Evaluation of emmer wheat genetics resources aimed at dietary food production

Emmer wheat cultivated by organic farmers is used as a component of some bio (organic) food products. Its positive influence on consumer health is caused by grain composition. In the set of 8 emmer wheat accessions, the main grain components, bread making characteristics and contents of health supporting chemical substances such as total dietary fibre content and its components, content of total polyphenols plus catechin and ferulic acid contents, vitamins of the B group and E plus total content of carotenoids were evaluated by standard methods

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

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

Drought Tolerance of Land Races of Emmer Wheat in Comparison to Soft Wheat

As water deficiency becomes a more frequent cause of the reduction in wheat yield levels, the search for donors of drought tolerance to be bred into adapted land races becomes urgent. Drought tolerance has been evaluated by the 13C discrimination method in six land races of emmer wheat (Triticum dicoccum SCHRANK), compared with land races, obsolete cultivars and modern varieties of soft wheat (Triticum aestivum L.). The results of a two-year trial show that most of the genetic resources of emmer wheat, and intermediate land races of wheat are predisposed to drought tolerance. These varieties respond to dry conditions more sensitively, as they close their pores earlier (a lower value of the discrimination of 13C isotope). As for other land races and the top modern varieties of soft wheat, they are not thought to be predisposed to drought tolerance and their crop stands are liable to serious damage

Agroekologie: východiska pro udržitelné zemědělské hospodaření

Kniha ukazuje, že k dlouhodobému řešení problémů moderního zemědělství je možno dospět jedině restrukturalizací a takovou správou zemědělských systémů, která změní jejich podobu a fungování na základě agroekologie. Agroekologie je věděcká disciplína, která využívá ekologické teorie ke studiu, designu, managementu a hodnocení produktivních zemědělských systémů, jež současně chrání přírodní zdroje. Kniha se zaměřuje jak na tradiční obhospodařování pro praktické zemědělce tak sofistikované využití ekosystémových poznatků. Kniha slouží jako učebnice pro moderní zemědělský provoz tak pro akademickou obec