Consulta: creatorFacets:"Stehno, Zdenek"
Registros recuperados: 31
Data/hora: 02/06/2024 16:48:05

Testing of Suitability of Ideotype and Varieties of Wheat for Organic and Low Input Agriculture
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Moudry, Jan (Jr.).
The methodology takes the different ideotype of plant that´s suitable for the environment-friendly farming systems into account. The methodology is being tested at several varieties and species of genus Triticum L. (wheat ? winter wheat, spring wheat, landraces, conventional varieties and the varieties recommended for organic farming system, emmer wheat). The methodology is dividend into four part: morphological, biological, economic and quality characters.
Tipo: Journal paper
Palavras-chave: Crop husbandry Breeding; Genetics and propagation.
Ano: 2007

Spring forms of spelt landraces (Triticum spelta L.) and their suitability for Organic Farming
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan.
Organic farmers are interested in the growing of spring spelt wheat forms (Triticum spelta L.). Therefore, the important agronomical characteristics and baking quality of  six spring spelt wheat landraces were studied and evaluated. The studied and evaluated cultivars were inclined to lodging and wheat diseases. Their yield rate is  determined by the length of the spike and the weight of one thousand grains. The grain yield and the crude protein yield per hectare achieved the same level in organic farming. The spring spelt wheat forms stand out in high protein content and wet gluten content; the gluten was, nevertheless, weaker and less swollen.
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2011
URL: http://orgprints.org/20766/1/Korea_PK_2012.pdf

Emmer wheat using and growing in the Czech Republic
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Capouchova, Ivana; Moudry, Jan (Jr.); Juza, Martin; Moudry, Jan.
Emmer wheat [(Triticum dicoccum Schrank (Schuebl)] is after bread, durum and spelt wheat further species of wheat  used for economic purposes. Organic farmers and producers have become more and more interested in marginal crops  such as the tetraploid emmer wheat because of its suitability for organic farming. In spite of its historical role, present distribution of emmer is very limited. The work analyzes the problem of growing possibilities of emmer and its suitability for cultivation in organic farming. In the Czech Republic it is grown only a few farms, but in Austria is more popular now. Possible candidates for the cultivation of emmer has several options about where to obtain a suitable variety. The best option appears to be the choice of legally...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010
URL: http://orgprints.org/20770/1/IASI_%2D_konvalina_a_kol..pdf

Evaluation of emmer wheat genetics resources aimed at dietary food production
Provedor de dados: 21
Autores: Stehno, Zdenek; Paulickova, I.; Bradova, J.; Konvalina, Petr; Capouchova, Ivana; Maskova, E.; Gabrovska, D.; Holasova, M.; Fiedlerova, V.; Winterova, R.; Ouhrabkova, J.; Dotlacil, Ladislav.
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.
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection.
Ano: 2011
URL: http://orgprints.org/20765/1/JLS%2DE_20100728%2D1.pdf

Ancient Wheat Species Can Extend Biodiversity of Cultivated  Crops
Provedor de dados: 21
Autores: Moudry, Jan; Konvalina, Petr; Stehno, Zdenek; Capouchova, Ivana; Moudry, Jan (Jr.).
Wheat genetic resources may be grown in organic farming systems or in less favourable areas for bread wheat species. Characteristics of hulled wheat species (23 varieties of einkorn, emmer wheat, spelt wheat) were studied and evaluated within a two-year trial period (which was executed on certified organic fields) and they were compared to characteristics of landraces and modern bread wheat varieties. The main aim of our study was to evaluate the potential uses of genetic resources of wheat in organic farming. The hulled wheat species were resistant to mildew and brown rust. Their grains were less contaminated with DON than the grains of the control varieties. The grain yield rate was reduced. Per hectare crude protein yield was higher in spelt and emmer...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2011
URL: http://orgprints.org/20763/1/SRE.pdf

