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| Registros recuperados: 808 | |
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| Timmermann, Martin; Inhetveen, Heide; Becker, Heiko. |
| Ausgangspunkt war die Frage, welche Bedeutung Erfahrungswissen im Rahmen der professionellen Pflanzenzüchtung hat und wie dieses Erfahrungswissen im Kontext der Züchtungspraxis zu verstehen ist. Dafür wurden fünf Getreidezüchter interviewt und die Züchtungspraxis in einem Zuchtgarten über eine Vegetationsperiode hin durch teilnehmende Beobachtung erfasst. Es wurden die verschiedenen Situationen der Wissensherkünfte erfasst, fünf Wissenskategorien entwickelt und in einer Entscheidungsmatrix reintegriert. Verbindendes Element der Kategorien ist die vernetzte Struktur der Geschichten, die in ihrer Komplexität als Erfahrungswissen bezeichnet werden kann. An Hand der Entscheidungsmatrix konnten die verschiedenen Entscheidungssituationen - Selektion in früher... |
| Tipo: Project description |
Palavras-chave: Knowledge management Breeding; Genetics and propagation. |
| Ano: 2006 |
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| Haug, Benedikt; Messmer, Monika; Forst, Emma; Mary-Huard, Tristan; Enjalbert, Jérôme; Goldringer, Isabelle; Hohmann, Pierre. |
| Introduction Mixed cropping, i.e. mixing different crops in the same field, provides agronomic advantages as increased productivity under low inputs conditions (e.g. for organic farming: Bedoussac et al. 2015) and higher yield stability (Raseduzzaman and Jensen 2017). In mixed cropping, choosing the right cultivars is critical for the performance of the mixture, as shown for pea-barley mixtures (Hauggaard-Nielsen and Jensen 2001) and maize-bean mixtures (Hoppe 2016). As performance in pure stand can strongly diverge from performance in mixture, estimating the ability of a cultivar to be mixed with another crop is therefore of utmost importance. For this purpose, concepts of General and Specific Combining Ability in hybrid breeding (Griffing 1956) have... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2019 |
URL: http://orgprints.org/36778/1/haug-etal-2019-book-of-abstracts-eccd-p242-243.pdf |
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| Ghaouti, Linmiae; Vogt-Kaute, Werner; Link, Wolfgang. |
| Organic farming requires cultivars that are specifically adapted to this low input cropping system. Hence, organic farmers and scientists joined in a participatory breeding approach to develop region-specific genotypes of spring faba bean for organic conditions in Germany. A set of 49 genotypes with contrasting degrees of heterozygosity and heterogeneity was used in field trials across five locations in Germany during 3 years 2004, 2005 and 2006. The material involved 18 inbred lines, their 18 polycross progenies, one blend of inbred lines, one blend of polycross progenies, one blend of hybrids and ten checks. Inbred lines are uniform, thus giving the option to be specifically adapted; whereas the polycross progenies and synthetics (Syn-1; predicted from... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2008 |
URL: http://orgprints.org/15259/1/Ghaouti%2Detal%2D2008%2DEuphytica_paper.pdf |
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| Rudolphi, S.; von Witzke-Ehbrecht, S.; Becker, H.C.. |
| The oil of safflower (Carthamus tinctorius L.) is a valuable oil for human nutrition. It contains a high amount of unsaturated fatty acids, in particular linoleic acid (up to 90 %). There is a great demand for ecologically produced oil in Germany, though oil crops are cultivated on 2 % of the ecological acreage. In Germany, hardly any variety test exists, moreover there has been no breeding efforts so far, although genetic variation in safflower is large. The aim of this study was the development of a rapid and non-destructive method to determine oil content in safflower seed using NIRS (Near-Infrared Reflectance Spectroscopy). A total of 203 seed samples were scanned with NIRS to estimate the oil content. Intact seeds as well as milled seeds were... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/15204/1/rudolphi%2Deta%2D2006%2Dfinal_manuscript%2D6th_safflower_conference_2005.pdf |
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| Wolfe, M.S.; Baresel, J.P.; Desclaux, D.; Goldringer, I.; Hoad, S.; Kovacs, G.; Löschenberger, F.; Miedaner, T.; Østergard, H.; Lammerts van Bueren, E.T.. |
| The need for increased sustainability of performance in cereal varieties, particularly in organic agriculture (OA), is limited by the lack of varieties adapted to organic conditions. Here, the needs for breeding are reviewed in the context of three major marketing types, global, regional, local, in European OA. Currently, the effort is determined, partly, by the outcomes from trials that compare varieties under OA and CA (conventional agriculture) conditions. The differences are sufficiently large and important to warrant an increase in appropriate breeding. The wide range of environments within OA and between years, underlines the need to try to select for specific adaptation in target environments. The difficulty of doing so can be helped by... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Breeding; Genetics and propagation. |
