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Teses / dissertações sobre o tema "Lolium perenne"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

Liu, Jianyang. "Morphological and genetic variation within perennial ryegrass (Lolium perenne l.)." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127245394.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 123 p.; also includes graphics (some col.). Includes bibliographical references (p. 99-107). Available online via OhioLINK's ETD Center

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2

Will, Jacqueline Ann Kennedy. "Genome analysis in Lolium." Thesis, Aberystwyth University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344086.

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3

Chen, Caifu. "Molecular genome characterization and introgression in Lolium perenne and Festuca species /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9809676.

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4

Cao, Mingshu. "Molecular cytogenetic analysis of genomes between Festuca mairei and Lolium perenne /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3012953.

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5

Barrett, S. K. "Growth regulators in Lolium perenne grown for seed." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378463.

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6

Huang, Ji-Wei. "Wear tolerance in perennial ryegrass (Lolium perenne L.)." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389474.

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7

Meharg, Andrew Alexander. "Factors affecting rhizosphere carbon-flow in Lolium perenne." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU031803.

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The dynamics of root carbon have been studied on a limited number of plants under a limited range of environmental conditions. This is particularly true of temperate pasture grasses. It was proposed to investigate rhizosphere carbon flow within Lolium perenne, to determine environmental factors affecting root exudation and root respiration. A number of microcosms were designed in which ryegrass could be pulse labelled with 14C-CO2, and the fate of the label determined within a plant-soil system. A wide range of factors were found to affect the distribution of carbon within the plant and soil u

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8

Kavanová, Monika. "Leaf growth regulation in Lolium perenne under nutrient stress." [S.l.] : [s.n.], 2006. http://mediatum2.ub.tum.de/doc/613553/document.pdf.

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9

Manzanares, Chloé. "Genetics of self-incompatibility in perennial ryegrass (Lolium perenne L.)." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4280/.

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Self-incompatibility (SI) prevents pollination by “self” pollen and promotes outbreeding. SI is a widespread mechanism among angiosperms. Grass SI is known to be controlled by two loci, S and Z, mapped in linkage group 1 and 2 respectively but the mechanism remains elusive. SI in perennial ryegrass (Lolium perenne L.) is studied at the gene level for the S-locus. Using a fine-mapping approach, followed by the sequencing of the genomic S-locus region and the transcripts from pollen and stigma, the project identified four stigma S-candidate genes and potentially six pollen S-candidate genes. Mor

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10

Bushoven, John T. "The role of nitrate and carbohydrates in modulating the partitioning of nitrate assimilation between leaves and roots in perennial ryegrass (Lolium perenne L.) /." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3112113.

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11

Kraus, Edwin. "Yield and respiration of populations of Lolium perenne as affected by plant growth conditions = Opbrengst en ademhaling van populaties van Lolium perenne onder verschillende kweek kondities /." [S.l. : s.n.], 1995. http://www.gbv.de/dms/bs/toc/189735295.pdf.

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12

Raikar, Sanjeev Vencu. "Protoplast fusion of Lolium perenne and Lotus corniculatus for gene introgression." Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20080214.105406/.

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Protoplast fusion of Lolium perenne and Lotus corniculatus for gene introgression by Sanjeev V. Raikar Lolium perenne is one of the most important forage crops globally and in New Zealand. Lotus corniculatus is a dicotyledonous forage that contains valuable traits such as high levels of condensed tannins, increased digestibility, and high nitrogen fixing abilities. However, conventional breeding between these two forage crops is impossible due to their markedly different taxonomic origin. Protoplast fusion (somatic hybridisation) provides an opportunity for gene introgression between these two

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13

Raikar, S. V. "Protoplast fusion of Lolium perenne and Lotus corniculatus for gene introgression." Diss., Lincoln University, 2007. http://hdl.handle.net/10182/301.

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Lolium perenne is one of the most important forage crops globally and in New Zealand. Lotus corniculatus is a dicotyledonous forage that contains valuable traits such as high levels of condensed tannins, increased digestibility, and high nitrogen fixing abilities. However, conventional breeding between these two forage crops is impossible due to their markedly different taxonomic origin. Protoplast fusion (somatic hybridisation) provides an opportunity for gene introgression between these two species. This thesis describes the somatic hybridisation, the regeneration and the molecular analysis

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14

Jupp, A. P. "Some effects of severe drought on the roots of Lolium perenne." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375027.