Volba osiva obilnin v ekologickém zemědělství
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Prokinová, Evženie; Stehno, Zdenek; Blaha, Ladislav; Moudry, Jan.
Metodika přináší informace o aktuálním stavu v oblasti legislativy a vyuţití ekologicky certifikovaného osiva v ekologickém zemědělství. Pozornost je v první řadě věnována informačním zdrojům, ve kterých je možné nalézt informace o dostupnosti ekologicky certifikovaných osiv a možnostech jeho použití v produkci rostlin. Dále je uveden postup volby osiva, který je v souladu s platnou legislativou. Metodika by měla posloužit ekologicky hospodařícím zemědělcům jako jeden z rozhodovacích nástrojů při volbě osiva konkrétní odrůdy.
Tipo: Book
Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2010
URL: http://orgprints.org/20812/1/Metodika_osivo_3.0_FINAL.pdf

Agronomic characteristics of the spring forms of the wheat  landraces (einkorn, emmer, spelt, intermediate bread wheat)  grown in organic farming
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan.
Organic farmers look to the possibilities of growing neglected crops, such as the spring forms of hulled wheat – einkorn, emmer and spelt – for support in developing the organic farming system. In 2008, 169 landraces from the gene bank at the Crop Research Institute in Prague were tested on certifi ed organic plots. The experiment was aimed at fi nding suitable varieties for the organic farming system. In summary, our fi ndings show that einkorn (Triticum monococcum L.) and emmer wheat [Triticum dicoccum Schrank (Schuebl)] are resistant to powdery mildew and brown rust, spelt wheat (Triticum spelta L.) is less resistant to these two diseases, and the intermediate forms of bread wheat are very sensitive to such infestation. The  varieties evaluated incline...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010
URL: http://orgprints.org/20768/1/JOA.pdf

The Critical Point of Conventionally Bred Soft Wheat Varieties in Organic Farming Systems
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Moudry, Jan.
Nowdays, wheat is the most important crop for organic farming system. However, the varieties breeded and tested in the conditions of organic farming system are still missing. It gives rise to very low level of yield in the Czech Republic (less than 50% of level of convention  one in the same conditions). One of the reasons is that the ideotype of organic breeded variety is different from conventional one. The varieties suitable for organic farming system differ in many respects from those adopted in conventional farming. The first difference is obvious from the conventional tests of use value of the varieties, taking just some direct indicators influencing the main parameter (yield) into account. Generally speaking, the features to be tested can be divided...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2009
URL: http://orgprints.org/20772/1/The_critical_point_if_conventionally_bred_soft_wheat_varieties_in_organic_farming_systems.pdf

Skladba bílkovinného komplexu zrna minoritních druhů jarní pšenice z ekologického systému hospodaření a možnosti jejich využití
Provedor de dados: 21
Autores: Skerikova, A.; Capouchova, Ivana; Konvalina, Petr; Stehno, Zdenek.
Soubor genetických zdrojů pšenice jednozrnky, dvouzrnky, jarní špaldy a přesívkových forem pšenice seté ze sbírek genobanky VÚRV Praha-Ruzyně, vypěstovaných v přesných polních pokusech v podmínkách ekologického systému tří pokusných lokalit (Praha-Ruzyně, Praha-Uhříněves a České Budějovice) byl hodnocen z pohledu obsahu N-látek v sušině zrna a zastoupení jednotlivých frakcí bílkovin zrna. Minoritní druhy pšenice se ve srovnání s kontrolními odrůdami pšenice seté vyznačovaly vyšším obsahem N-látek v sušině zrna, ale také rozdíly v zastoupení jednotlivých frakcí bílkovin ? především vyšším zastoupením nutričně cenných albuminů a globulinů a niţším zastoupením lepkových frakcí gliadinů a gluteninů. To naznačuje vyšší nutriční, ale horší technologickou,...
Tipo: Journal paper
Palavras-chave: Crop husbandry.
Ano: 2010

