Acclimation to freezing temperatures in perennial ryegrass (Lolium perenne) |
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Authors: | Judith Harrison Claire Tonkinson Colin Eagles Christine Foyer |
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Affiliation: | (1) Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SY23 3EB Ceredigion, UK |
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Abstract: | The increasing demands being placed on natural grasslands in the era following the appearance of Bovine Spongiform Encephalitis require that forage crops provide a reliable extended season of growth, combined with good winter survival to ensure sward longevity. The ability to tolerate sub-zero temperatures is integral to the survival of perennial forages. Since the development of freezing tolerance is crucial to the survival and productivity of over-wintering crops, forage breeding programmes require an improved understanding of the individual characteristics that contribute to tolerance to sub-zero temperatures. Photosynthesis, carbohydrate content and changes in protein composition were investigated in two varieties of Lolium perenne which differ in their response to growth at low temperature. |
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Keywords: | Carbohydrates Freezing Lolium perenne Photosynthesis Proteins |
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