352 Works

Mutagenic effects of sodium azide on pineapple micropropagant growth and biochemical profile within temporary immersion bioreactors

Daviel Gómez, Lazaro Hernandez, Julia Martínez, Janet Quiñones, Byron Zevallos, Naidoo Sershen, Lourdes Yabor & José Carlos Lorenzo Feijoo
Sodium azide (NaN3) is widely used to induce mutagenesis within in vitro plant systems. However, since this mutagenesis is undirected, its unintended effects demand characterization. This study investigated the mutagenic effects of sodium azide (0-0.45 mM) on selected growth (shoot multiplication rate and shoot cluster fresh weight) and biochemical (aldehydes, chlorophylls, carotenoids and phenolics) parameters in pineapple micropropagants within temporary immersion bioreactors (TIBs). The content of soluble phenolics in the culture medium was also evaluated....

Preliminary results on forcing vine regrowth to delay ripening to a cooler period

F. Martinez De Toda, J. García & P. Balda
The most important climate-change-related effect on wine grapes is the advance in the harvest period. The increase of temperature during the whole growing season, and consequently, the warmer conditions over ripening, lead to the production of unbalanced wines with high alcohol levels, low acidities, a modified varietal aroma and a lack of color. One of the strategies to mitigate these unpleasant effects consists on delaying the berry ripening to cooler conditions. With the aim of...

Experimental raw data from the assessment of operator exposure during the filling process - Closed Transfer Systems (CTS)

Matthias Kemmerling, Jens-Karl Wegener, Dirk Rautmann, Jan-Philip Pohl, Eckhard Immenroth & Dieter Von Hörsten
The data includes raw spectrofluorometric measurements (Device: Kontron Instruments SFM25) and volume measurements from two experimental parts of the trial program (see related resource for detailed information). Subject of the program was the investigation of operator exposure during the filling process of a field crop sprayer with concentrated Plant Protection Products (PPP). In several experiments, the exposure of different dosimeters (Visor, Protective Gloves, Laboratory Gloves, Overalls and Underwear) was evaluated. The fluorescent tracer dye pyranin...

Statusbericht Biologischer Pflanzenschutz 2018

Eckhard Koch, Annette Herz, Regina G. Kleespies, Annegret Schmitt, Dietrich Stephan & Johannes A. Jehle
Berichte aus dem Julius Kühn-Institut, Nr. 203 (2019): Statusbericht Biologischer Pflanzenschutz 2018

Advice for functional inspection of postharvest application equipment

Francesc Solanelles

Autotetraploid plant production in endemic Onobrychis elata with colchicine treatments

Suleyman Avci, Metin Tuna & Mehmet Demir Kaya
This study aimed to induce autotetraploidy in endemic Onobrychis elata plants by colchicine treatment of seeds or seedlings. Colchicine was applied to O. elata directly on germinated seeds, pre-germinated seeds (root length of 3-8 mm), and apical regions (using cotton) under in vivo conditions. Out of a total of 1,210 colchicine-treated seeds that were evaluated, only 203 survived. There was an inverse relationship between the number of surviving plants and colchicine concentration and exposure time....

Variability of thujone content in essential oil due to plant development and organs from Artemisia absinthium L. and Salvia officinalis L.

Huong Thi Nguyen, Péter Radácsi, Péter Rajhárt & Éva Zámboriné Németh
The study compared changes in essential oil content and its thujone ratio in two popular herbs (Artemisia absinthium L. and Salvia officinalis L.), pertaining to plant development and plant organs. Both species were harvested in 2018 at the vegetative, floral budding, flowering and after flowering phases; flowers and leaves were sampled separately. The essential content is always higher in the flowers than in the leaves at the same phenophase in both species we examined. Decreased...