Current situations in organic cereal seed offer in the Czech Republic
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Capouchova, Ivana; Huda, Petr; Moudry, Jan; Moudry, Jan (Jr.).
Organic farmers are obliged, in compliance with the valid legislation, to use seed originating from the organic production when establishing the crop stands. In a survey we found certified organic cereal seed is used on 6 %, conventional untreated seed on 37 %, and farm seed on 57 % (of the organically farmed area in the Czech Republic). The main reasons for that are as follows: the insufficient surface of land intended for the reproduction of organic seed, the low proportion of accepted seed coming from the accepted reproduction surface. Therefore, low-quality farm seed is used on a large proportion of organically farmed land, which has a negative effect on the yield level of the cereals. These observations were also confirmed by results obtained in a...
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2011
URL: http://orgprints.org/20758/1/CZU_2011_PK_Aktu%C3%A1ln%C3%AD_situace__%2D_bioosiva.pdf

Produkce osiv hlavních obilnin v ekologickém zemědělství
Provedor de dados: 21
Autores: Janovska, Dagmar; Stehno, Zdenek.
Kvalita osiva ovlivňuje významnou měrou následnou produkční schopnost porostu, a to nejen jeho vitalitu a výnos, ale i kvalitu. Nedostatky v kvalitě osiva a během ošetřování porostu není již možné odstranit posklizňovou úpravou. V současné době je v ekologickém zemědělství velmi rozšířené používání takzvaného farmářského osiva.
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Crop husbandry.
Ano: 2010

Klíčivost a vitalita osiva vybraných druhů a odrůd jarních obilnin
Provedor de dados: 21
Autores: Chaloupsky, Radovan; Honsova, Hana; Capouchova, Ivana; Konvalina, Petr; Stehno, Zdenek.
V laboratorních pokusech s pěti druhy jarních obilnin byla testována semenářská a biologická hodnota osiva (energie klíčení, klíčivost, energie vzcházení, vzcházivost, hmotnost tisíce semen). Porovnávalo se osivo ekologické certifikované, konvenční, farmářské pocházející z lepších pěstitelských podmínek a farmářské z horších pěstitelských podmínek. Osivo pocházelo ze sklizně roku 2010. V pokusech byly zjištěny rozdíly mezi jednotlivými kategoriemi osiva. V laboratorních pokusech se potvrdilo, že větší vypovídací schopnost o kvalitě osiva má laboratorní vzcházivost než standardní laboratorní klíčivost. Při porovnávání kategorií osiva se ukázalo, že se farmářské osivo získané z lepších pěstitelských podmínek může vyrovnat certifikovanému.
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2013

Differences in the Morphological Characteristics of the Land Races of the Soft and Emmer Wheat in Relation to the Modern Varieties
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Capouchova, Ivana; Moudry, Jan; Sramek, J.; Moudry, Jan (Jr.).
For the organic farmers there is important question which varieties of wheat are right for organic farming in Less Favoured Areas. Modern varieties of wheat are bred in the conditions of conventional (high imput) farming. That is why the organic farmers asked about the suitability of land  races of soft wheat (Triticum aestivum L.) or different species like emmer wheat grown in the past (Triticum dicoccum SCHUEBL). The paper results from the study of fourty land races, two intermediate and ten modern varieties of soft wheat in comparison to ten land races of emmer wheat at two locations in the Czech Republic. We evaluated tuft shape, length of plant, length and width of flag leaf, length and density of spike and awnedness. The  modern varieties of soft...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2009
URL: http://orgprints.org/20774/1/Differences_in_the_morphological_characteristics_of_the_land_races_of_the_soft_and_emmer_wheat_in_relation_to_the_modern_varieties.pdf

Genetic resources of hulled wheat species in Czech organic farming
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek.
As organic farmers are searching for new market and sale opportunities, the organic farming system may grow and process a wider range of species than the conventional farming system. Concerning wheat especially the hulled wheat species einkorn, emmer wheat and spelt wheat are in recent years of growing interest for organic farmers. Field trials were carried out at three Czech locations from 2009 to 2010 to study the performance of 4 einkorn, 8 emmer wheat and 7 spelt wheat accessions. All trials were spring sown and bread wheat variety SW Kadrilj was used as check. The results show that some accessions of the hulled wheat species are inclined to lodging. On the other hand, they are resistant to foliar diseases, e.g. powdery mildew and leaf rust. Hulls...
Tipo: Conference paper, poster, etc.
Palavras-chave: Breeding; Genetics and propagation.
Ano: 2012
URL: http://orgprints.org/20579/1/Gumpenstein.pdf