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15

Yang, Bicheng. "Investigations of self-incompatibility (SI) in perennial ryegrass (Lolium perenne L.)." Thesis, University of Birmingham, 2009. http://etheses.bham.ac.uk//id/eprint/1097/.

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Perennial ryegrass (Lolium perenne L.) is one of the most economically and environmentally important grass species for the temperate zone. It maintains effective self-incompatibility (SI), which promotes outbreeding as well as limits the efficient production of inbred lines and hybrids. SI in L. perenne is controlled by the S and Z loci, mapping to linkage groups 1 and 2, respectively. None of the gene products has been identified so far. Comparative mapping has identified regions on rice chromosomes 5 (R5) and 4 with synteny to regions of L. perenne genome containing the S and Z loci, respect

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16

Foito, Alexandre. "A metabolomics-based approach to study abiotic stress in Lolium perenne." Thesis, University of Dundee, 2010. https://discovery.dundee.ac.uk/en/studentTheses/897810b2-4b52-43a8-a687-d21fef3a6d1e.

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In the United Kingdom and Ireland, a major percentage of fertilized agricultural area is devoted to grasslands, which helps to support the associated milk and beef production industries. In temperate grasslands, perennial ryegrass (L. perenne) is the major forage grass and this species is particularly suitable as a forage grass due to its high yield and digestibility, when compared with other species. However, perennial ryegrass is not well adapted to abiotic stress conditions which are likely to occur in its natural environment. Some of the abiotic stress factors which have significant impact

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17

GUERRAND, DAVID. "Etude des voies de synthese des fructanes chez lolium perenne l." Caen, 1997. http://www.theses.fr/1997CAEN2036.

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Chez les poacees, la synthese des fructanes serait catalysee par plusieurs enzymes vacuolaires dont la sst, consideree comme etant l'enzyme cle du metabolisme des fructanes. La sst catalyse la synthese d'un trisaccharide, le 1-kestotriose, a partir de deux molecules de saccharose, et n'a pas encore ete purifiee a l'homogeneite chez les poacees. Chez les especes du genre lolium, ce modele ne permet pas de rendre compte de la synthese de l'ensemble des fructanes detectes in vivo, et notamment des fructanes de masse moleculaire elevee. Une voie enzymatique additionnelle, associee a la fraction pr

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18

Nurjaya, I. Gusti Made Oka. "Studies on the competitive ability of white clover (Trifolium repens L.) in mixtures with perennial ryegrass (Lolium perenne L.) : the importance of non-structural carbohydrate reserves and plant traits /." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09APSP/09apspi11.pdf.

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19

Bazely, Dawn. "Foraging behaviour of sheep (Ovis aries L.) grazing on swards of perennial ryegrass (Lolium perenne L.)." Thesis, University of Oxford, 1988. http://ora.ox.ac.uk/objects/uuid:d48c2508-a774-43b4-805b-9470971bd236.

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The grazing behaviour and diet selection of a vertebrate herbivore, the domestic sheep (ovis aries L.), feeding in patchy perennial ryegrass (Lolium perenne L.) monocultures was investigated. Heterogeneity or patchiness was created by manipulating (1) the nutritional content of ryegrass, (2) parameters of sward structure e.g. sward height, pseudostem and lamina length, and tiller density, and (3) brightness of ryegrass relative to the background sward. Patches were either fertilised turves transplanted into paddock swards or were created in situ by local fertilisation, trimming etc. The backgr

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20

Wiltshire, J. J. J. "The use of the growth regulator triapenthenol in seed crops of Lolium perenne L." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233613.

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21

Damrongkool, Prapassorn. "Sequence and distribution of the Neotyphodium lolli peptide synthetase gene lpsA." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2927.

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Thesis (Ph. D.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains ix, 134 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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22

Tomaszewski, Celine. "Fine mapping of biomass yield quantitative trait loci in Lolium perenne L." Thesis, University of Leicester, 2012. http://hdl.handle.net/2381/10827.

