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| Registros recuperados: 97 | |
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| Steffan, Philipp; Borgen, Anders; Lazzaro, Mariaterresa; Backes, Gunter; Rasmussen, Søren Kjærgaard. |
| Utilising diverse populations instead of single line varieties is expected to lead to a number of advantages in cereal production. These include reduced epidemics of plant diseases, improved weed competition and better exploitation of soil nutrients, resulting in improved yield stability. However, a number of challenges must be met before diverse wheat populations can be introduced into commercial wheat production: one of these is the development of breeding technologies based on mass selection which enable breeders and farmers to improve specific traits in populations and maintain diversity at the same time. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/22183/7/22183.pdf |
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| Liu, Q; Borgen, Anders; Trust, Beta. |
| The phytochemicals including flavonoids and phenolic acids mainly contained in the outer layer of the kernels are key factors responsible for the biofunctionality of whole grains. The phytochemical profiles of twelve grain samples comprising 6 wheats, 3 barleys and 3 oats were studied for comparative evaluation of their antioxidant properties. Total phenolic content (TPC) and antioxidant activities (DPPH and ORAC) of the grain extracts were measured. The bound phenolic acids were identified and quantified using HPLC and mass spectrometry. The flavonoids in different grain were analyzed using HPLC and tandem mass spectrometric techniques. TPC in acidified methanol extracts ranged from 164 to 226, 264-391, and 308-331 mg/100 g for wheat, oats and barley,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Cereals; Pulses and oilseeds Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/22150/7/22150.pdf |
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| Borgen, Anders. |
| The impact of seed borne diseases on organic cereal production in North-Western Europe is discussed as well as the potential of the possible control measures. It is concluded that it is essential for the organic seed production to put more focus on the control the seed borne diseases. Possible control measures exist, but only a few are used at present. Small seeds are statistically more infected by a number of seed borne diseases than larger seeds. Removal of these seeds by size and gravity separation could be used more frequently. Varieties resistant to the most significant seed borne diseases are available, and improved heat treatment techniques are being developed and are likely to be available for practice in the coming years. Some organic certifying... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2004 |
URL: http://orgprints.org/3191/1/NB127.pdf |
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| Borgen, Anders. |
| Common bunt is infecting wheat seedling just after sowing, in the heterotrophic phase before seedling emergence. The seed per se is healthy at the time of sowing, but gets infected from spores resting on the seed surface. Bechel et al. 1998 has shown that only a minor fraction of the spores of the the closely related bunt species T.contraversa in a seed lot end up in the flour, while the majority are removed during the cleaning of the seed before or during milling. However, little is known about the destiny of the spores during the cleaning process of seed intented for sowing. Seed lots contaminated with bunt spores during threshing was cleaned in a brush cleaner (ø=400mm) (http://www.westrup.com/HAsideeng.htm) with and without precleaning. Airstream... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2005 |
URL: http://orgprints.org/4907/1/4907.pdf |
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| Borgen, Anders. |
| Common bunt caused by the fungus Tilletia tritici (syn. T.caries) is one of the most devastating plant diseases in wheat. In conventional agriculture the disease is controlled exclusively by fungicide seed treatment, but in organic farming these fungicides are not accepted. Previous studies in India have shown that seed treatment with plant extracts of Canabis sativa, Eucalyptus globulus, Thuja sinensis and Datura stramonium was fully effective against the disease under field conditions. Later, in vitro studies have shown that also germination of spores of the Karnal bunt pathogen (Neovossia indica) could be prevented by these plant extracts. The experiment was repeated in Denmark with extracts from the same species grown in Denmark, which has climate... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2004 |
URL: http://orgprints.org/3188/1/ISTA_abstract_2004.pdf |
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| Borgen, Anders. |
