Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

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    Dataset for the annotations of the transcriptome of the hemp cultivar C. sativa ‘Finola’ (finola1) and the marihuana cultivar C. sativa ‘Purple Kush’
    Petit Pedro, Jordi ; Salentijn, Elma ; Loo, Robert van; Caldas Paulo, Joao ; Denneboom, Christel ; Trindade, Luisa - \ 2020
    Wageningen University & Research
    GWAS - Cannabis sativa - hemp - fibre quality - cell wall composition - RAD-sequencing - QTL - sex determination - flowering time - plant breeding
    This dataset contains the annotations of the two transcriptomes of the hemp cultivar C. sativa ‘Finola’ (finola1) and the marihuana cultivar C. sativa ‘Purple Kush’, aligned to the C. sativa ‘Purple Kush’ (canSat3 version GAC 000230575.1) assembly from the C. sativa Genome Browser Gateway (van Bakel et al., 2011). The annotations were performed using Local Blast and the data is provided in gff files. Gff means General Feature Format and it's a simple tab-delimited text file for describing genomic features. The files are ready to be uploaded in a genomic viewer.
    Dataset of the RADseq data and genotyping from a panel of 123 hemp accessions
    Petit Pedro, Jordi ; Salentijn, Elma ; Loo, Robert van; Caldas Paulo, Joao ; Denneboom, Christel ; Trindade, Luisa - \ 2020
    Wageningen University and Research
    GWAS - Cannabis sativa - hemp - fibre quality - cell wall composition - RAD-sequencing - QTL - sex determination - flowering time - plant breeding
    This dataset contains the raw RADseq data and genotyping data from a panel of 123 hemp (Cannabis sativa L.) accessions. For extra information about the RAD sequencing data analysis and the SNP marker selection, read the materials and methods of the paper 'Elucidating the genetic architecture of fibre quality in hemp (Cannabis sativa L.) using the Genome-Wide Association Study'.
    The Genomics of Cannabis and Its Close Relatives
    Kovalchuk, I. ; Pellino, M. ; Rigault, P. ; Velzen, R. Van; Ebersbach, J. ; Ashnest, J.R. ; Mau, M. ; Schranz, M.E. ; Alcorn, J. ; Laprairie, R.B. ; McKay, J.K. ; Burbridge, C. ; Schneider, D. ; Vergara, D. ; Kane, N.C. ; Sharbel, T.F. - \ 2020
    Annual Review of Plant Biology 71 (2020). - ISSN 1543-5008 - p. 713 - 739.
    biosynthesis pathway evolution - Cannabaceae - Cannabis sativa L. - genomics - hemp - hops - Humulus lupulus - proteomics - Y chromosome

    Cannabis sativa L. is an important yet controversial plant with a long history of recreational, medicinal, industrial, and agricultural use, and together with its sister genus Humulus, it represents a group of plants with a myriad of academic, agricultural, pharmaceutical, industrial, and social interests. We have performed a meta-analysis of pooled published genomics data, andwe present a comprehensive literature review on the evolutionary history of Cannabis and Humulus, including medicinal and industrial applications. We demonstrate that current Cannabis genome assemblies are incomplete, with sim10% missing, 10-25% unmapped, and 45S and 5S ribosomal DNA clusters as well as centromeres/satellite sequences not represented. These assemblies are also ordered at a low resolution, and their consensus quality clouds the accurate annotation of complete, partial, and pseudogenized gene copies. Considering the importance of genomics in the development of any crop, this analysis underlines the need for a coordinated effort to quantify the genetic and biochemical diversity of this species.

    Genetic Variability of Morphological, Flowering, and Biomass Quality Traits in Hemp (Cannabis sativa L.)
    Petit, Jordi ; Salentijn, Elma M.J. ; Paulo, Maria João ; Thouminot, Claire ; Dinter, Bert Jan van; Magagnini, Gianmaria ; Gusovius, Hans Jörg ; Tang, Kailei ; Amaducci, Stefano ; Wang, Shaoliang ; Uhrlaub, Birgit ; Müssig, Jörg ; Trindade, Luisa M. - \ 2020
    Frontiers in Plant Science 11 (2020). - ISSN 1664-462X
    Cannabis sativa - cell wall composition - fiber quality - flowering time - genetic variability - genotype-by-environment (G×E) interactions - hemp - sex determination

