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Variation of morphological and agronomic traits in hybrids of Trifolium pratense × T. medium and a comparison with the parental species

Author

Listed:
  • Hana Jakešová

    (Red Clover and Grass Breeding Hladké Životice, Czech Republic)

  • Jana Řepková

    (Department of Experimental Biology, Masaryk University in Brno, Czech Republic)

  • David Hampel

    (Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic)

  • Lydie Čechová

    (Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic)

  • Jan Hofbauer

    (Agricultural Research Troubsko, Czech Republic)

Abstract

Trifolium pratense L. is a high-yielding and high-quality fodder crop. However, it shows low persistence, which may be overcome by hybridisation with species that produce rhizomes. Hybrids between T. pratense L. and T. medium L. were previously obtained by embryo rescue. The aim of this study was to evaluate 16 characteristics (stem weight, stem length, internode number, length/width ratio of a central leaflet of the trifoliate leaf on the 4th internode, stem thickness on the 4th internode, average leaf area of the trifoliate leaf, weight of dry plant, plant length, stem and head number per plant, head number per stem, seed weight per plant, seed weight per head and dry matter per stem) in the hybrid plants derived from F1 hybrids and in both parental genotypes. The characteristics were evaluated in 500, 745 and 112 hybrid plants in the years 2006, 2008 and 2009, respectively. The significance of the morphological differences was determined by the general linear model and generalised linear model with Poisson distribution with two factors, genotype and year. Some of the examined traits were intermediate in the hybrids. There were significant differences between the hybrids and T. pratense in nearly all the analysed characteristics, except for the following ones: length/width ratio of a central leaflet of the trifoliate leaf on the 4th internode under the top head, plant weight and head number per plant. The stem number per plant was significantly higher in the hybrids compared to both parental species, which could have a positive impact on the yield. Short rhizomes were observed in the hybrids after the harvest of plants in the second harvest year. The stability of this trait and its impact on the perenniality of the hybrids will be investigated in the next years.

Suggested Citation

  • Hana Jakešová & Jana Řepková & David Hampel & Lydie Čechová & Jan Hofbauer, 2011. "Variation of morphological and agronomic traits in hybrids of Trifolium pratense × T. medium and a comparison with the parental species," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 47(1), pages 28-36.
  • Handle: RePEc:caa:jnlcjg:v:47:y:2011:i:1:id:2-2011-cjgpb
    DOI: 10.17221/2/2011-CJGPB
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    Citations

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    Cited by:

    1. Jose Alberto OLIVEIRA & Julio Enrique LÓPEZ & Pedro PALENCIA, 2013. "Agromorphological characterization, cyanogenesis and productivity of accessions of white clover (Trifolium repens L.) collected in Northern Spain," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 49(1), pages 24-35.
    2. Jana DLUHOŠOVÁ & Jana ŘEPKOVÁ & Hana JAKEŠOVÁ & Jan NEDĚLNÍK, 2016. "Impact of interspecific hybridization of T. pratense × T. medium and backcrossing on genetic variability of progeny," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 52(4), pages 125-131.
    3. Jana ŘEPKOVÁ & Jan NEDĚLNÍK, 2014. "Modern methods for genetic improvement of Trifolium pratense," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 50(2), pages 92-99.
    4. Hana JAKEŠOVÁ & Jana ŘEPKOVÁ & Jan NEDĚLNÍK & David HAMPEL & Jana DLUHOŠOVÁ & Martina SOLDÁNOVÁ & Martina OŠŤÁDALOVÁ, 2015. "Selecting plants with increased total polyphenol oxidases in the genus Trifolium," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 51(4), pages 155-161.

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