http://espace.library.uq.edu.au/ The University of Queensland en Fez http://blogs.law.harvard.edu/tech/rss http://espace.library.uq.edu.au/view/UQ:194064 2010-01-28T00:00:00Z Longworth, J. W. og Brown, C. G. og Waldron, S. A. http://espace.library.uq.edu.au/view/UQ:277464 2012-07-11T00:00:00Z Fujinuma, R. og Matsumura, S. http://espace.library.uq.edu.au/view/UQ:252552 2011-09-20T00:00:00Z 于東 Yu, Dong og 林躍偉 Lin, Yue-wei og 陳桂星 Chen, Gui-xing og 方忠祥 Fang, Zhong-xiang og 葉興乾 Ye, Xing-qian og 許荷法 Xu, He-fa http://espace.library.uq.edu.au/view/UQ:115904 Effects of exogenously applied abscisic acid (ABA) on ethylene production rate, phenylalanine ammonia-lyase ( PAL) enzyme activity, and anthocyanin and phenolic concentrations in harvested strawberry cv. Everest fruit were evaluated. Colouration and firmness were also assessed on fruit held for 3 days at 20 degreesC. ABA treatment accelerated fruit colour and softening. Treatment with 10(-5) or 10(-4) mol ABA l(-1) stimulated ethylene production. Anthocyanin and phenolic contents and PAL activity increased during storage, but more rapidly in ABA treated fruit. As a result, red colour development was accelerated. Endogenous ABA may play a role in strawberry fruit colour development during ripening through up-regulation of ethylene production and PAL activity. 2007-10-17T00:00:00Z Jiang, Yueming og Joyce, Daryl C. http://espace.library.uq.edu.au/view/UQ:66722 2007-08-15T00:00:00Z Allen, M. og Kinch, J. og Werner, T. http://espace.library.uq.edu.au/view/UQ:69640 2007-08-14T00:00:00Z Fischer, K. S. og Atlin, G. N. og Blum, A. og Fukai, S. og Lafitte, R. og Mackill, D. http://espace.library.uq.edu.au/view/UQ:150784 2008-06-06T00:00:00Z Peace, C. og Vithanage, V. og Anderson, K. L. og Carroll, B. J. og Turnbull, C. G. http://espace.library.uq.edu.au/view/UQ:116078 The plant growth regulator abscisic acid induces stomatal closure, which can reduce transpiration rate and extend vase life of cut flowers by maintaining a positive water balance. Analytical-reagent grade abscisic acid is, however, expensive. In this work, the effects of 2 potentially inexpensive synthetic analogues of abscisic acid were studied as to their effects on cut Baccara roses. Abscisic acid and its analogues PBI-365 and PBI-429 reduced transpiration and helped to increase fresh weight during the first few days of vase life. However, the reduction in transpiration rate brought about by abscisic acid and the analogues did not alter vase life. Sucrose in the vase solution at concentrations of 2 and 4% increased vase life of cut Baccara roses. However, the highest sucrose concentration ( 4%) caused leaf crisping, thereby reducing the quality of the flower stems. Abscisic acid and the analogue PBI-365 reduced this phytotoxicity by induction of stomatal closure and reduction of vase solution sucrose flux into the leaves. 2007-10-17T00:00:00Z Pompodakis, NE og Joyce, DC http://espace.library.uq.edu.au/view/UQ:236635 2011-03-15T00:00:00Z Ahmad, Iftikhar og Joyce, Daryl C. http://espace.library.uq.edu.au/view/UQ:247165 2011-09-05T00:00:00Z Puan, Chong Leong og Goldizen, Anne W. og Zakaria, Mohamed og Hafidzi, Mohd N. og Baxter, Greg S. http://espace.library.uq.edu.au/view/UQ:196428 Agri-food chains are complex systems involving multiple multifaceted firms usually working together within specific industry sectors (e.g. grains, beef, wool, dairy) to satisfy an increasingly globalised market demand for high value food products. In so doing, the groupings of companies involved in an agri-food chain undertake activities that require multidimensional inter-organisational and cross organisational decision-making in the process of adding value to a raw commodity product through the production, manufacturing and distribution stages of the chain. Additional complexity is added by climate variability which impacts randomly and unpredictably on decision making in every component of the chain. The work outlined in this paper is a pilot investigation looking at a number of approaches to conceptualising and modelling an agri-food chain and its related decision making processes to better evaluate the impact and effects of that decision making and associated information flows across the components of the agri-food chains. The modelling approaches were (i) a multimedia model initially explored as an opportunity to visualise supply and value chain issues for educational purposes; (ii) an agent based model (ABM) using deterministic rules to architecturally synthesise a supply chain, and (iii) a baysian belief network (BBN) which we discuss as an approach for looking at the likelihood of certain decisions being made under certain scenarios. 