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| Registros recuperados: 114 | |
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| Bosco, M.; Baruffa, E.; Picard, C.. |
| In order to rapidly achieve crop varieties adapted to organic crop production systems, it is of crucial importance to know plant genotype potential for positive interactions with soil indigenous microflora. In this frame, European research efforts are now considering beneficial non-symbiotic (probiotic) rhizobacteria as an essential factor for sustainable plant breeding. Published findings are beginning to elucidate how probiotic rhizobacteria contribute to plant nutrient assimilation and disease resistance. Future efforts for crop breeding in organic agriculture should take into the right account the capacity of plants to efficiently exploit indigenous probiotic rhizobacteria in low-input cultural conditions. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Soil biology. |
| Ano: 2006 |
URL: http://orgprints.org/8645/1/Bosco_et_al_word.doc |
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| Darsow, Ulrich. |
| Die Resistenzzüchtung bei Kartoffeln gegenüber Phytophthora infestans hat für die Konzeption einer nachhaltigen Landwirtschaft und im Kampf gegen den Hunger weltweit hohe Priorität. Es gibt heute gute Aussichten dafür, durch Resistenzzüchtung etwa 30% des derzeitigen Fungizideinsatzes zu ersetzen. Die Aufnahme der Merkmale relative Kraut- und Braunfäuleresistenz in Programme der Sortenzüchtung erfordert wegen des ungünstigen Erbgangs mehr als eine Verdopplung der Sämlingspopulationen, um geeignete Nachkommen selektieren zu können. Die nötigen Phytophthora-Resistenzprüfungen verlangen hohen Arbeitsaufwand und hohe fachliche Qualifikation. Der züchterische Schwierigkeitsgrad und der zu erbringende, erhebliche zeitliche Vorlauf machen die Bearbeitung dieses... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Root crops. |
| Ano: 2002 |
URL: http://orgprints.org/898/1/T1_02_1339.pdf |
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| Beynon, Jim. |
| This report was presented at the UK Organic Research 2002 Conference. Diseases of plants cause significant losses in crop yield and quality. Plants contain a battery of genes whose role is to prevent pathogens invading. Their effective use in crop plants is very important in crop production and especially in chemical free cropping systems. Such genes are introduced into crop varieties by plant breeding. The new science of genomics may enable scientists to recognise all the resistance genes present in a plant. This will eventually allow plant breeders to more precisely and rapidly select useful resistant plants in their breeding programmes. Furthermore, genomics could enable effective deployment of these genes in cropping systems, so providing more durable... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Research methodology and philosophy Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2002 |
URL: http://orgprints.org/8436/1/beynon_Plant_genomics.pdf |
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| Jansen, Gisela; Kuhlmann, Josy. |
| Besides other legumes lupins belong to the local protein crops usuable as feeding stuff in ecologic farming. Therefore an important breeding aim is to provide lupins with high and stable protein content. A non-destructive analysis using near infrared transmittance spectroscopy was developed for determination of protein in single seeds of lupins. Calibration and validation equations were calculated on the basis of 300 single seeds of 3 blue lupins (‘Azuro’, ‘Bolivio’, ‘Boregine’) growing at 3 ecological locations. The estimation of protein content was possible in a range of 15-44% protein with a coefficient of determination (r²) of 0,907 and a standard error of prediction (SEP) of 1,86%. The equation was applied to evaluate the protein content of single... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Feeding and growth. |
| Ano: 2007 |
URL: http://orgprints.org/9084/1/9084_Jansen_Poster.pdf |
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| Schärer, Hansjakob; Mahlberg, Nicole; Tamm, Lucius; Koller, Martin. |
| To grow carrots in organic quality for storage is often difficult due to seed- and soilborne diseases. In a series of experiments, seed treatments were evaluated to improve seed health, field stand establishment and yield of carrots under field conditions on farmer’s fields within their production system. In standard germination tests in the laboratory, positive effects of the treatments were observable. However, in subsequent field experiments, none of the tested seed treatments improved crop establishment or yield. These results indicate that the quality of organic carrot seeds is generally sufficient and improvements with farm-made seed treatments are difficult to obtain. Further improvement in organic production of carrots may be achieved by... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2009 |
URL: http://orgprints.org/14439/1/Sch%C3%A4rer_14439.pdf |
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| Kristensen, Lars; Borgen, Anders. |
| The disease common bunt (Tilletia tritici syn. T.caries) has become a more frequent problem in Europe during the last 15 year. In organic farming, common bunt causes serious problems for seed producers, and many seed lots are discarded due to contamination with Tilletia tritici. Due to the biology of Tilletia tritici, with spores loosely attached to the surface of the grain, there is a risk that spores can be disseminated via grain handling equipment, including combine harvesters. Preventive efforts should focus on the role of grain handling equipment, and how the fungus life cycle can be broken. We have investigated the dissemination of spores via the combiner after harvesting infected fields. We conducted six trials over three years, counting the number... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Cereals; Pulses and oilseeds. |
| Ano: 2001 |
URL: http://orgprints.org/1124/1/phd_appendiks2.htm |
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| Koller, Martin. |
