Show simple item record Christopher J. en_US Lesley B. en_US Andrew J. en_US Mervyn O. en_US 2009-11-02T11:30:09Z 2009-11-02T11:30:09Z 2001 en_US
dc.identifier en_US
dc.identifier.citation Pollock , C J , Turner , L B , Cairns , A J & Humphreys , M O 2001 , ' Comparison of growth and carbohydrate accumulation in seedlings of two varieties of Lolium perenne ' Journal of Plant Physiology , vol 158 , no. 7 , pp. 891-897 . , 10.1078/0176-1617-00320 en_US
dc.identifier.other PURE: 126233 en_US
dc.identifier.other dspace: 2160/3363 en_US
dc.description.abstract Following the identification of suitable traits, the genetic basis of physiological processes such as growth and carbohydrate accumulation can be examined with QTL analysis. Seedling growth was studied in two varieties of perennial ryegrass (Lolium perenne L.) at two stages (following germination and after defoliation) during transitions from reserve-driven growth to current-photosynthate-driven growth. Total water-soluble carbohydrate contents of leaf blades, sheaths and roots were also measured. Aurora (a high-sugar variety) was capable of rapid growth, and grew faster than Perma when growth was reserve-driven. Perma had a low reserve carbohydrate content and grew slowly when growth was reserve-driven. When growth was fuelled by current photosynthate, Perma grew faster than Aurora and replaced its carbohydrate reserves more rapidly. Changes in growth rate appeared to precede changes in water-soluble carbohydrate content. It is concluded that the extent of water-soluble carbohydrate accumulation was inversely related to constitutive growth rate, and that neither process appeared to be limited by photosynthate supply. Traits amenable to QTL analysis are identified. en_US
dc.format.extent 7 en_US
dc.relation.ispartof Journal of Plant Physiology en_US
dc.subject germination en_US
dc.subject growth en_US
dc.subject Lolium perenne en_US
dc.subject perennial ryegrass en_US
dc.subject regrowth en_US
dc.subject water-soluble carbohydrate en_US
dc.title Comparison of growth and carbohydrate accumulation in seedlings of two varieties of Lolium perenne en_US
dc.contributor.pbl Institute of Biological, Environmental and Rural Sciences en_US

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