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Biomass yield is a complex quantitative trait controlled by many environmental and genetic factors. Therefore its study relies on QTL mapping. In a precursor study, a genetic map of L. perenne was constructed on an inbred-derived F2 population and three major biomass QTL have been found on linkage groups (LGs) 2, 3 and 7. In this study, a fine map of the QTL positions was developed by mapping additional ryegrass specific SSR, rice Sequence Tagged Site and Diversity Array Technology markers. A total of 153 markers were added to the existing map leading to a map density of 3.5 cM. The QTL positi

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23

Lowes, Wendy. "A molecular analysis of the factors affecting frost tolerance in Lolium perenne." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299054.

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24

Devereaux, Alissa Corrine. "Transformation and overexpression of a MnSOD gene in perennial ryegrass (Lolium perenne L.)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ61891.pdf.

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25

Xu, Xiangming. "The genetic assessment of inbred lines and their hybrids in Lolium perenne L." Thesis, Aberystwyth University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283766.

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26

Morgan, Sarah Ann. "Relationships between fatty acids, lipids and other characteristics of perennial ryegrass (Lolium perenne)." Thesis, Aberystwyth University, 2015. http://hdl.handle.net/2160/faf97ebd-42b4-447d-bda5-71d41d14c031.

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Production and consumption of ruminant products is partly being held accountable for the increasing global challenges of human health and climate change. Also, increasing demand for food, feed and fuel is placing growing pressure on land availability. One area under investigation in response to these challenges is fatty acid content of forages. This thesis sets out to investigate the variation and relationships between fatty acids, lipids, chlorophyll and other nutritional aspects of perennial ryegrass. Additionally, it will investigate alternative methods to predict fatty acids in forage. The

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27

Alcántara, Mondragón Viridiana. "Evaluación de una pradera de ryegrass perene (Lolium perenne) bajo pastoreo continuo por corderos en crecimiento y finalización en Primavera-Verano." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68549.

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La población humana mundial sigue aumentando con gran rapidez, en México para 2017 hay una población de 123.5 millones, y, de igual manera, se incrementa la demanda de productos pecuarios como la leche, carne y huevo; de tal forma que las empresas dedicadas a la agricultura y ganadería coinciden en la necesidad de lograr una mayor eficiencia productiva y rentabilidad económica; el caso de la ovinocultura no es la excepción; empero, esta actividad tiene la opción de producir a base de forrajes usados en condiciones de pastoreo, lo cual le permite disminuir los costos de producción, resultando e

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28

Renner, Christine Joan. "Interactive effects of sulphur dioxide, nitrogen dioxide and the winter environment on Lolium perenne." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254029.

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29

Bababe, B. "Soil hydraulic conductivity and its influence on water status of Lolium perenne, L. seedlings." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376253.

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30

Canunayon, Meraluna. "Identification of QTL for leaf senescence related traits in perennial ryegrass (Lolium perenne L.)." Thesis, Aberystwyth University, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.704755.

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31

Hesse, Uljana. "Untersuchungen zur Endophytbesiedelung von Gräserökotypen und zu Symbioseeffekten durch Neotyphodium lolii in Lolium perenne-Genotypen hinsichtlich Stresstoleranz und Ertragsmerkmale." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965087298.

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32

Zbib, Nasrallah. "Toxicité de la fétuque élevée et du ray-grass anglais endophytés sur ovins." Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0101/document.

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Les associations symbiotiques entre différentes espèces de champignon du genre Epichloë et des plantes fourragères sont à l’origine de la production de mycotoxines responsables, dans certains pays, de toxicoses du bétail et de pertes économiques. Le développement de d’E. coenophiala dans la fétuque, qui est associé à la production d’ergovaline, est responsable de « fescue foot disease » alors que la présence d’E. festucae var. lolii dans le ray-grass anglais, qui est accompagnée d’une production de lolitrem B, est responsable du « ryegrass staggers » et de la production d’ergovaline, dont les

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33

Migault, Vincent. "Insertion de la morphogenèse racinaire dans L grass, un modèle structure-fonction de graminées fourragères." Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2254/document.

