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| Registros recuperados: 31 | |
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| 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 |
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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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| 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 |
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| 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 |
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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; 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 |
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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; 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. |
| 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; 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. |
| 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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| 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; Capouchova, Ivana; Janovska, Dagmar. |
| Organic farming has been developing worldwide over the last few decades. However, the crucial problem has not been resolved yet – a lack of suitable varieties. It is a serious factor limiting this development. Breeding is a very demanding and expensive process; special varieties are not bred for the organic farming from many crops then. A concept called "participatory plant breeding“ (PPB) is a possibility for resolving this problem. It is based on a direct involvement and participation of a farmer in the breeding process. Undemanding and cheap breeding methods are chosen there – they do not require any special education or equipment from the farmers involved. Training and professional surveillance are sufficient there. One of PPB methods has been already... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2018 |
URL: http://orgprints.org/33227/3/50%20Petr%20Konvalina%20Article.pdf |
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| 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 |
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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. |
| 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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| 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 |
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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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| Registros recuperados: 31 | |
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