Weaknesses of the emmer wheat genetic resources and possibilities of its improvement for low-input and organic farming systems
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan.
Emmer wheat is suitable for organic and low-input farming systems, as it contributes to the enhancement of agrobiodiversity and an extension of the range of crop species with a higher added value. Although it has been grown for a very long time, it is now rarely utilised. The results of research into and examination of six cultivars coming from the genetic resources of the gene bank in Prague are presented. Particular morphological, biological, economic and quality characteristics were examined in respect of a cultivar’s ideotype for the organic farming system. A number of criteria for selection were proposed on the basis of an examination of particular characteristics and relationships. They respect the principles of breeding of cultivars for the organic...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010

Differences in Yield Parameters of Emmer in Comparison with Old and New Varieties of Bread Wheat
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan.
Emmer wheat (Triticum diccocum Schrank) belonged to the most frequent species of cereals in the past. Nowadays, it is grown in arid and montane areas in particular. Interest in this cereal species has increased, as it is tolerant to biotic and abiotic stressing factors. Therefore, yield parameters were evaluated in three-year (2007, 2008 and 2010) trials that were carried out in two different localities in the Czech Republic. Results of the research were compared to characteristics of four old and two top  modern bread wheat (Triticum aestivum L.) cultivars. The emmer wheat varieties were resistant to usual wheat diseases. They formed their yield by a quantity of productive tillers (2.5), whereas the varieties of bread wheat had less productive tillers...
Tipo: Journal paper
Palavras-chave: Breeding; Genetics and propagation.
Ano: 2012
URL: http://orgprints.org/20759/1/AJAR_2012.pdf

Vybrané biologické vlastnosti a zdravotní stav  osiva jarních druhů obilnin v ekologickém systému hospodaření
Provedor de dados: 21
Autores: Capouchova, Ivana; Prokinová, Evženie; Honsova, H.; Konvalina, Petr; Stehno, Zdenek; Blaha, Ladislav; Hosnedl, V.; Chaloupský, R.
U osiva různého původu (certifikované ekologické, farmářské z lepších a horších půdně-klimatických podmínek, konvenční nemořené) vybraných odrůd jarního ječmene a jarní pšenice jsme hodnotili zdravotní stav a vybrané biologické vlastnosti; následně byly hodnoceny výnosy porostů vypěstovaných z tohoto osiva v podmínkách ekologického zemědělství. U farmářského osiva z horších podmínek jsme ve srovnání s ostatními kategoriemi osiva zaznamenali horší zdravotní stav, zejména vyšší výskyt hub Fusarium spp. V klíčivosti osiva různého původu nebyly zaznamenány větší rozdíly, naproti tomu v energii klíčení a vzcházení, laboratorní a polní vzcházivosti dosáhlo farmářské osivo z horších podmínek znatelně horších výsledků. Porosty vypěstované z farmářského osiva z...
Tipo: Journal paper
Palavras-chave: Crop husbandry.
Ano: 2010

Volba druhu a odrůdy pšenice v ekologickém zemědělství (certifikovaná metodika)
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan.
Metodika přináší informace o možnostech využití širší druhové diverzity rodu Triticum L. v ekologickém zemědělství. Volba vhodného druhu nebo odrůdy pro konkrétní půdně-klimatické podmínky farmy je stejně jako volba osiva jedním ze základních stěžejních opatření, vedoucí ke zvýšení efektivity hospodaření na orné půdě. Kromě obecných zásad získá uživatel metodiky také informaci o specificích volby odrůdy pluchatých pšenic, s nimiž nemají ekologičtí farmáři tolik zkušenosti. Metodika by měla posloužit ekologickým zemědělcům, poradcům, studentům zemědělsky zaměřených škol a široké odborné veřejnosti jako jeden z rozhodovacích nástrojů při výběru druhu pšenice a volbě konkrétní odrůdy.
Tipo: Book
Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2010
URL: http://orgprints.org/20811/1/Metodika_odr%C5%AFdy_5.0_FINAL.pdf