    Hemp (Cannabis sativa L.) is a bast-fiber crop well-known for the great potential to produce sustainable fibers. Nevertheless, hemp fiber quality is a complex trait, and little is known about the phenotypic variability and heritability of fiber quality traits in hemp. The aim of this study is to gain insights into the variability in fiber quality within the hemp germplasm and to estimate the genetic components, environmental components, and genotype-by-environment (G×E) interactions on fiber quality traits in hemp. To investigate these parameters, a panel of 123 hemp accessions was phenotyped for 28 traits relevant to fiber quality at three locations in Europe, corresponding to climates of northern, central, and southern Europe. In general, hemp cultivated in northern latitudes showed a larger plant vigor while earlier flowering was characteristic of plants cultivated in southern latitudes. Extensive variability between accessions was observed for all traits. Most cell wall components (contents of monosaccharides derived from cellulose and hemicellulose; and lignin content), bast fiber content, and flowering traits revealed large genetic components with low G×E interactions and high broad-sense heritability values, making these traits suitable to maximize the genetic gains of fiber quality. In contrast, contents of pectin-related monosaccharides, most agronomic traits, and several fiber traits (fineness and decortication efficiency) showed low genetic components with large G×E interactions affecting the rankings across locations. These results suggest that pectin, agronomic traits, and fiber traits are unsuitable targets in breeding programs of hemp, as their large G×E interactions might lead to unexpected phenotypes in untested locations. Furthermore, all environmental effects on the 28 traits were statistically significant, suggesting a strong adaptive behavior of fiber quality in hemp to specific environments. The high variability in fiber quality observed in the hemp panel, the broad range in heritability, and adaptability among all traits prescribe positive prospects for the development of new hemp cultivars of excellent fiber quality.

    Phenotypic Variation of Cell Wall Composition and Stem Morphology in Hemp (Cannabis sativa L.): Optimization of Methods
    Petit, Jordi ; Gulisano, Agata ; Dechesne, Annemarie ; Trindade, Luisa M. - \ 2019
    Frontiers in Plant Science 10 (2019). - ISSN 1664-462X
    Cannabis sativa - cell wall - fiber quality - genetic diversity - hemp - phenotyping methods - stem morphology

    The growing demands for sustainable fibers have stimulated the study of genetic diversity in the quality of hemp fiber (Cannabis sativa L.). Nevertheless, the lack of high-throughput phenotyping methods that are suited for the analysis of hemp fiber, hampers the analysis of many accessions, and consequently the breeding for this complex trait. In the present report, we developed and optimized the throughput of five methods to study the diversity in hemp fiber quality including cell wall extraction, biochemical composition of cell wall polysaccharides, quantification of lignin, quantification of crystalline polysaccharides and morphology of the stems. Six hemp accessions contrasting for cell wall properties were used to assess the throughput and suitability of these methods for genetic studies. The methods presented revealed to be highly repeatable, with low coefficients of variation between technical replicates. With these methods we were able to detect significant phenotypic variation in cell wall composition and stem morphology between the six accessions. In addition, the throughput of the methods has been upgraded to a level that enables their use for phenotyping cell wall traits in breeding programs. The cell wall extraction was optimized to extract enough material for the complete characterization of the cell wall of hemp while reducing the time for the entire analysis. The throughput of the stem morphological analysis was improved by decreasing the timing of fixation, infiltration, and embedding of mature and dry hemp stems. Notwithstanding, our methods already have the potential to phenotype large number of accessions in a relatively short period of time. Our methods will enable exploration of genetic diversity of fiber quality and will contribute to the development of new hemp varieties with advanced quality of fibers.

