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Landraces and Obsolete Cultivars of Minor Wheat Species in the Czech Collection of Wheat Genetic Resources

Stehno, Zdenek; Bradova, J.; Dotlacil, Ladislav and Konvalina, Petr (2010) Landraces and Obsolete Cultivars of Minor Wheat Species in the Czech Collection of Wheat Genetic Resources. [Krajové a opomíjené odrůdy minoritních pšenic v české kolekci genetických zdrojů.] Czech Journal of Genetics and Plant Breeding, 46, pp. 100-105.

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Summary

Proportion of landraces in the Czech collection of wheat genetic resources differentiates deeply among wheat species, 4.2 % in bread, 77.6 % in emmer and 80.0 % in einkorn wheat collection. The set of 10 selected emmer wheat landraces has been characterised by high molecular weight glutenin subunits (HMW-GSs), evaluated for 3 years in field trials and described by grain quality parameters. Emmer wheat accessions distinguished considerably in polymorphisms of HMW-GSs. Out of the total number of 10 studied emmer wheat landraces 5 accessions appeared to be homogeneous in the electrophoretic patterns of HMW-GSs and they were formed by a single glutenin line. Much higher crude protein content in comparison with check bread wheat cultivar was detected in all emmer wheat accessions. Proportion of this important component varied between 15.5 and 22.2 %. On the other hand SDS sedimentation, as an important parameter of bread making quality was very low (1.2 - 4.4 ml) and similar situation has been recorded in gluten index. Based on such results the emmer wheat landraces can be considered potentially more suitable for other purposes than for preparation of bread e.g. for different grain mixtures, purée etc.

Summary translation

Převažujícími genetickými zdroji v kolekci genové banky jsou pšenice. Hodnoceny byly rozdíly v obsahu vysokomolekulárních gluteninů. Hodnocen byl také obsah proteinu, který byl v případě pšenice dvouzrnky velmi vysoký.

EPrint Type:Journal paper
Keywords:wheat species, emmer wheat, landraces, grain quality, HMW glutenin subunits
Subjects: Crop husbandry
Crop husbandry > Breeding, genetics and propagation
Research affiliation: Czech Republic > Czech University of Life Sciences (CZU)
Czech Republic > University of South Bohemia (JCU)
Czech Republic > Crop Research Institute (VURV)
ISSN:1212-1975
Deposited By: Předotová, Pavla
ID Code:21247
Deposited On:07 Sep 2012 07:05
Last Modified:07 Sep 2012 07:05
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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