Agro-biological diversity of Slovene ecotypes and standard varieties of cocksfoot (Dactylis glomerata L.): comparison and agronomic value

Jure ČOP, Klemen ELER

Abstract


Characterisation and evaluation of accessions, e.g. ecotypes of cultivated plants, are the primary task of each agricultural gene bank. In a field experiment, agro-biological diversity and agronomic value of 15 Slovene ecotypes (group 1) and 7 standard varieties (group 2) of cocksfoot (Dactylis glomerata L.) were investigated during the 2015-2019 period. A particular emphasis was given to the comparison of the two groups. The spaced plant experiment with 20 single plants of each treatment entity per replicate was arranged in a randomized complete block design with three replicates. Significant differences among investigated entities were confirmed for all agro-biological traits (p < 0.001). The same holds when the groups were compared (p < 0.001) except for the infection with leaf fungal diseases (p = 0.113).Considering these differences varieties possessed higher agronomic value than ecotypes. In general, the intra-population diversity of Slovene ecotypes was higher than that of standard varieties and represented a higher portion of the ecotype complete variance. Principal component analysis (PCA) of all investigated traits showed a distinctive difference between ecotypes and varieties and higher similarity within the variety group than within the ecotype group. PCA also showed that the ecotypes can be separated into two subgroups, which however cannot be explained by the characteristics of ecotype origin.


Keywords


gene bank; populations; description; evaluation

References


AGFF. (2017). Standardmischungen für den Futterbau Revision 2017-2020. Agrarforschung Schweiz, 8, 1-16.

Bolaric, S., Barth, S., Melchinger, A. E., & Posselt, U. K. (2005). Molecular genetic diversity within and among German ecotypes in comparison to European perennial ryegrass cultivars. Plant Breeding, 24, 257-262. https://doi.org/10.1111/j.1439-0523.2005.01108.x

Boller, B., & Greene, S. L. (2010). Genetic Resources. In: B. Boller, U. K. Posselt & Veronesi F. (Eds.), Fodder Crops and Amenity Grasses (pp. 13-37). New York, Springer-Verlag. https://doi.org/10.1007/978-1-4419-0760-8_2

Boller, B., Peter-Schmid, M. K. I., Tresch, E., Tanner, P., & Schubiger, F. X. (2009). Ecotypes of Italian ryegrass from Swiss permanent grassland outperform current recommended cultivars. Euphytica, 170, 53-65. https://doi.org/10.1007/s10681-009-9963-y

Čop, J., Lavrenčič, A., & Košmelj, K. (2009). Morphological development and nutritive value of herbage in five temperate grass species during primary growth: analysis of time dynamics. Grass Forage Science, 64,122-31. https://doi.org/10.1111/j.1365-2494.2008.00676.x

DLG (Deutsche Landwirtschafts-Gesellschaft). (1997). DLG-Futterwerttabellen - Wiederkäuer. 7., erweiterte und überarbeitete Auflage. Frankfurt am Main, DLG-Verlag.

Fehr, W. (1991). Principles of cultivar development: Theory and technique. Agronomy Books. 1. URL https://lib.dr.iastate.edu/agron_books/1

IPGRI (International Plant Genetic Resources Institute). (1985). Forage grass descriptors. Rome. URL https://www.bioversityinternational.org/fileadmin/user_upload/Descriptors_Forage_Grass.pdf

Last, L., Herzog, F., Boller, B., Widmer, F., & Kölliker, R. (2011). Influence of habitat and management on genetic diversity of Dactylis glomerata in Switzerland. In: E. M. Pötsch, B. Krautzer & Hopkins A. (Eds.), Grassland farming and land management systems in mountainous regions (Grassland Science in Europe, 16) (pp. 562-564). Gumpenstein, Austria. https://doi.org/10.1016/j.ecolind.2013.11.004

Last, L., Lüscher, G., Widmer, F., Boller, B., & Kölliker, R. (2014). Indicators for genetic and phenotypic diversity of Dactylis glomerata in Swiss permanent grassland. Ecological Indicators, 38, 181-191. https://doi.org/10.1186/1471-2156-14-102

Last, L., Widmer, F., Fjellstad, W., Stoyanova, S., & Kölliker, R. (2013). Genetic diversity of natural orchardgrass (Dactylis glomerata L.) populations in three regions in Europe. BMC Genetics, 14, 1-13. https://doi.org/10.1186/1471-2156-14-102

Lindner, R., & Garcia, A. (1997). Genetic differences between natural populations of diploid and tetraploid Dactylis glomerata ssp. izcoi. Grass and Forage Science, 52, 291-297. https://doi.org/10.1111/j.1365-2494.1997.tb02359.x

Martinčič, A., Wraber, T., Jogan, N., Podobnik, A., Turk, B., Vreš, B., Ravnik, V., Frajman, B., Strgulc Krajšek, S., Trčak, B., Bačič, T., Fischer, M. A., Eler, K., & Surina, B. (2007). Mala flora Slovenije: ključ za določanje praprotnic in semenk. Tehniška založba Slovenije.

McGrath, S. K. (2008). The characterisation of genetic diversity of a collection of perennial ryegrass (Lolium perenne L.). Thesis (367 p.), Trinity College (Dublin, Ireland), Department of Botany. URL http://hdl.handle.net/2262/86495

Pagnotta, M. A., Annicchiarico, P., Farina, A., & Proietti, S. (2011). Characterizing the molecular and morphophysiological diversity of Italian red clover. Euphytica, 179, 393-404. https://doi.org/10.1007/s10681-010-0333-6

R Core Team. (2019). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org/

Suter, D., Hirschi, H., Frick, R., & Aebi, P. (2013). Knaulgras: Prüfergebnisse von 31 Sorten. Agrarforschung Schweiz, 4, 324-329. https://doi.org/10.1007/978-3-531-19729-6_4

Tuna, M., Khadka, D. K., Shrestha, M. K., Arumuganathan, K., & Golan-Goldhirsh, A. (2004). Characterization of natural orchardgrass (Dactylis glomerata L.) populations of the Thrace Region of Turkey based on ploidy and DNA polymorphisms. Euphytica, 135, 39-46. https://doi.org/10.1023/B:EUPH.0000009537.08697.4e

UPOV (The International Union for the Protection of New Varieties of Plants). (2002). Guidelines for the conduct of tests for distinctness, uniformity and stability. Cocksfoot (Dactylis glomerata L.). Geneva. URL https://www.upov.int/edocs/tgdocs/en/tg031.doc

Xie, W. G., Lu, X. F., Zhang, X. Q., Huang, L. K., & Cheng, L. (2012). Genetic variation and comparison of orchardgrass (Dactylis glomerata L.) cultivars and wild accessions as revealed by SSR markers. Genetics and Molecular Research, 11, 425-433. https://doi.org/10.4238/2012.February.24.1




DOI: http://dx.doi.org/10.14720/aas.2020.115.1.1407

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