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| Registros recuperados: 31 | |
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| 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 |
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| 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 |
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| Konvalina, Petr; Moudry, Jan; Suchý, Karel; Capouchova, Ivana; Janovska, Dagmar. |
| Strong drought tolerance is an important objective in breeding new wheat varieties. We compared the drought tolerance of land races and modern varieties of various spring wheat forms. 13C discrimination (CID) indicated how significantly the tested wheat varieties were inclined to drought tolerance. CID is a trait related to stomatal closure and consequently an important component of the tolerance to drought. Samples were grown in České Budĕjovice (CZ), from 2009 to 2012. Twenty-three varieties, comprising einkorn, emmer, spelt, land races and control variety of bread wheat were grown and tested. Results have shown some varieties achieved low CID values (which meant they were more inclined to the drought tolerance). There were emmer and spelt varieties... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation Environmental aspects. |
| Ano: 2014 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Konvalina, Petr; Capouchova, Ivana; Moudry, Jan (Jr.); Zdrhova, I.; Sramek, Jan; Moudry, Jan; Sterba, Z.. |
| Organic methods growing bread wheat may have negative effects on the technological value, especially in the case of the crucial crude protein content. The aim of paper is to identify diferences in quality of 8 varieties recomended in conventional or organic conditions in Austria and 2 strains. Obvious effect of year on the quality, set up in statistics, was confirmed for qualitative parametres. The correlation analysis also provides similar figures. Effect of the year in a negative correlation to crude protein content (r=-0,66), whereas in a positive correlation to starch content (r=0,78) and falling number (r=0,86). Effect of the variety is represented by unclear correlation coefficients. Correlation analysis of selected qualitative parametrs of wheat... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry Breeding; Genetics and propagation. |
| Ano: 2008 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| pazderů, kateřina; vepříková, zdeňka; Vaclavikova, Marta; Capouchova, Ivana; Hajslova, Jana; Konvalina, Petr; Prokinová, Evženie; Janovska, Dagmar; Honsova, Hana. |
| Předložená metodika slouží k objektivnímu posouzení celkové mykotoxinové kontaminace obilovin pro potravinářské využití. Vlastní klíčící test spočívá v přípravě vzorků a uvolnění vázaných forem mykotoxinů v zrnu. Druhou částí je stanovení DON, D3G, 3‐/15‐ ADON v připraveném vzorku naklíčeného zrna pomocí vysokoúčinné kapalinové chromatografie ve spojení s vysokorozlišovací hmotnostní detekcí (U‐HPLC‐HRMS). Obě části metodiky tvoří jeden celek, lze je ale využít i samostatně pro stanovení ve dvou následných krocích v různých laboratořích. |
| Tipo: Book |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/25592/1/Certifkovan%C3%A1%20metodika%20s%20ob%C3%A1lkou%20k%20tisku.pdf |
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| 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 |
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| Registros recuperados: 31 | |
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