| Die Wirkung der Saatgutbehandlung mit Milchsäure auf den Alternaria-Blattbefall kurz vor der Ernte war nicht genügend hoch. Die Wirkung lag je nach Satz und Erhebungsdatum zwischen 19 und 58 %, war aber zu keinem Zeitpunkt statistisch gesichert. Der Anteil an Sekundärinfektionen (also nicht durch die ursprüngliche Infektionsquelle) war wahrscheinlich hoch (Morgennebellage, durch Windfang umschlossene Parzelle). Ein zusätzliche Untersuchung an Standorten mit weniger hohem Befallsdruck wäre sinnvoll. Die Keimrate des behandelten Saatgutes war mit 62-70 % zu gering. Durch den lückigen Karottenbestand war der Anteil an übergrossen Karotten hoch. Eine zusätzliche Erhebung der Triebkraft wäre sinnvoll, um allfällige Beschädigung am Saatgut besser feststellen zu... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Vegetables. |
| Ano: 2004 |
URL: http://orgprints.org/2741/1/Koller%2D2004%2DBericht%2DAlternaria%2DKarotten.pdf |
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| Jørnsgård, Bjarne; Kuptsov, Vladislav; Jensen, Birgit; Bødker, Lars; Knudsen, Jens Christian; Nielsen, John. |
| L. angustifolius genotypes susceptible to Fusarium root rot and wilt can be grown in new lupin land without disease symptoms, however, lupin root rot and wilt pathogens build up during repeated cropping of susceptible lupins in the same field. After four lupin crops symptoms of root rot and wilt began in an inhomogeneous pattern over the field, and after another three lupin crops susceptible lupins are destroyed before flowering homogeneously over the field and caused total crop failure. The dominating pathogens isolated from diseased lupins with root rot and wilt symptoms in this field are in descending order F. oxisporum, F. solani, F. culmorum, and F. avenaceum, the latter only being isolated from young autumn sown plants. A core collection of lupin... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2007 |
URL: http://orgprints.org/10996/1/10996.pdf |
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| Pinnschmidt, Hans O.; Sindberg, Susanne A.; Willas, Jakob. |
| Ramularia leaf spot (RLS) is widely present in Denmark nowadays and has the potential to reach severity levels high enough to cause economic damage. The results of multi-location surveys and field trials of several years suggest that varietal resistance can be an efficient means for controlling RLS. The spring barley cultivars most affected by RLS possess mlo-resistance against powdery mildew while the least affected ones do not. Other mildew resistances as well as varietal susceptibility to other foliar diseases were not clearly related to the RLS reaction pattern of neither spring- nor winter barley cultivars. Promising RLS resistance donors may be the spring barleys Power, Helium, Isabella, Nathalie, Cruiser and Isotta and the winter barleys Lonni,... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/10244/1/10244.pdf |
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| Nielsen, B.J.. |
| Danish wheat varieties are tested on a set of different Tilletia populations for their level of resistance. Resistance to bunt is studied by inoculating seeds artificially with different populations of bunt before sowing. 5 g of spores per kg of seeds is used, and the ”isolates” used are selected among the 50-60 different populations of bunt collected from different parts of the country. 2-3 different populations are used for inoculation the first year, and varieties showing good resistance are tested further in the following years on 3-6 new populations. The susceptible variety Herzog (up to 86% attack) and the highly resistant variety Stava (normally 0-0.2% attack) are included every year as reference. In July the number of ears with attacks of bunt is... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2003 |
URL: http://orgprints.org/7974/1/7974.pdf |
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| Nielsen, B.J.. |
| Danish wheat varieties are tested on a set of different Tilletia populations for their level of resistance. Resistance to bunt is studied by inoculating seeds artificially with different populations of bunt before sowing. 5 g of spores per kg of seeds is used, and the ”isolates” used are selected among the 50-60 different populations of bunt collected from different parts of the country. 2-3 different populations are used for inoculation the first year, and varieties showing good resistance are tested further in the following years on 3-6 new populations. The susceptible variety Herzog (up to 86% attack) and the highly resistant variety Stava (normally 0-0.2% attack) are included every year as reference. In July the number of ears with attacks of bunt is... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2004 |
URL: http://orgprints.org/7975/1/Sortsfors%C3%B8g_2004.pdf |
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| Nielsen, B.J.. |
| Danish wheat varieties are tested on a set of different Tilletia populations for their level of resistance. Resistance to bunt is studied by inoculating seeds artificially with different populations of bunt before sowing. 5 g of spores per kg of seeds is used, and the ”isolates” used are selected among the 50-60 different populations of bunt collected from different parts of the country. 2-3 different populations are used for inoculation the first year, and varieties showing good resistance are tested further in the following years on 3-6 new populations. The susceptible variety Herzog (up to 86% attack) and the highly resistant variety Stava (normally 0-0.2% attack) are included every year as reference. In July the number of ears with attacks of bunt is... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2005 |
URL: http://orgprints.org/7978/1/7978.pdf |
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| Nielsen, B.J.. |
| Danish wheat varieties are tested on a set of different Tilletia populations for their level of resistance. Resistance to bunt is studied by inoculating seeds artificially with different populations of bunt before sowing. 5 g of spores per kg of seeds is used, and the ”isolates” used are selected among the 50-60 different populations of bunt collected from different parts of the country. 2-3 different populations are used for inoculation the first year, and varieties showing good resistance are tested further in the following years on 3-6 new populations. The susceptible variety Herzog (up to 86% attack) and the highly resistant variety Stava (normally 0-0.2% attack) are included every year as reference. In July the number of ears with attacks of bunt is... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2002 |
URL: http://orgprints.org/7969/1/7969.pdf |
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| Registros recuperados: 114 | |
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