Bitter gourd, Momordica charantia L., breeding lines differ in secondary metabolite content according to market type

Bernhard Trierweiler, Matthias A. Frechen, Sebastian T. Soukup, Björn Egert, Susanne Baldermann, Supannika Sanguansil, James D. McCreight, Sabine E. Kulling & Narinder P.S. Dhillon
Bitter gourd, Momordica charantia L., is an important commercial cucurbitaceous vegetable of enormous medicinal value in Asia because of its secondary metabolite content. We report here the characterization and evaluation of open-pollinated (OP) edible South Asian and Southeast Asian types of bitter gourd breeding lines, developed at the World Vegetable Center, for horticultural traits (11 OP) and secondary metabolites (10 OP) and their comparisons with commercial OP and F1 hybrid cultivars. Marketable yields of South...

Schadorganismensteckbrief für Tecia solanivora

Gritta Schrader, Melanie Camilleri, Makrina Diakaki & Sybren Vos

Sortenmischungen für einen stabilen ökologischen Salatanbau

Ute Gärber & Oldendorfer Saatzucht Kultursaat E. V.

High resolution mapping and identification of candidate genes for the BaMMV/BaYMV-resistance gene rym13 and Ryd3 involved in BYDV-tolerance of barley

Sandra Färber
Barley yellow mosaic disease, caused by Barley mild mosaic virus (BaMMV) and Barley yellow mosaic virus (BaYMV), and barley yellow dwarf, caused by Barley yellow dwarf virus (BYDV), are important diseases of barley causing high yield losses. As BaMMV and BaYMV are transmitted by the soil-borne plasmodiophorid Polymyxa graminis and BYDV by aphids, the only environmently sound way to prevent these yield losses is breeding for resistant/tolerant cultivars. In this thesis, high resolution mapping and...

Cryopreservation of grapevine (Vitis spp.) shoot tips from growth chamber-sourced plants and histological observations

J. C. Bettoni, R. Bonnart, A. Shepherd, A. A. Kretzschmar & G. M. Volk
Many genebanks rely on cryopreservation as a method to preserve vulnerable field collections of vegetatively propagated crops. Effective cryopreservation procedures have been identified for Vitis; however, they usually use in vitro plantlets as the shoot tip source materials. It is costly to establish Vitis collections in vitro prior to cryopreservation. We sought to determine if growth chamber derived Vitis plants could serve as the source of shoot tips for cryopreservation. Nodal sections from growth chamber...

Schadorganismensteckbrief für Popillia japonica

Gritta Schrader
Dieser Schadorganismensteckbrief wurde im Rahmen des Mandats zur Überwachung von Schadorganismen von Pfl anzen (EFSA-Q-2017-00831) auf Ersuchen der Europäischen Kommission erstellt. Die Zielsetzung dieses Dokumentes ist, die Mitgliedstaaten bei der Planung der jährlichen Erhebungsaktivitäten zu Quarantäneschadorganismen zu unterstützen, indem ein statistisch fundierter und risikobasierter Ansatz zu Schadorganismenerhebungen in Übereinstimmung mit gültigen internationalen Standards angewendet wird. Die erforderlichen Daten für diese Tätigkeiten umfassen die Verbreitung des Schadorganismus, seinen Wirtspfl anzenkreis, seine Biologie, Risikofaktoren sowie verfügbare Methoden...

The effector protein AvrRpt2EA from Erwinia amylovora induces salicylic acid response in apple

Henryk Flachowsky, Susan Schröpfer, Christoph Böttcher, Thomas Wöhner, Klaus Richter, John Norelli, Erik Rikkerink & Magda-Viola Hanke
The AvrRpt2EA effector protein of Erwinia amylovora is important for pathogen recognition in the fire blight-resistant crabapple Malus × robusta 5; however, little is known about its role in susceptible apples. To study its function in planta, we expressed a plant-optimized version of AvrRpt2EA driven by a heat shock-inducible promoter in transgenic plants of the fire blight-susceptible cultivar Pinova. After induced expression of AvrRpt2EA, transgenic lines showed shoot necrosis and browning of older leaves, with...