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Un modèle de morphogenèse aérienne de graminées fourragères, nommé L grass, a été développé lors de travaux précédents. Le but de la thèse est de proposer une méthode d'insertion de la morphogenèse racinaire dans ce modèle afin de tenir compte de l'impact des ressources telluriques sur la structure et le fonctionnement de la plante.Un simulateur de plante entière de ray-grass anglais (Lolium perenne L.) incorporant (i) des règles d'autorégulation de l'architecture aérienne, (ii) le développement architecturé du système racinaire, (iii) des processus de coordination entre les parties aérienne e

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34

Murphy, P. M. "Genetic variation in crown rust (Puccinia coronata) and its interactions with perennial ryegrass (Lolium perenne)." Thesis, Queen's University Belfast, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273155.

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35

Carlile, Eloise. "Studies on genes and methods for transforming the nucleus and plastids of Lolium perenne L." Thesis, University of Manchester, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687415.

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Lolium perenne L. (perennial ryegrass) is the most widely used turf and forage grass grown in temperate climates throughout the world, commonly found on sports grounds, and in cattle and sheep farming systems. The introduction of new cultivars of L. perenne with improved agricultural performance has relied on traditional breeding methods. Nuclear and plastid transformation provides an alternative approach to obtain plants with desired phenotypes, some of which would be difficult to achieve by classical breeding.

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36

Podkówka, Lucyna. "Wartość pokarmowa oraz ocena przydatności do zakiszania zielonek z Phleum pratense, Lolium perenne i Festulolium." Rozprawa doktorska, [Nakł.aut.], 2001. http://dlibra.utp.edu.pl/Content/270.

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37

Ansell, Kevin J. "How does increased COâ†2 concentration effect leaf photosynthesis at low temperatures in Lolium perenne." Thesis, University of Essex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394185.

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38

Putta, Karthik. "Physical mapping of EPSPS gene copies in glyphosate resistant Italian ryegrass (Lolium perenne ssp. multiflorum)." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/36183.

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Master of Science<br>Department of Agronomy<br>Randall S. Currie<br>Mithila Jugulam<br>Italian ryegrass (Lolium perenne L. ssp. multiflorum (Lam.) Husnot), one of the problem weeds of the US, evolved resistance to multiple herbicides including glyphosate due to selection in Arkansas (AR). Glyphosate is a 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) inhibitor and amplification of EPSPS gene, the molecular target of glyphosate confers resistance to this herbicide in several weed species, including Italian ryegrass from AR. The objective of this study was to determine the expression of EPS

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39

Reinholz, Johannes. "Analytische Untersuchungen zu den Alkaloiden Lolitrem B und Paxillin von Neotyphodium lolii und Lolium perenne, in vivo und in vitro." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961553723.

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40

Repussard, Céline. "Etude des facteurs de production d’alcaloïdes toxiques par des Epichloë endophytes de graminées fourragères dans le Sud de la France." Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0104/document.

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Les associations symbiotiques Epichloë- graminées fourragères les plus étudiées concernent le ray grass anglais (Lolium perenne) avec Epichloë festucae var. lolii et la fétuque élevée (L. arundinaceum) avec E. coenophiala. Ces champignons peuvent synthétiser des alcaloïdes toxiques pour le bétail tels que l’ergovaline et le lolitrème B. Mon travail de thèse a consisté à explorer les facteurs en lien avec la production de mycotoxines dans les graminées. Pour cela différentes études ont été conduites sur la fétuque et le ray grass afin de révéler i) la présence de souches endophytées toxinogènes

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41

Monnet, Fabien. "Tolerance a un exces de zinc et activite photosynthetique de lolium perenne infecte ou non par neotyphodium lolii; epuration des eaux residuaires urbaines associee a la production de plantes horticoles (doctorat environnement,biologie et physiologie vegetale)." Clermont-Ferrand 1, 2001. http://www.theses.fr/2001CLF1MM24.

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42

Araneda, Calderón Mariana Alejandra. "Comparación estacional del almacenaje de carbono total y carbono orgánico en tres cultivares de ballica perenne (Lolium perenne L.) y su relación con la fotosínteis." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/150860.