    Tomatenplant wordt spijkerbroek
    Trindade, L.M. - \ 2019
    biobased economy - crop residues - hemp - miscanthus - clothing
    Stof tot nadenken: vier manieren om de mode-industrie duurzamer te maken
    Louwerens, Tessa ; Poldner, Kim ; Fischer, A.R.H. ; Broek, L.A.M. van den; Dam, J.E.G. van; Houthoff, Iris - \ 2018
    biobased materials - clothing - fibres - algae - biomass - hemp - dyes - pigments - bioplastics - biopolymers - ink - natural products
    10 recommendations for stimulating bio-based builing materials
    Mey, V. De; Verhoeven, J.T.W. ; Thoelen, P. ; Dam, J.E.G. van; Meyskens, S. ; Schik, W. - \ 2016
    [Belgium] : Grow2Build - 17
    building materials - flax - hemp - biobased materials - biobased economy - stimulation - guidelines - northwestern europe - bouwmaterialen - vlas - hennep - materialen uit biologische grondstoffen - biobased economy - stimulatie - richtlijnen (guidelines) - noordwest-europa
    The objective of the Northwest European project Grow2build is to support the supply chain of flax and hemp building materials from production of raw material to the production and implementation of end products. Up until now, 11 organisations from Belgium, France, the UK, Germany and the Netherlands have formed a consortium with a wealth of expertise in construction and bio-based building materials. The consortium aims to contribute to the integration of bio-based materials eg. hemp and flax in the construction industry and to improve the product value chain. This note “10 recommendations for stimulating biobased building materials (based on hemp and flax)” is one of the instruments to reach the aim.
    Hemp for textiles : plant size matters
    Westerhuis, W. - \ 2016
    Wageningen University. Promotor(en): Paul Struik, co-promotor(en): Tjeerd-Jan Stomph; Jan van Dam. - Wageningen : Wageningen University - ISBN 9789462577879 - 234
    cannabis sativa - fibre plants - textile fibres - textiles - photoperiod - hemp - plant fibres - plant density - harvesting date - sowing date - biobased materials - cannabis sativa - vezelgewassen - textielvezels - textiel - fotoperiode - hennep - plantenvezels - plantdichtheid - oogsttijdstip - zaaitijd - materialen uit biologische grondstoffen


    Key words: Cannabis sativa L., day length sensitivity, fibre hemp, genotype, harvest time, plant density, plant weight, primary fibres, secondary fibres, sowing date, textiles.

    Westerhuis, W. (2016) Hemp for textiles: plant size matters, PhD thesis. Wageningen University, Wageningen, The Netherlands, 234 pp. With English and Dutch summaries.

    Fibre hemp (Cannabis sativa L.) may be an alternative to cotton and synthetic fibres as a raw material for textile yarn production in the European Union. The agronomic options to manipulate plant development and crop growth with the aim to optimise hemp long fibre production were investigated. Field trials with factors sowing density, sowing date, harvest time and variety were conducted. Stems were traditionally processed by retting, drying, breaking, and scutching. Following standard protocols, almost 1500 hemp stem samples were analysed. Varieties differ widely in their fibre content, but this thesis shows that when variety and plant size are known, the amounts of fibres, wood, and retting losses are known. The dry weight of the stems at harvest, not the factors underlying this weight, are determinant. In retted stems the dry matter is split–up into fibres and wood in a fixed way. The options to manipulate this ratio by crop management, given variety, are very small and for practical reasons they can be neglected. In fibre hemp two bast fibre types occur. Primary or long fibres are valuable for yarn spinning. Secondary fibres are too short and their presence hampers the production of fine yarns. This thesis shows that the secondary fibre front height increases with plant weight. Although a causal relationship between secondary fibre formation and flowering does not exist, the secondary fibre front is found higher in flowering plants when compared to non–flowering plants of the same height. This is likely to be caused by the higher weight or momentum of flowering plants as compared with non–flowering plants of the same height. Consequently, a harvest before flowering is preferable. This was shown in a greenhouse experiment, in which the short–day response of hemp was used to create size ranges of flowering and non–flowering plants. To produce high–quality raw materials for textile production, short crops should be grown. The options to produce plants with the desired size are manifold. Since sowing density, sowing date, and harvest time do not have an additional effect on the primary fibre content besides the indirect effect through stem weight, any combination of these factors could be chosen to optimize plant size.

