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dc.contributor.author Marshall, Athole H.
dc.contributor.author Abberton, Michael T.
dc.contributor.author Michaelson-Yeates, Terry P. T.
dc.contributor.author Rhodes, Ian
dc.contributor.author Williams, T. Andy
dc.date.accessioned 2009-11-04T10:46:37Z
dc.date.available 2009-11-04T10:46:37Z
dc.date.issued 2009-11-04
dc.identifier.citation Marshall , A H , Abberton , M T , Michaelson-Yeates , T P T , Rhodes , I & Williams , T A 2009 , ' Drought tolerance of interspecific hybrids between T. repens and T. ambiguum ' pp. 10-21 . en
dc.identifier.other PURE: 135450
dc.identifier.other dspace: 2160/3419
dc.identifier.uri http://hdl.handle.net/2160/3419
dc.description Marshall, A. H., Abberton, M. T., Michaelson-Yeates, T. P. T., Rhodes, I., Williams, T. A. (2001). Drought tolerance of interspecific hybrids between T. repens and T. ambiguum. Grassland Ecosystems: An Outlook into the 21st Century. Proceedings 19th International Grassland Congress, Sao Paulo, Brazil, 10-21 February 2001, Gomide, J. A.Mattos, W. R. S.Carneiro da Silva, S. Fundacao Estudos Agrarios Luiz Queiroz (Fealq), Piracicaba, 528-529 Gomide, J. A.; Mattos, W. R. S.; Carneiro da Silva, S. (eds.) en
dc.description.abstract Hybrids between the stolonifeous white clover (Trifolium repens L., 2n=4x=32) and rhizomatous Caucasian clover (T. ambiguum M.Bieb, 2n=4x=32) have been produced. A backcross 2 (BC2) generation with white clover as the recurrent parent combines the growth habit of both parent species with the objective of increasing the persistency of large leaved T. repens varieties under grazing. T. ambiguum is more drought tolerant than T. repens. The drought tolerance of the hybrids in comparison with the parental species was compared in deep soil bins over a four week drought cycle. Soil moisture content, leaf relative water content (RWC), and leaf water potential were measured on plants subjected to drought and those watered normally and maintained at field capacity. T. ambiguum and the backcross hybrids were able to maintain a higher leaf RWC and leaf water potential than T. repens at comparable levels of soil moisture. The dry matter production of the hybrids and parental species was also compared in field plots sown with a perennial ryegrass companion. In the first harvest year, under a cutting regime, the yield of T. repens was highest and T. ambiguum lowest with the hybrids intermediate between the parents, with the BC2 approaching the yield of T. repens. These hybrids will be evaluated over further years and under grazing. The implications of these results for T. repens germplasm improvement programmes are discussed. en
dc.format.extent 12 en
dc.language.iso eng
dc.relation.ispartof en
dc.title Drought tolerance of interspecific hybrids between T. repens and T. ambiguum en
dc.type Text en
dc.type.publicationtype Conference paper en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Non peer reviewed en


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