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| Registros recuperados: 808 | |
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| La production de plants fruitiers en agriculture biologique est un verrou technique autant qu’économique, qu’il faut lever pour répondre à la législation prévue. Le programme présenté vise à acquérir des références sur deux espèces fruitières majeures, le pommier et le pêcher, afin d’orienter par la suite les pratiques culturales des pépiniéristes souhaitant proposer des plants certifiés AB. La question de recherche proposée concerne la stimulation des défenses naturelles, des test préliminaires sous serre permettant d’affiner un choix d’application au champ. Le matériel végétal, ainsi que la densité de plantation, la conduite culturale et l’entretien du rang font également partie des points techniques à renseigner. |
| Tipo: Project description |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2023 |
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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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| Dursun, Atilla; Ekinci, Melek. |
| İklim koşullarının olumsuz etkileri ve kışların uzun olmasından dolayı, bölgemizde özellikle Erzurum ilinde sebze yetiştiriciliği yeterince gelişmemiştir. Bu durum, bölgede ve ilimizde, sıcak iklim sebze türlerinin yetiştiriciliğini sınırlandırmaktadır. Yöre çiftçisi yoğunlukla et ve süt sığırcılığı yapmakta, bitkisel üretim olarak da daha çok tarla bitkileri ürünlerini yetiştirmektedir. Sebze yetiştiriciliği yörede lahana, patates gibi sebze türleri ile sınırlı kalmakta, yalnızca mikroklima alanlarda (Tortum, Uzundere, İspir, Oltu, Olur gibi) azda olsa sıcak iklim sebze türleri yetiştirilebilmektedir. İlimizde sebze yetiştiriciliğinde hemen hemen hiç kimyasal girdi kullanmamaktadır. Bu durum, yörede organik yetiştiriciliğin kolaylıkla yapılabileceğini... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Values; Standards and certification Breeding; Genetics and propagation. |
| Ano: 2010 |
URL: http://orgprints.org/26607/1/DURSUN%20VE%20EK%C4%B0NC%C4%B0.pdf |
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| Orabi, Jihad; Backes, Gunter; Wolday, Asmelash; Yahyaoui, Amor; Jahoor, Ahmed. |
| According to a widely accepted theory on barley domestication, wild barley (Hordeum vulgare ssp. spontaneum) from the Fertile Crescent is the progenitor of all cultivated barley (Hordeum vulgare ssp. vulgare). In order to determine whether barley has undergone According to a widely accepted theory on barley domestication, wild barley (Hordeum vulgare ssp. spontaneum) from the Fertile Crescent is the progenitor of all cultivated barley (Hordeum vulgare ssp. vulgare). To determine whether barley has undergone one or more domestication events, barley accessions from three continents have been studied (a) using 38 nuclear SSR (nuSSRs) markers, (b) using five chloroplast SSR (cpSSR) markers yielding 5 polymorphic loci and (c) by detecting the differences in a... |
| Tipo: Journal paper |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2007 |
URL: http://orgprints.org/10750/1/10750.pdf |
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| Urbatzka, Peer; Baur, A.; Salzeder, Georg; Cais, Kathrin. |
| The impact of seed source (conventional or organic farming) is one important question for the variety trials under the conditions of organic farming. Hence, field trials were conducted at two sites in Bavaria in two years (2013-2014). Certified organic seed from a Bavarian propagation were compared to conventional seed, offered by breeders for national variety trials. One until two varieties were examined for winter rye and for winter triticale in each year. Organic seed often showed higher crude protein content, conventional seed had mainly higher thousand seed weight and often superior germination power. The grain yield was mostly higher for conventionally produced seeds than for organic seed at one site, whereas seed source showed no differences with... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2017 |
URL: http://orgprints.org/31531/1/Pr%C3%BCfung%20der%20Saatgutherkunft%20aus%20%C3%B6kologischem%20und.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: 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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| A terme, un programme d’amélioration génétique pour l’agriculture biologique doit concevoir un nouveau type variétal adapté à ce type d'agriculture avec deux rôles essentiels : participer à l’équilibre du système de culture et offrir des produits de qualité. Le chou, et principalement le chou-fleur, reste une espèce légumière majeure en Bretagne. Même si les semenciers s’apprêtent à proposer des semences biologiques aux producteurs de choux pour 2004, les variétés hybrides F1 conçus pour l’agriculture conventionnelle ne pourront pas répondre aux besoins des agriculteurs biologiques (homogénéité génétique, manque de rusticité, stérilité mâle cytoplasmique…). Le projet propose de se donner les bases d’un travail de sélection à partir de ressources génétiques... |
| Tipo: Project description |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2023 |
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| Rasmussen, Martin Krøyer; Klausen, Christina Lindgaard; Ekstrand, Bo. |
| Chicory (Cichorium intybus) has been shown to induce enzymes of pharmacokinetic relevance (cytochrome P450; CYP). The aim of this study was to investigate the effects of selected secondary plant metabolites with a global extract of chicory root, on the expression of hepatic CYP mRNA (1A2, 2A19, 2C33, 2D25, 2E1 and 3A29), using primary porcine hepatocytes. Of the tested secondary plant metabolites, artemisinin, scoparone, lactucin and esculetin all induced increased expression of specific CYPs, while esculin showed no effect. In contrast, a global extract of chicory root decreased the expression of CYP1A2, 2C33, 2D25 and 3A29 at high concentrations. The results suggest that purified secondary metabolites from chicory affect CYP expression and thereby might... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth Breeding; Genetics and propagation. |
| Ano: 2013 |
URL: http://orgprints.org/24791/7/24791.pdf |
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| Registros recuperados: 808 | |
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