| Ano: 2008 |
URL: http://orgprints.org/15284/1/wolfe%2Detal%2D2008%2DEUPH%2DOrganic_breeding%2Dp323%2D346.pdf |
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| Ziel des Forschungsvorhabens ist es, die im Handel erhältliche Sommergerste-Sorten auf ihrer Anfälligkeit gegenüber der saatgutübertragbaren Streifenkrankheit zu untersuchen. 55 Sommergerstensorten und fünf genetische Ressourcen mit Streifenkrankheitsresistenzen werden bei Darzau/Ost-Niedersachsen über zwei Jahre und auf dem Dottenfelderhof/Wetterau ein Jahr lang einem natürlichen Befall ausgesetzt. Parallel dazu wird eine hoch befallenen Sorte angebaut. Im Folgejahr wird der Befall im Nachbau der Sorten auf beiden Standorten geprüft. Aus dem Ergebnis können Sortenempfehlungen für eine kontinuierliche Vermehrung unter ökologischen Anbaubedingungen abgeleitet und Schätzungen für eine maximal zu erwartende Ertragsminderung im Falle des Auftretens der... |
| Tipo: Project description |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2023 |
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| Hahn, Volker. |
| Die Sonnenblume ist die wichtigste ölliefernde Pflanze im Öko-Landbau. Da ihre Samen neben einem hohen Fettgehalt auch einen beachtlichen Anteil an Eiweiß enthalten, sollten in diesem Projekt grundlegende Fragen beantwortet werden, damit die praktische Pflanzenzüchtung Strategien entwickeln kann, um Sonnenblumen mit einem erhöhten Proteinertrag züchten zu können. Aus 235 untersuchten Sonnenblumenlinien wurden 23 Linien mit unterschiedlichen Proteingehalten gewählt, die als Kreuzungseltern von 105 Testhybriden dienten. Die Testhybriden und die Elternlinien wurden in 2 Jahren an insgesamt 5 Umwelten in Leistungsprüfungen auf anerkannt ökologischen Flächen auf ihre Ertrags- und Qualitätsmerkmale geprüft. Zur Ermittlung des Proteingehaltes wurde die... |
| Tipo: Report |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/14974/1/14974%2D03OE599%2Duni%2Dhohenheim%2DLSA%2Dhahn%2D2006%2Dsonnenblumen.pdf |
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| Hahn, Volker. |
| Die Sonnenblume ist die wichtigste ölliefernde Pflanze im Öko-Landbau. Da ihre Samen neben einem hohen Fettgehalt auch einen beachtlichen Anteil an Eiweiß enthalten, sollten in diesem Projekt grundlegende Fragen beantwortet werden, damit die praktische Pflanzenzüchtung Strategien entwickeln kann, um Sonnenblumen mit einem erhöhten Proteinertrag züchten zu können. Aus 235 untersuchten Sonnenblumenlinien wurden 23 Linien mit unterschiedlichen Proteingehalten gewählt, die als Kreuzungseltern von 105 Testhybriden dienten. Die Testhybriden und die Elternlinien wurden in 2 Jahren an insgesamt 5 Umwelten in Leistungsprüfungen auf anerkannt ökologischen Flächen auf ihre Ertrags- und Qualitätsmerkmale geprüft. Zur Ermittlung des Proteingehaltes wurde die... |
| Tipo: Project description |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2006 |
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| Timmermans, B.G.H; Osman, A.M.. |
| Infection of wheat seeds with Fusarium spp. causes seedling blight. As a result of this disease, fields sown with infected seeds show a reduced plant density. This is especially a problem in organic agriculture, for which currently no practical seed disinfection methods are available. In the present project we investigated whether spring wheat cultivars differ in sensitivity to seedling blight, whether the possible differences could be linked to cultivar differences in early growth rates, and what size the delay in canopy closure resulting from the plant reductions was. Six spring wheat cultivars (Melon, Lavett, SW Kungsjet, Epos, Pasteur, Thasos), containing three infection levels (averages 5, 15 and 27%) of Fusarium culmorum were obtained and were sown... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2007 |
URL: http://orgprints.org/9751/1/timmermans%2Dosman%2D2007%2Dspring%2Dwheat.pdf |
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| Timmermans, Dr. B.G.H.; Osman, Ir. A.M.. |
| Fusarium spp. present on spring wheat seeds can infect seedlings and cause reduced plant densities and higher wheat infestations. In the current project, variation between commercially available spring wheat cultivars in their tolerance to Fusarium seedling blight was investigated in a pot and a field trail. Additionally, initial growth rates of cultivars were measured to investigate possible relations with tolerance. Preliminary analysis shows presence of tolerance differences between the spring wheat cultivars in the pot and field experiment. This difference was relatively robust (experiment x cultivar interaction was not significant). Preliminary analysis also showed a relation between tolerance and initial growth rates of cultivars in the field... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2008 |
URL: http://orgprints.org/11945/1/seedlingblightsofar2008aobt.doc |
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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; 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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| Registros recuperados: 808 | |
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