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Memoria para optar al Título Profesional de Ingeniera Agrónoma<br>Las emisiones de dióxido de carbono (CO2) pueden conducir a un aumento de la temperatura ambiental global e influir en el cambio climático, lo cual se ha convertido en un problema de discusión global. Los céspedes urbanos pueden mitigar estos efectos, ya que capturan el CO2 mediante el almacenamiento de carbono en los sustratos y la vegetación. El objetivo del presente estudio fue comparar estacionalmente la habilidad de secuestro de carbono y los parámetros fotosintéticos de tres cultivares de ballica perenne (Lolium pere

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43

Butler, Tony. "Physiological effects of drought on perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinacea Schreb.)." Lincoln University, 2008. http://hdl.handle.net/10182/1098.

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The Canterbury plains are frequently exposed to summer drought and climate predictions forecast that the severity and frequency of summer drought will increase. The most commonly used pasture grass, perennial ryegrass (Lolium perenne L.), is drought sensitive. One possible method to maintain sward dry matter (DM) production under water stress is to use an alternative grass species such as tall fescue (Festuca arundinacea Schreb.). The objective of this research was to compare summer DM production of monoculture swards of perennial ryegrass and tall fescue under various seasonal drought regi

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44

Mellon, R. M. "The development of thermogravinetric tools for assessing herbage quality of perennial rye grass (Lolium perenne L.)." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.579753.

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The aim of this study was to evaluate herbage quality of perennial ryegrass Lolium perenne using thermogravimetry. Both Dynamic and isothermal thermal analyses were investigated over a range of heating rates to first establish any association between thermal profiles and dry matter digestibility values. The results suggested thermal methods could be used to predict dry matter digestibility (in vitro DMD) and identified the best experimental protocols for further study. Further investigations were carried out to predict DMD values using discrete and continuous TG weight loss data streams by mul

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45

Hamill, M. E. "Development of new characteristics for identification and classification of cultivars of perennial ryegrass (Lolium perenne L.)." Thesis, Queen's University Belfast, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373531.

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46

Silva, Jose Carlos Sousa. "The response of Lolium perenne L. S23 to light and temperature studied from experiment and modelling." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/12937.

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The growth of <I>Lolium perenne </I>S23 was studied under different conditions of temperature and shade in laboratory and in garden plots. Data on plant and leaf dry weight were used to establish simple growth models. In the laboratory three light intensities (330, 165 and 85 μmol m<SUP>-2</SUP>s<SUP>-1</SUP>) were combined with temperature regimes of 10/10, 15/10, 15/15, 20/10, 20/15 and 20/20 <SUP>o</SUP>C in a 16h-photoperiod. Harvests were made when each of the first three leaves were fully expanded. In garden plots light quantity, light quality, R:FR ratio, temperature and total rainfall

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47

Erley, Gunda Schulte auf'em. "Die Stickstoff- und Kohlenstoffallokation von Gräsern mit unterschiedlicher Wachstumsdynamik (Lolium Perenne L. und Festuca rubra L.)." Bonn : Rheinische Friedrich-Wilhelms-Universität, Institut für Pflanzenbau, Lehrstuhl für Allgemeinen Pflanzenbau, 2001. http://hss.ulb.uni-bonn.de:90/ulb_bonn/diss_online/landw_fak/2001/schulte_auf_m_erley_gunda/0200.pdf.

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Care, Debbie Anne. "Effect of some external factors on root hair demography in Trifolium repens L. and Lolium perenne L." Thesis, University of Auckland, 1999. http://wwwlib.umi.com/dissertations/fullcit/9940677.

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Light microscopy, low ionic strength solution culture and image analysis methods were used to make detailed measurements on root hair populations of different genotypes of white clover (Trifolium repens L.) and ryegrass (Lolium perenne L.). A model of root hair population structure was developed and validated that will facilitate research on root hairs of these species. Diagrams were drawn of the root hair length and frequency on entire root systems. The distributions of root hairs on these diagrams often differed from textbook diagrams of root hairs because root hair length and frequency v

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49

Swieter, Anita [Verfasser], and Sylvia [Akademischer Betreuer] Moenickes. "Modellgestützte Bestimmung des optimalen Schnittzeitpunkts von Lolium perenne-Sorten für die Biogasproduktion / Anita Swieter ; Betreuer: Sylvia Moenickes." Braunschweig : Technische Universität Braunschweig, 2015. http://d-nb.info/1175819840/34.

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Crowe, Samuel Richard. "The response of Lolium perenne and Holcus lanatus to shading in relation to a silvopastoral agroforestry system." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333809.

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