Drought Tolerance of Land Races of Emmer Wheat in Comparison to Soft Wheat
Provedor de dados: 21
Autores: Konvalina, Petr; Moudry, Jan; Dotlacil, Ladislav; Stehno, Zdenek; Moudry, Jan (Jr.).
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...
Tipo: Journal paper
Palavras-chave: Crop husbandry Breeding; Genetics and propagation.
Ano: 2010

Vlastnosti jarních forem krajových odrůd pšenice špaldy (Triticum spelta L.) a jejich vhodnost pro ekologické zemědělství
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan.
Ze strany ekologických zemědělců je zájem o pěstování jarních forem pšenice špaldy (Triticum spelta L.), proto jsme zhodnotili agronomicky významné znaky a pekařskou jakost šesti krajových odrůd jarní špaldy. Hodnocené odrůdy byly náchylné k chorobám pšenice a k poléhání. Výnos tvořily délkou klasu a hmotností tisíce zrn. Výnos zrna byl na nižší úrovni, ale hektarový výnos hrubého proteinu byl na stejné úrovni. Předností jarních špald byl vysoký obsah proteinu a mokrého lepku, který však byl slabší a méně bobtnavý.
Tipo: Journal paper
Palavras-chave: Crop husbandry Breeding; Genetics and propagation.
Ano: 2010

Morphological and biological characteristics of the land races of the spring soft wheat grown in the organic farming system
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan.
Organic farmers have become more interested in the marginally grown (neglected) cultivars, as spring forms of the hulled wheat varieties (eincorn, emmer wheat, spelta wheat) or intermediate forms of the soft wheat. 173 land races from the gene bank at the RI in Praha-Ruzyně were grown on the organic certified parcel and evaluated in 2008. The trial aimed to evaluate the conditions of the competitiveness to weeds, tolerance to diseases, assimilation of the sun shine and establishment of the yield. The results show that all the evaluated material inclines to the competitiveness to weeds. This ability is, nevertheless, reduced because of the inclination to the lodging (all the cultivars have long weak stalks). Eincorn and emmer wheat are resistant to mildew...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010
URL: http://orgprints.org/20769/1/jcea112%2D11.pdf

Wheat Growing and Quality in Organic Farming
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Capouchova, Ivana; Moudry, Jan.
This chapter will present criteria of the selection of suitable varieties for the organic farming system, depending on land and climatic conditions of a farm, current legislation, availability of seeds, options of the final use, etc. Data in this chapter are based on results of the trials carried out by authors on their working places and a discussion on o given topic. Exact small-plot trials with particular selected varieties (bread and hard wheat) and genetic resources of hulled wheat species (einkorn, emmer wheat, spelt wheat) were established on the authors' working places between 2005 and 2010. Significant and important characteristics for the organic farming (morphological, biological characteristics, yield formation and structure of yield,...
Tipo: Book chapter
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2012
URL: http://orgprints.org/20757/1/InTech%2DWheat_growing_and_quality_in_organic_farming.pdf

Landraces and Obsolete Cultivars of Minor Wheat Species in the Czech Collection of Wheat Genetic Resources
Provedor de dados: 21
Autores: Stehno, Zdenek; Bradova, J.; Dotlacil, Ladislav; Konvalina, Petr.
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...
Tipo: Journal paper
Palavras-chave: Crop husbandry Breeding; Genetics and propagation.
Ano: 2010

