suchánková, 2005. "Polyploidy effects on frost tolerance and winter survival of garden pansy genotypes," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 32(4), pages 138-146.
  • Handle: RePEc:caa:jnlhor:v:32:y:2005:i:4:id:3780-hortsci
    DOI: 10.17221/3780-HORTSCI
    as

    Download full text from publisher

    File URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3780-HORTSCI.html
    Download Restriction: free of charge

    File URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3780-HORTSCI.pdf
    Download Restriction: free of charge

    File URL: https://libkey.io/10.17221/3780-HORTSCI?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. P. Jadrná & F. Kobza & O. Plavcová, 2009. "Polyploidization of Pelargonium × hortorum L. H. Bailey in greenhouse conditions," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 36(1), pages 31-37.
    2. Klaudia Sychta & Aneta Słomka & Elżbieta Kuta, 2020. "Garden pansy (Viola × wittrockiana Gams.) - a good candidate for the revitalisation of polluted areas," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(6), pages 272-280.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:caa:jnlhor:v:32:y:2005:i:4:id:3780-hortsci. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Ivo Andrle (email available below). General contact details of provider: https://www.cazv.cz/en/home/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.