    Hennep in Europa
    Loo, E.N. van - \ 2014
    Wageningen UR, Plant Breeding
    vezelgewassen - hennep - agrarische geschiedenis - vezels - textiel - biobased economy - fibre plants - hemp - agricultural history - fibres - textiles - biobased economy
    Samenvatting van de geschiedenis van de hennepteelt en de hedendaagse mogelijkheden van hennep.
    Inkomensvergelijking vezelgewassen versus graan
    Wolf, P.L. de; Brink, L. van den; Spruijt, J. - \ 2012
    Lelystad : Praktijkonderzoek Plant & Omgeving, Business Unit Akkerbouw, Groene Ruimte en Vollegrondsgroenten (PPO 518) - 13
    vlas - inkomsten uit het landbouwbedrijf - bedrijfseconomie - rendement - vezelgewassen - hennep - akkerbouw - biobased economy - subsidies - markteconomie - flax - farm income - business economics - returns - fibre plants - hemp - arable farming - biobased economy - subsidies - market economics
    In 2012 is de verwerkingssteun voor o.a. vezelvlas en vezelhennep volledig ontkoppeld. Dat betekent dat deze steun wordt omgezet in een vaste inkomenstoeslag voor de teler, die daarvoor niet langer verplicht is om vlas of vezelhennep te telen. Daardoor dreigt de teelt van vlas en vezelhennep het af te leggen tegen financieel aantrekkelijkere teelten. In dit onderzoek worden de financiële aspecten voor agrarische ondernemers berekend, om het ministerie van EL&I te informeren bij beleidsvorming. Omdat de beide teelten regionaal geconcentreerd zijn, wordt de vergelijking gemaakt voor vlasteelt in Zuidwest Nederland en voor vezelhennep voor het Noordoostelijk zand- en dalgebied.
    Oliehennep - Cannabis Sativa / Eiwit en oliepad
    PPO Akkerbouw, Groene Ruimte en Vollegrondsgroente, - \ 2012
    hennep - cannabis sativa - olieleverende planten - planten met oliehoudende zaden - vezelgewassen - medicinale planten - voedergewassen - gewassen - akkerbouw - biobased economy - hemp - cannabis sativa - oil plants - oilseed plants - fibre plants - medicinal plants - fodder crops - crops - arable farming - biobased economy
    Factsheet van het Eiwit en Oliepad met korte informatie over het gewas Oliehennep. Met het project Eiwit & Oliepad wil Innovatief Platteland samen met de gemeente Venray en andere partners het publiek de gelegenheid geven zich een beeld te vormen van de enorme multifunctionaliteit en de nog steeds verder te ontdekken mogelijkheden van in Europa te telen gewassen als grondstof voor de biobased economie
    Effect van hennep op de populatiedichtheid van het wortellesieaaltje (Pratylenchus penetrans)
    Wijnholds, K.H. - \ 2010 2010 (2010)4 maart.
    hennep - pratylenchus penetrans - plantenplagen - populatiedynamica - plagenbestrijding - akkerbouw - vezelgewassen - waardplanten - hemp - pratylenchus penetrans - plant pests - population dynamics - pest control - arable farming - fibre plants - host plants
    In 2009 is in opdracht van Hempflax Agro BV en het Productschap Akkerbouw (PA) onderzoek gedaan naar het effect van hennep op de populatiedichtheid van Pratylenchus penetrans. De vraag hierbij was of de nu gebruikelijke, kortere teeltduur van dit gewas (zaai in mei en oogst in augustus in plaats van oogst in oktober) van invloed is op de vermeerdering van deze aaltjes. Op basis van deze éénjarige proef lijkt hennep ook bij kortere teeltduur een (heel) goede waardplant te zijn voor Pratylenchus penetrans. Hennep zelf lijkt niet gevoelig voor schade.
    Effect van hennep op de populatiedichtheid van Pratylenchus penetrans
    Wijnholds, K.H. ; Hoek, H. - \ 2010
    Lelystad : PPO AGV - 15
    cannabis sativa - hennep - pratylenchus penetrans - populatiedynamica - teeltsystemen - plagenbestrijding - nederland - akkerbouw - cannabis sativa - hemp - pratylenchus penetrans - population dynamics - cropping systems - pest control - netherlands - arable farming
    Resultaten van onderzoek met als vraagstelling in hoeverre bij een kortdurende teelt (mei – augustus) hennep een minder grote vermeerdering geeft van Pratylenchus penetrans dan op basis van oud onderzoek (bij een langdurende teelt) zou mogen worden verwacht. Op basis van dit éénjarige onderzoek lijkt hennep echter ook bij een vroeger oogsttijdstip een (zeer) goede waardplant te zijn voor Pratylenchus penetrans.
    Vlasteelt in Nederland in problemen door verandering EU-beleid
    Bont, C.J.A.M. de; Jager, J.H. ; Janssens, S.R.M. - \ 2008
    Agri-monitor 2008 (2008)oktober. - ISSN 1383-6455 - 2
    akkerbouw - teelt - vlas - hennep - wereldmarkten - gemeenschappelijk landbouwbeleid - landbouwontwikkeling - nederland - zeeuws-vlaanderen - arable farming - cultivation - flax - hemp - world markets - cap - agricultural development - netherlands - zeeuws-vlaanderen
