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| Registros recuperados: 18 | |
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| Weedon, Odette; Brumlop, Sarah; Heinrich, Sven; Boening, Andreas; Elsner, Maren; Finckh, Maria R.; Lammerts van Bueren, E.T.; Nuijten, E.; Messmer, Monika; Baresel, Jörg Peter; Goldringer, I.; Péter, Mikó; Megyeri, Maria; Borgen, Anders; Rasmussen, Søren K.; Pearce, Bruce; Wolfe, Martin. |
| As environmental and agronomic conditions are heterogeneous between and within locations, diversity within varieties or crop populations should increase adaptability to the changing and variable range of growing environments. The additional pressure of plant genetic diversity loss, has driven novel breeding approaches such as Composite Cross Populations (CCPs) and other genotype mixtures, thereby increasing both intra- and inter-varietal diversity and ensuring a “wider adaptation” capacity for crop varieties (Döring et al., 2011). A winter wheat (Triticum aestivum L.) CCP was created by intercrossing 20 varieties in 2001, through collaboration with the Elm Farm Research Centre and the John Innes Institute. In 2005, a seed batch of the F4 was equally... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Biodiversity and ecosystem services Breeding; Genetics and propagation. |
| Ano: 2016 |
URL: http://orgprints.org/30323/1/Weedon%20et%20al..pdf |
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| Weedon, Odette; Lanvers, J.; Wersebeckmann, V.; Purwien, T.; Heinrich, Sven; Finckh, Maria R.. |
| Evolutionary breeding through the introduction of composite cross populations (CCPs)encourages intra-specific diversity and increases diversity in the agricultural landscape. Increased genetic diversity in crops may help to buffer both biotic and abiotic stresses and will play an increasingly important role in unpredictable climatic conditions become more unpredictable (Østergård et al. 2009). A number of CC winter wheat populations, commercial varieties and CCP line selections were tested at the University of Kassel, under differing N input levels in order to test past adaptation and suitability to differing fertilisation levels. The CCPs have been managed since 2005 under both organic and conventional conditions without conscious selection. Genetically... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Composting and manuring Breeding; Genetics and propagation. |
| Ano: 2017 |
URL: http://orgprints.org/31615/1/Anpassung%20und%20Eignung%20von%20Composite%20Cross%20Winterweizen-.pdf |
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| Baresel, Jörg Peter; Backes, Gunter; Bülow, L.; Finckh, Maria R.; Frese, L.; Knapp, Samuel; Möller, Detlev; Reents, Hans Jürgen; Siegmeier, Torsten; Simon, R.; Weedon, Odette. |
| Increasing yield instability due to climate change could be mitigated by higher interand intra crop diversity. During the course of the INSUSFAR project, several questions regarding the impact of more diverse crops on agricultural systems are adressed. To answer these questions, varieties, mixtures, and composite cross populations of wheat will be investigated in field experiments and on-farm. Based on the results, the socio-economic, ecological and yield performance of these varieties and the extent of genetic changes in genetically diverse populations will be tested. In addition, effects of plant breeding on the adaption of varieties to different input levels will be analysed. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2017 |
URL: http://orgprints.org/31618/1/Innovative%20Approaches%20to%20Optimize%20Genetic%20Diversity%20for.pdf |
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| Weedon, Odette; Lanvers, J.; Wersebeckmann, V.; Purwien, T.; Heinrich, S.; Finckh, Maria R.. |
| Unpredictable climatic conditions and increasing pressure on non-renewable resources mean that alternative agricultural systems able to cope with increasing biotic and abiotic stresses, as well as external input costs, are needed. Sustainable agricultural systems should be self-regulating, characterized by a high degree of interand intra-specific diversity (Moreau 2010). Evolutionary breeding through the introduction of Composite Cross Populations (CCPs) increases intra-specific diversity, enabling CCPs to adapt to changing environmental conditions. Increasing interspecific diversity, through mixed cropping, also plays an important role in sustainable systems and suitable crops are needed that are able to cope with the increasing interspecific competition... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2017 |
URL: http://orgprints.org/31619/1/Leistung%20und%20agronomisches%20Potenzial%20von%20Composite.pdf |
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| Weedon, Odette; Haak, Jette; Heinrich, Sven; Finckh, Maria R.. |