Current conditions for seed use in the Czech organic farming
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Huda, P.; Blaha, Ladislav; Moudry, Jan (Jr.); Moudry, Jan.
Council Regulation (EC) No. 834/2007 of 28 June 2007 on organic production and labelling of organic products, and Commission Regulation (EC) No. 889/2008 of 5 September 2008 laying down detailed rules for the implementation of Council Regulation, are the most important European legislative instructions on organic farming. They lay down a permit to use just organic seeds for establishment of organic crop stands. Such seeds have to originate from the plants being grown in compliance with organic farming rules for at least one generation. Organic farmers are obliged, in compliance with the above-mentioned legislation, to use seeds originating from organic production when establishing crop stands. Otherwise, they are allowed to use their own seeds or they may...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2011
URL: http://orgprints.org/20764/1/Iasi_PK_2011.pdf

Fusarium Identification by PCR and DON Content in Grain of Ancient Wheat
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan.
Fusarium infestation and DON content were studied in genetic resources of spring wheat (einkorn, emmer wheat, spelt wheat, intermediate forms of bread wheat). The study aimed at the comparison of grain contamination rates in various wheat species being grown in organic farming systems. The trials were established on certified organic parcels in two different localities in the Czech Republic in 2009 and 2010. The PCR method and specific primers were used to detect Fusarium. The proportion of deoxynivalenol (DON) was indicated and measured by the immuno-affinity chromatography (ROSA® DON Quantitative Test). The grain DON contamination rate (1.25 mg/kg) was set up in compliance with the European Commission (EC) Regulation No. 1126/2007. This regulation sets...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection.
Ano: 2011

Spike productivity in relation to yield as criterion for emmer wheat breeding
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan.
Landraces, which are unbred cereal species, and include in particular the tetraploid emmer wheat, have become an important focus for the activities of local or organic farmers, processors and consumers of organic products. This study is based on analyses of the spike productivity, harvest index and grain yield of six emmer wheat landraces. It aims to find suitable criteria for the selection of cultivars and varieties which may contribute to the increase in the productivity of the emmer wheat. The cultivars and varieties most commonly used have short dense spikes which have a negative effect on the grain yield, as the spike density is negatively correlated with the weight of thousand grains (TGW), the weight of the grains in the spikes, the number of grains...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2011
URL: http://orgprints.org/20760/1/RAR_%2D_Konvalina.BT..2011%2D1.pdf

Differences in grain/straw ratio, protein content and yield in landraces and modern varieties of different wheat species under organic farming.
Provedor de dados: 21
Autores: Konvalina, Petr; Stehno, Zdenek; Capouchova, Ivana; Zechner, Elisabeth; Berger, Sandra; Grausgruber, Heinrich; Janovska, Dagmar; Moudry , Jan.
Hulled wheat species (einkorn, emmer, spelt) are presumed to be an alternative to bread wheat in organic agriculture since the yield penalty is less pronounced under organic farming and generally higher prices can be achieved for specialty grains. The present study analyzed differences between wheat species with respect to biomass production, harvest index, grain yield and protein content. Spring hulled wheat genetic resources and bread wheat check cultivars were grown in organic field trials in the Czech Republic and Austria between 2010 and 2012. Generally, hulled wheat species were inferior in grain yield and distribution of assimilates to the grain compared to modern bread wheat. Biomass production of some emmer and spelt landraces was similar to bread...
Tipo: Journal paper
Palavras-chave: Farming Systems Breeding; Genetics and propagation.
Ano: 2014

Composition of essential amino acids in emmer wheat landraces, old and modern varieties of bread wheat
Provedor de dados: 21
Autores: Konvalina, Petr; Capouchova, Ivana; Stehno, Zdenek; Moudry, Jan (Jr.); Moudry, Jan (Jr.).
Tetraploid emmer wheat [(Triticum dicoccum (Schrank) Schuebl] has become a more attractive crop for growing in marginal areas and for the organic farming system. As it provides a lower yield rate and has a specific quality, it is an exclusive food crop. Therefore, the proportion and nutritive quality of particular essential amino acids (threonine, valine, isoleucine, leucine, tyrosine, phenylalanine, lysine, methionine) and the total protein content were studied and evaluated in three-year trials carried out in two different localities. Furthermore, old and modern bread wheat varieties were compared. Results of our research confirmed a high crude protein content in grains of all the landraces of the emmer wheat. The emmer wheat variety contained 5% more...
Tipo: Journal paper
Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection.
Ano: 2011