    Door veranderingen in het EU-beleid valt de teelt en verwerking van vlas in Nederland mogelijk weg en kan de ontwikkeling van de vezelhennepteelt moeilijkheden ondervinden. Het wegvallen van de vlasteelt en –verwerking zou ook verlies aan biodiversiteit, aan kenmerkende landschapsbeelden en cultureel erfgoed inhouden.
    Annual fibre crop systems : EU ENFA project (SSPE-CT-2005-006581)
    Lips, S.J.J. ; Dam, J.E.G. van; Elbersen, H.W. - \ 2008
    Wageningen : Agrotechnology & Food Sciences Group
    fibre plants - agro-industrial chains - natural fibres - flax - hemp - kenaf - european union - biobased materials - biobased economy - environmental impact - vezelgewassen - agro-industriële ketens - natuurlijke vezels - vlas - hennep - kenaf - europese unie - materialen uit biologische grondstoffen - biobased economy - milieueffect
    This report is the final report of WP26 on the annual fibre crops systems as studied in the EU ENFA project (SSPE-CT-2005-006581). The ENFA project aims to develop a dynamic agricultural and forest sector model for the integrated economic and environmental assessment of non-food alternatives in European agriculture and forestry. This report includes a description of fibre crop production chains of long and short fibres, as well as a market description of fibre crop products, with emphasis on flax, hemp and kenaf. Also environmental aspects of these chains and the regulations concerning fibre crops are addressed.
    Vlas en vezelhennep en herziening van het EU-beleid
    Bont, C.J.A.M. de; Jager, J.H. ; Janssens, S.R.M. - \ 2008
    Den Haag : LEI Wageningen UR (Rapport / LEI : Werkveld 1, Internationaal beleid ) - ISBN 9789086152551 - 72
    vlas - hennep - plantenvezels - landbouwproductie - gemeenschappelijk landbouwbeleid - subsidies - landbouwsector - agrarische economie - eu regelingen - nederland - biobased economy - flax - hemp - plant fibres - agricultural production - cap - subsidies - agricultural sector - agricultural economics - eu regulations - netherlands - biobased economy
    Vlas en vezelhennep en herziening van het EU-beleid geeft de mogelijke gevolgen aan van het ontkoppelen en opheffen van de Europese steun voor de betreffende sectoren in Nederland. Het rapport geeft een beeld van deze sectoren in Nederland en van de positie van Nederland in de EU op die terreinen. Geconcludeerd wordt dat ontkoppeling en het opheffen van de steun kan leiden tot het wegvallen of fors verminderen van de omvang van deze sectoren. 'Flax, hemp and the revision of EU policy' points out the possible consequences of decoupling and abolishing European support for the concerned sectors within the Netherlands. The report gives a picture of these sectors in the Netherlands and the position of the Netherlands within the EU in these fields. The conclusion can be drawn that the decoupling and abolition of the support could lead to the disappearance or considerable reduction of the size of these sectors.
    Report of a Working Group on Fibre Crops (Flax and Hemp)
    Bas, N. ; Pavelek, M. ; Maggioni, L. ; Lipman, E. - \ 2007
    Rome, Italy : Bioversity International - 28
    genenbanken - vezelgewassen - vlas - hennep - databanken - plantenverzamelingen - gene banks - fibre plants - flax - hemp - databases - plant collections
    Members of the newly established ECPGR Working Group on Fibre Crops (Flax and Hemp), in the framework of Sugar, Starch and Fibre Crops Network, met for the first time at Wageningen, the Netherlands on 14–16 June 2006. Fifteen participants from the Czech Republic, Germany, Hungary, Italy, Latvia, Lithuania, the Netherlands, Poland, Portugal and Romania took part in the meeting to discuss flax and hemp national collection status reports as well as flax and hemp international databases development.
    Hennep voor textiel : de Agro-industriële productieketen
    Dam, J.E.G. van; Heugten, W.G.N. van - \ 2006
    textiel - hennep - vezels - kwaliteit - biobased economy - agro-industriële ketens - ketenmanagement - textiles - hemp - fibres - quality - biobased economy - agro-industrial chains - supply chain management
    Poster met informatie over de productie van textiel uit hennepvezels.
    Hemp-Sys, integrated quality system of hemp fibre for textile processing
    Dam, Jan van - \ 2006
    hemp - fibres - textile industry - quality - length - fibre quality - quality controls - biobased economy - agro-industrial chains - supply chain management
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