| Alternative breeding approaches in organic agriculture have started to address pressing issues such as the lack of appropriate plant varieties particularly suited to cope with higher biotic and abiotic stresses, generally found in low-input and organic production systems. This challenge, coupled with the additional pressure of loss of plant genetic diversity, has driven novel breeding approaches such as Composite Cross Populations (CCPs) and other genotype mixtures, thereby increasing both intra- and inter-varietal diversity. This High genetic Diversity (Hi-D) approach is relevant to organic agricultural systems for two reasons; firstly the availability of diverse germplasm improves chances of finding germplasm suited for low-input conditions as found in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Biodiversity and ecosystem services Breeding; Genetics and propagation. |
| Ano: 2015 |
URL: http://orgprints.org/30320/1/AbstractWeedonetal.pdf |
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| Siegmeier, Torsten; Kluth, Jacob; Weedon, Odette; Finckh, Maria R.; Möller, Detlev. |
| Diversität im Anbausystem wird vielfach als Schüssel für stabile Erträge und ein resilientes Produktionssystem gesehen. Die evolutionäre Pflanzenzüchtung und der Anbau von genetisch stark heterogenen Composite Cross Populationen (CCP) sind ein Ansatz die Diversität zu steigern mit dem Ziel stabilere Erträge zu erwirtschaften. Ein Trade-off besteht allerdings zwischen einem kurzfristig hohen Ertragspotenzial bei Liniensorten und potentiell langfristiger Ertragsstabilität von CCP – auch unter Extrembedingungen. Mit einer Leistungs-Kostenrechnung und einem stochastischen Ansatz (Monte Carlo Simulation) werden in dieser Studie die Leistung und das Produktionsrisiko von CCP mit herkömmlichen Liniensorten verglichen. Die CCP zeigten eine relativ geringe Streuung... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Farm economics. |
| Ano: 2019 |
URL: http://orgprints.org/36250/1/Beitrag_327_final_a.pdf |
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| Weedon, Odette; Haak, Jette; Brumlop, Sarah; Heinrich, Sven; Finckh, Maria R.. |
| A lack of appropriate crop varieties specifically bred for the higher biotic and abiotic stresses experienced in organic and low-input systems, has driven novel breeding approaches such as Composite Cross Populations (CCPs) and other genotype mixtures, thereby increasing both intra- and inter-varietal diversity. The creation of CCPs using carefully chosen parental varieties, coupled with the ability of the populations to adapt to local environments means that these populations are well suited for low-input and organic agricultural systems (Phillips and Wolfe, 2005). COBRA (Coordinating Organic plant BReeding Activities for Diversity) aims to “support and develop plant breeding and seed production in Europe by increasing the use of plant material with High... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems Cereals; Pulses and oilseeds Biodiversity and ecosystem services Breeding; Genetics and propagation. |
| Ano: 2015 |
URL: http://orgprints.org/30322/1/COBRA_Abstract_Weedon_et_al..pdf |
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| Weedon, Odette; Haak, Jette; Brumlop, Sarah; Finckh, Maria R.; Heinrich, Sven. |
| Thirteen winter wheat composite cross populations originating from one population but with differing histories over six years and three reference varieties were compared for yield, disease occurrence, as well as phenotypic diversity. The populations performed similarly and often better than the reference varieties in terms of yield and had lower incidence of disease. The populations are also phenotypically diverse and differ among each other, indicating that they have maintained a high degree of diversity over time and in varying locations, but most likely also diverged from each other. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2015 |
URL: http://orgprints.org/26934/1/26934_weedon.pdf |
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| Weedon, Odette; Haak, Jette; Brumlop, Sarah; Finckh, Maria R.; Heinrich, Sven. |
| Thirteen winter wheat composite cross populations originating from one population but with differing histories over six years and three reference varieties were compared for yield, disease occurrence, as well as phenotypic diversity. The populations performed similarly and often better than the reference varieties in terms of yield and had lower incidence of disease. The populations are also phenotypically diverse and differ among each other, indicating that they have maintained a high degree of diversity over time and in varying locations, but most likely also diverged from each other. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2015 |
URL: http://orgprints.org/30328/1/26934_weedon.pdf |
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| Döring, Thomas F.; Weedon, Odette; Brumlop, Sarah; Wolfe, Martin; Finckh, Maria R.. |