Pěstování obilnin a pseudoobilnin v ekologickém zemědělství
Provedor de dados: 21
Autores: Konvalina, Petr; Moudry, Jan; Kalinova, Jana; Capouchova, Ivana; Stehno, Zdenek.
V metodice je zpracována problematika pěstování obilnin a pseudoobilnin jako hlavních tržních plodin ekologického zemědělství v ČR. První část zahrnuje obecné zásady pěstování rostlin (obilnin a pseudoobilnin). Zpracovány jsou základní legislativní normy a dotační tituly. Dále je důraz kladen na volbu vhodných druhů a odrůd. Významná je část věnovaná výživě a hnojení, osevním postupům, regulaci škodlivých činitelů, ale také finalizaci celoroční práce farmáře a to sklizni a posklizňové úpravě bioprodukce. V části věnované pěstování konkrétních druhů je kladen důraz na pěstování pšenice seté (ozimé i jarní formy), opomíjeny ale nejsou ani další pluchaté pšenice jako je špalda, dvouzrnka nebo jednozrnka. Další druhy jsou reprezentovány ječmenem, tritikalem,...
Tipo: Book
Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2008
URL: http://orgprints.org/20810/1/9.f.g_metodika.pdf

Technologická jakost minoritních druhů pšenice z ekologického způsobu pěstování a možnosti jejich využití
Provedor de dados: 21
Autores: Skerikova, A.; Capouchova, Ivana; Stehno, Zdenek; Konvalina, Petr; Moudry, Jan; Dotlacil, L.
Soubor genetických zdrojů pšenice jednozrnky, dvouzrnky, jarní špaldy a přesívkových forem pšenice seté ze sbírek genobanky VÚRV Praha-Ruzyně, vypěstovaných v přesných polních pokusech v podmínkách ekologického systému dvou pokusných lokalit (Praha-Ruzyně a České Budějovice) byl hodnocen z pohledu ukazatelů pekařské jakosti a vhodnosti pro ekologické zemědělství. Nejvyšší obsah N-látek v sušině zrna (v průměru 17 ? 18 %) byl zjištěn u pšenice špaldy, následovaly přesívky (16 ? 17 %), jednozrnka a dvouzrnka (15 ? 17 %); kontrolní odrůdy pšenice seté cca 13 %. Hodnoty Gluten Indexu a SDS-testu minoritních druhů pšenice (zejména jednozrnky a dvouzrnky) byly naproti tomu ve srovnání s kontrolními odrůdami znatelně niţší, vypovídající o slabší pekařské kvalitě...
Tipo: Journal paper
Palavras-chave: Crop husbandry.
Ano: 2009

Porovnání vybraných znaků farmářských a certifikovaných osiv obilnin
Provedor de dados: 21
Autores: Dvoracek, Vaclav; Prohaskova, Anna; Bradova, Jana; Blaha, Ladislav; Stehno, Zdenek.
V předložené práci jsou hodnocena osiva různé provenience (konvenční, certifikované ze systému ekologického zemědělství a farmářské) u vybraných devíti odrůd jarních obilnin (pšenice seté, ječmen setý a pšenice dvouzrnka). Spektrum hodnocení zahrnoval stanovení odrůdové čistoty osiva a vybrané základní chemicko-technologické parametry včetně obsahu makro a mikroprvků. Z výsledků vyplývá, že vliv provenience se projevil u většiny sledovaných vlastností. Ve vzorcích farmářského osiva se vyskytovaly zejména genotypy, které neodpovídaly svým elektroforetickým spektrem žádné v ČR z registrovaných odrůd a byl identifikován i určitý počet heterozygotních zrn. Byl potvrzen trend nárůstu resp. poklesu makroprvků u farmářského osiva pšenice resp. ječmene. V rámci...
Tipo: Conference paper, poster, etc.
Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2013