Catalogo Articoli (Spogli Riviste)


Overwintering and growing season dynamics of Trifolium repens L. in mixture with Lolium perenne L.: A model approach to plant-environment interactions
Wachendorf, M; Collins, RP; Elgersma, A; Fothergill, M; Frankow-Lindberg, BE; Ghesquiere, A; Guckert, A; Guinchard, MP; Helgadottir, A; Luscher, A; Nolan, T; Nykanen-Kurki, P; Nosberger, J; Parente, G; Puzio, S; Rhodes, I; Robin, C; Ryan, A; Staheli, B; Stoffel, S; Taube, F; Connolly, J;
Univ Kiel, Inst Crop Sci & Plant Breeding Grass & Forage Sci, D-24098 Kiel, Germany Univ Kiel Kiel Germany D-24098 Grass & Forage Sci, D-24098 Kiel, Germany Univ Coll Dublin, Dept Stat, Dublin 4, Ireland Univ Coll Dublin Dublin Ireland 4 l Dublin, Dept Stat, Dublin 4, Ireland Inst Grassland & Environm Res, Aberystwyth SY23 3EB, Dyfed, Wales Inst Grassland & Environm Res Aberystwyth Dyfed Wales SY23 3EB fed, Wales Univ Wageningen & Res Ctr, Dept Plant Sci Crop & Weed Ecol, NL-6709 RZ Wageningen, Netherlands Univ Wageningen & Res Ctr Wageningen Netherlands NL-6709 RZ Netherlands SLU, Dept Ecol & Crop Prod Sci, SE-75007 Uppsala, Sweden SLU Uppsala Sweden SE-75007 ol & Crop Prod Sci, SE-75007 Uppsala, Sweden Dept Plantengenet Enveredeling, B-9090 Melle, Belgium Dept Plantengenet Enveredeling Melle Belgium B-9090 -9090 Melle, Belgium INRA, UMR Agron & Environm Ensaia, F-54505 Vandoeuvre Les Nancy, France INRA Vandoeuvre Les Nancy France F-54505 05 Vandoeuvre Les Nancy, France Inst Agr Res, Reykjavik, Iceland Inst Agr Res Reykjavik IcelandInst Agr Res, Reykjavik, Iceland ETH Zurich, Swiss Fed Inst Technol, Inst Plant Sci, CH-8092 Zurich, Switzerland ETH Zurich Zurich Switzerland CH-8092 t Sci, CH-8092 Zurich, Switzerland TEAGASC, Res Ctr, Athenry, Galway, Ireland TEAGASC Athenry Galway Ireland EAGASC, Res Ctr, Athenry, Galway, Ireland Agr Res Ctr Finland, FIN-50600 Mikkeli, Finland Agr Res Ctr Finland Mikkeli Finland FIN-50600 FIN-50600 Mikkeli, Finland Aziende Sperimentali & Dimostrat Prov Pordenone, Serv Agr, I-33170 Pordenone, Italy Aziende Sperimentali & Dimostrat Prov Pordenone Pordenone ItalyI-33170 Tech Univ Munich, Chair Grassland Sci, D-85350 Freising Weihenstephan, Germany Tech Univ Munich Freising Weihenstephan Germany D-85350 stephan, Germany
Titolo Testata:
, volume: 88, anno: 2001,
pagine: 683 - 702
Trifolium repens; white clover; AberHerald; Huia; Lolium perenne; perennial ryegrass; competition; overwintering; winter hardiness; spring growth; clover proportion; plant morphology; carbohydrate reserves;
Tipo documento:
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Indirizzi per estratti:
Indirizzo: Wachendorf, M Univ Kiel, Inst Crop Sci & Plant Breeding Grass & Forage Sci, Olshaussenstr 40, D-24098 Kiel, Germany Univ Kiel Olshaussenstr 40 Kiel Germany D-24098 el, Germany
M. Wachendorf et al., "Overwintering and growing season dynamics of Trifolium repens L. in mixture with Lolium perenne L.: A model approach to plant-environment interactions", ANN BOTANY, 88, 2001, pp. 683-702


In attempting to increase the reliability of clover contribution in clove/ryegrass systems it is important to understand the roles of (1) specific traits of the clover genotype (2) climate and (3) their interactions in determining clover behaviour in swards. Overwintering and spring growth of whiteclover (cultivars AberHerald and Huia) grown in binary mixtures with perennial ryegrass were measured at 12 European sites ranging in latitude from Reykjavik, Iceland (64 degrees 30' N) to Pordenone, Italy (46 degrees 30' N). In the overwintering period, tiller density of the grass was assessed anddetailed morphological and chemical measurements were made on the clover at each sampling time. During the growing season, the clover contribution tototal available biomass was recorded, Detailed climatic data were available at all sites. The annual growth cycle of swards was divided into four functional periods (spring, summer, autumn and winter). Within each functionalperiod community responses were modelled. The models incorporated independent biotic variables characterizing each community within each site at the start of the period and independent variables characterizing the climate ateach site during the period. The models were linked dynamically by taking,as response variable(s) for a functional period. the independent biotic variable(s) of the succeeding period. In general, the modelling strategy was successful in producing a series of biologically meaningful linked models. Essential prerequisites for this were (a) the establishment of a well-devised common protocol prior to the experiment and (b) the extensive gradients of climatic and other variables obtained by using numerous sites, AberHerald generally performed as well as. or better than, Hula throughout the annual cycle across the range of climatic conditions encountered, and especiallyunder low temperature conditions in winter and autumn. Clover leaf area index appeared to be a key variable in determining clover performance over winter and through the following growing season. Grass tiller density had a strong negative effect on clover content in spring but only at low temperatures, This emphasizes the importance of a high clover leaf area index in autumn as the main biotic factor related to spring clover content in milder conditions. The importance of climatic variables in the models is their use in explaining the reliability of the contribution of clover in clover,: ryegrass systems. Temperature was the primary climatic determinant of clover response in all periods, having a direct effect on clover content and leaf area index or mediating the effect of the associate species. Radiation strongly influenced Clover dynamics during winter and spring but not in the otherperiods, possibly because it was confounded with the effect of higher temperature. Precipitation was positively related to clover growth during spring and autumn and was related to tiller density in a complex manner during autumn and winter. (C) 2001 Annals of Botany Company.

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Documento generato il 27/09/20 alle ore 12:42:52