| Three Composite Cross Populations (CCPs) of winter wheat were created in 2001, one from crossing high baking quality parents (called QCCP), one based on high yielding parents (YCCP), and one created from both parent sets combined (YQ). All three CCPs were grown for several years in the UK and in Germany under conventional and organic cropping management. Based on properties of the different parent sets, yields were predicted to be highest in the YCCP and lowest in the QCCP, with the YQCCP in between. However, data showed that the YCCP was not significantly higher-yielding than the more generalist YQCCP in five out of six sites; in fact, the YQCCP even tended to outyield the YCCP on average over all sites, and this effect was significant at the German... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2015 |
URL: http://orgprints.org/26982/1/26982_doering.pdf |
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| Weedon, Odette; Schmidt, Jan-Henrik; Finckh, Maria Renate; Siegmeier, Torsten; Vollenweider, Carl; Spiess, Hartmut; Berlich, Verena; Burwitz, Lea; Timaeus, Johannes. |
| Heterogeneous crop populations such as composite cross populations (CCPs) have recently been gaining attention, both in the scientific community and with practitioners, particularly for use within organic and low-input agricultural systems. Genetically diverse populations are capable of reacting to unpredictable environmental conditions and of adapting to specific environmental conditions such as future farming systems focussed on reducing external inputs and optimising ecosystem services. Despite the growing interest and legislative support, widespread adoption and acceptance of CCPs throughout the value chain has been slow. The aim of the workshop is to allow participants to explore and identify possible internal and external opportunities and threats... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Produce chain management Breeding; Genetics and propagation Biodiversity and ecosystem services. |
| Ano: 2019 |
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| Burwitz, Lea; Siegmeier, Torsten; Weedon, Odette; Finckh, Maria R.; Möller, Detlev. |
| Genetisch diverse Composite Cross Populationen (CCP) können helfen, Anbausysteme an sich verändernde Bedingungen anzupassen und biotische/abiotische Stressfaktoren zu puffern. Vor allem der Ökolandbau könnte von heterogenen Populationen und deren Anpassungsfähigkeit profitieren. Zurzeit kann auf Basis einer EU-Richtlinie Populationssaatgut z.B. von Weizen in den Verkehr gebracht werden. Aktuelle Änderungen der EU-Vorschriften sollen den Vertrieb von Populationen ab 2021 zumindest im Ökosektor ermöglichen. Es bleibt die Frage, ob und wie Populationen in der Praxis angenommen werden. Diese Studie untersucht mithilfe qualitativer Methoden die Stärken, Schwächen, Chancen und Risiken von Winterweizenpopulationen aus Sicht der Akteure entlang der ökologischen... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Farm economics Markets and trade Produce chain management. |
| Ano: 2019 |
URL: http://orgprints.org/36247/1/Beitrag_323_final_a.pdf |
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| Siegmeier, Torsten; Kluth, Jacob; Weedon, Odette; Finckh, Maria R.; Möller, Detlev. |
| Diversität im Anbausystem wird vielfach als Schüssel für stabile Erträge und ein resilientes Produktionssystem gesehen. Die evolutionäre Pflanzenzüchtung und der Anbau von genetisch heterogenen Composite Cross-Populationen (CCP) sind ein Ansatz die Diversität zu steigern mit dem Ziel stabilere Erträge zu erwirtschaften. Hierbei besteht ein Trade-off zwischen einem kurzfristig hohen Ertragspotenzial bei Liniensorten und potentiell langfristiger Ertragsstabilität von CCP – auch unter Extrembedingungen. Mit einer Leistungs-Kostenrechnung und stochastischer Simulation werden in diesem Beitrag die Wirtschaftlichkeit und das Produktionsrisiko von CCP mit herkömmlichen Liniensorten verglichen. Die Einzelkostenfreie Leistung (€/ha) der CCP liegt etwa auf dem... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Farm economics. |
| Ano: 2019 |
URL: http://orgprints.org/36249/1/Beitrag_325_final_a.pdf |
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| Weedon, Odette; Brumlop, Sarah; Heinrich, Sven; Finckh, Maria R.. |
| Increasingly uncertain climatic conditions threaten the security and stability of agricultural systems (Østergård et al., 2009; Döring et al., 2011) and a better understanding of genotype x environment (GxE) interactions is needed to shift the agricultural focus from manipulating environments to grow crops to creating crops that fit into the environment (Østergård et al., 2009; Lammerts van Bueren et al., 2012). GxE interactions play a pivotal role in assessing yield stability of crops and the challenge of changing climatic conditions necessitates that new crop cultivars should have broad adaptability, stable agronomic performance over a range of environments and management systems and generally high yields (Akcura et al., 2006). The High genetic Diversity... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Biodiversity and ecosystem services Breeding; Genetics and propagation. |
| Ano: 2016 |
URL: http://orgprints.org/33021/1/Weedon%20et%20al.2016_EUCARPIA.pdf |
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| Registros recuperados: 18 | |
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