| All over the world, Thule III is used as differential variety for the resistance gene Bt-13 against common bunt. It can therefore be strange that I can question whether Thule III have Bt-13, so let me elaborate the question. I also use Thule III as a standard for Bt-13, and I got this variety from GRIN PI 181463. This variety does indeed have a major gene against common bunt and since we all use it as a standard for Bt-13 this gene is per definition Bt-13. What still puzzles me is that this variety does not look like Thule III. It says in the GRIN database that it is of Swedish origin with the pedigree Thule II/Sammet. PI 181463 is a short, lodging and weak variety with a very poor winter hardiness, and it does not at all look like a Swedish winter wheat.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2014 |
URL: http://orgprints.org/28140/7/28140.pdf |
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| Borgen, Anders. |
| I afhandlingen beskrives principperne for økologisk plantebeskyttelse og der argumenteres for, at en plantesygdom som stinkbrand primært bør forebygges frem for at blive bekæmpet i et økologisk dyrkningssystem. Stinkbrandens biologi analyseres med henblik på at finde mulige forebyggende dyrkningsmetoder. Endvidere undersøges mulige bekæmpelsesmetoder, som er tilpasset økologisk jordbrug. Det konkluderes, at der findes forebyggende metoder, og at det er sandsynligt, at en systematisk udnyttelse af disse vil kunne forhindre hovedparten af problemerne med sygdommen. Det konkluderes endvidere, at der er muligheder for bekæmpelse i økologisk jordbrug, som kan bruges som sikkerhedsnet under dyrkningssystemet. I afhandlingen gengives 6 eksperimentelle... |
| Tipo: Thesis |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Cereals; Pulses and oilseeds. |
| Ano: 2000 |
URL: http://orgprints.org/263/1/Ph.D.%2Dafhandling.pdf |
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| Borgen, Anders. |
| In Denmark, most organic farmers uses organic propagated cereals and legumes for seeding, and all seed lots are tested for infections of seed borne pathogens before sowing. About 50% of all see lots are discarded based on this assessment, but huge differences occur between year and crop, which makes planning of seed production impossible. Some years up to 90% of the seed lots of a crop may be discarded e.g. peas in year 2000. The major cause of this are: Tilletia tritici in wheat, Dreschlera graminea, D. teres and Ustilago nuda in barley, Fusarium spp in triticale, and Ascochyta spp in peas. This situation calls for research focusing on this specific problem in the organic plant production. Research in organic seed production, handling and use... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems Crop husbandry Cereals; Pulses and oilseeds. |
| Ano: 2002 |
URL: http://orgprints.org/1032/1/ISTA_conference.htm |
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| Borgen, Anders. |
| Meldrøjer ses i rug som sorte kornlignende legemer på størrelse med kernerne. I virkeligheden er der tale om giftige sklerotierne af svampen Claviceps purpurea, som bestemt ikke hører hjemme i korn, hverken til foder eller menneskeføde. Forekomst i økologisk korn Meldrøjer er den eneste udsædsbårne svampesygdom på korn, som ikke har kunnet bekæmpes kemisk, heller ikke i konventionelt jordbrug. Rensning af såsæden har derfor altid været den primære foranstaltning til regulering af denne sygdom, så behandlingen adskiller sig ikke i økologisk og konventionelt jordbrug. De enkelte sklerotier kan have samme længde og bredde som rugkernerne. Derfor kan de ikke alle renses fra på et sold. Der er en lille forskel i vægtfylde og overfladestruktur mellem... |
| Tipo: Journal paper |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2005 |
URL: http://orgprints.org/7939/1/7939.pdf |
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| Borgen, Anders; Kristensen, Lars. |
| Common bunt (Tilletia tritici) infects the wheat plant during germination of the seed. For experiments with common bunt it is conventional to examine symptoms of infection in the head of the plant. Previous research has advocated the possibility of scoring chlorosis on the leaf instead of head symptoms in order to reduce the duration of the experiment. By comparing the two diagnosis methods in climate chambers, the current experiment demonstrated that the sensitivity and specificity of the two methods depends on the wheat variety used. Using leaf symptoms as a diagnosis for infection has considerable disadvantages when used for screening for resistance in breeding programs, but have advantages e.g. when investigating effects of seed treatments. |
| Tipo: Journal paper |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2003 |
URL: http://orgprints.org/3192/1/Macroscopic_leaf_symptoms_in_wheat_infected_by_Tilletia_tritici.htm |
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| Registros recuperados: 97 | |
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