Genetische Erhaltungsgebiete für Apium graveolens L. subsp. graveolens

Marion Nachtigall, Maria Bönisch, Uta Schirmak, Lorenz Bülow & Lothar Frese

Anfälligkeit von Apfel gegenüber Feuerbrand

Monika Höfer, Andreas Peil & Klaus Richter

Annual Report 2017

Arbeitskreis Krankheiten im Getreide und Mais – 2019

Helmut Tischner
Journal für Kulturpflanzen, Bd. 71 Nr. 5 (2019)

12. Treffen der Interdisziplinären Arbeitsgruppe Ambrosia am Julius Kühn-Institut

Uwe Starfinger & Ulrike Sölter
Journal für Kulturpflanzen, Bd. 71 Nr. 5 (2019)

Getreideroste - Pathogenentwicklung und Sortenbewertung

Anne-Kristin Schmitt, Caroline Breidenbach, Kerstin Flath & Bettina Klocke

Anmerkungen zur Nomenklatur von Monilia coryli

Gerhard Bedlan
Die als Monilia coryli benannte Monilia-Form an Haselnüssen muss gemäß nomenklatorischer Vorgaben mit ihrem sexuellen Stadium Ciboria coryli bezeichnet werden. DOI: 10.5073/JfK.2019.02-03.03, https://doi.org/10.5073/JfK.2019.02-03.03

German Fruit Genebank – looking back 10 years after launching a national network for sustainable preservation of fruit genetic resources

Monika Höfer, Henryk Flachowsky & Magda-Viola Hanke
In Germany, all activities of long-term preservation, utilization, research and development of fruit genetic resources are based on the German National Program for Genetic Resources of Agricultural and Horticultural Plants. The preservation of fruit genetic resources is the basis for ensuring a sustainable fruit production in Germany. It has a long-lasting tradition, which reaches back to the early decades of the 20th century. Ever since, a multitude of cultivars of different fruit crop species is...

Holz auf landwirtschaftlichen Flächen: Unterschiede zwischen Anbauern und Nicht-Anbauern

Lara Beer & Ludwig Theuvsen
Aktuell wird in Deutschland auf rd. 7.000 ha Agrarholz angebaut. Ziel des Agrarholzanbaus ist die großflächige Holzhackschnitzelproduktion zur Strom- und Wärme­erzeugung. Mit Agrarholz können Landwirte zudem einen Teil der Greening-Anforderungen der aktuellen EU-Agrarpolitik erfüllen. Insgesamt weist der Agrarholz­anbau aufgrund der Klimaschutzziele ein großes Wachstumspotential auf, denn bis 2030 wird eine Verdoppelung des Energieholzbedarfs erwartet. Allerdings kommt dem Agrarholzanbau bislang trotz ökologischer Vorteile und gesellschaftlicher Akzeptanz nur eine geringe Bedeu­tung in der deutschen Landwirtschaft zu. Vor...

Zum Auftreten von Athelia rolfsii an Apfel in Baden-Württemberg

Jan Hinrichs-Berger, Kamilla Zegermacher & Gabi Zgraja
Im Sommer 2017 kam es in einer Apfelanlage bereits drei Monate nach der Pflanzung zu Baumausfällen. Die absterbenden Bäume wiesen eine deutliche Kragenfäule auf, aus der sich der Pilz Athelia rolfsii (Curzi) C. C. Tu & Kimbr. (Anamorph: Sclerotium rolfsii Sacc.) isolieren ließ. In einem Biotest wurde die Pathogenität des Isolats an neun Malus Unterlagen geprüft. Fast alle Unterlagen erwiesen sich als anfällig, wenn die Inokulation in eine Wunde erfolgte. Aus der Fäule ließ sich...

Genetic diversity among North African faba bean landraces for competitive ability against weeds

Nora Aqtbouz, Wolfgang Link, Loubna Belqadi & Lamiae Ghaouti
The genetic diversity of Moroccan faba bean (Vicia faba L.) landraces should be exploited to improve the competitive ability of faba beans against weeds. The objective of this study was to in-detail evaluate competitive ability and productivity of a collection of Moroccan faba bean landraces relative to a model weed, Sinapis alba. Sixty Moroccan faba bean landraces and two checks were evaluated in 2011 and 2013 for grain yield and further agronomic traits, with and...

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  • 2019
    352

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  • Text
    352

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  • Julius Kühn-Institut
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