2010-02-23T00:00:00Z Bryceson, K. P. og Smith, C. S. http://espace.library.uq.edu.au/view/UQ:95970 2007-08-24T00:00:00Z Spies, A. og Wegener, M. K. og Chamala, S. og Beeton, R.J.S. http://espace.library.uq.edu.au/view/UQ:174573 2009-04-08T00:00:00Z Cici, S-Zahra-Hosseini og Adkins, Steve og Hanan, Jim http://espace.library.uq.edu.au/view/UQ:99466 2007-08-24T00:00:00Z Bryden, W. L. og Pym, R. A.E. og Annison, E.F. http://espace.library.uq.edu.au/view/UQ:60301 2007-08-14T00:00:00Z Blackshaw, J. K. http://espace.library.uq.edu.au/view/UQ:164849 This paper analyzes farmer decisions regarding acceptance and repayment of agricultural credit in Lombok, Indonesia. A survey was conducted during July 2001- March 2002 in Central Lombok, where the current KKP government credit scheme is provided to agricultural producers. Three villages within the regency were sampled, representing various repayment rates of government credit. Data were collected using face-to-face, semi-structured interviews with 65 farmers who had made use of government or other sources of agricultural credit. Capital possession was found to be the starting point for farmers’ decision-making in relation to credit use. As long as farmers had their own capital, they tended to avoid using credit, perceiving that credit from any source was risky. Farmers preferred to apply for government credit, rather than from private sources, because it had lower interest rates, a more suitable repayment schedule, and was considered less risky. In some situations however, private credit was preferred because of its simplicity and instant availability. In credit repayment, farmers’ behavior was strongly influenced by their capability, character, and motivations, and these factors could be inter-connected. The findings have some implications for credit distribution, monitoring, repayment collection, and education and extension for clients. 2009-02-19T00:00:00Z Sjah, S. J. og Cameron, D. C. og Russell, I. http://espace.library.uq.edu.au/view/UQ:67707 2007-08-15T00:00:00Z Sjah, T. og Cameron, D. C. og Russell, I. W. http://espace.library.uq.edu.au/view/UQ:290902 Many important crop species have genomes originating from ancestral or recent polyploidisation events. Multiple homoeologous gene copies, chromosomal rearrangements and amplification of repetitive DNA within large and complex crop genomes can considerably complicate genome analysis and gene discovery by conventional, forward genetics approaches. On the other hand, ongoing technological advances in molecular genetics and genomics today offer unprecedented opportunities to analyse and access even more recalcitrant genomes. In this review, we describe next-generation sequencing and data analysis techniques that vastly improve our ability to dissect and mine genomes for causal genes underlying key traits and allelic variation of interest to breeders. We focus primarily on wheat and oilseed rape, two leading examples of major polyploid crop genomes whose size or complexity present different, significant challenges. In both cases, the latest DNA sequencing technologies, applied using quite different approaches, have enabled considerable progress towards unravelling the respective genomes. Our ability to discover the extent and distribution of genetic diversity in crop gene pools, and its relationship to yield and quality-related traits, is swiftly gathering momentum as DNA sequencing and the bioinformatic tools to deal with growing quantities of genomic data continue to develop. In the coming decade, genomic and transcriptomic sequencing, discovery and high-throughput screening of single nucleotide polymorphisms, presence-absence variations and other structural chromosomal variants in diverse germplasm collections will give detailed insight into the origins, domestication and available trait-relevant variation of polyploid crops, in the process facilitating novel approaches and possibilities for genomics-assisted breeding. 2013-02-10T00:38:53Z Edwards, David og Batley, Jacqueline og Snowdon, Rod J. http://espace.library.uq.edu.au/view/UQ:136289 2008-04-24T00:00:00Z Love, Christopher G. og Edwards, David http://espace.library.uq.edu.au/view/UQ:183645 2009-09-04T00:00:00Z Hockings, M. og Cook, C. N. og Carter, R. W. og James, R. http://espace.library.uq.edu.au/view/UQ:63340 2007-08-14T00:00:00Z Dalzell, S. A. og Kerven, G. L. http://espace.library.uq.edu.au/view/UQ:8294 Two commercial laser dendrometers were tested under controlled and field conditions, and contrasted with alternative instruments. Testing focused on height measurement, but also considered distance and remote diameter measurements. Both laser instruments gave very precise estimates, but showed some bias. Users of these and other 'high-tech' instruments are reminded that precision is not synonymous with accuracy. Users should not become complacent about the sub-millimetre readout, but should calibrate instruments to examine if users' accuracy requirements are satisfied. Instruments may need to be re-calibrated each measurement season and after any mishandling. 2006-06-02T00:00:00Z Skovsgaard, J.P. og Johannsen, V.K. og Vanclay, Jerome K http://espace.library.uq.edu.au/view/UQ:75457 Scorpion toxins are common experimental tools for studies of biochemical and pharmacological properties of ion channels. The number of functionally annotated scorpion toxins is steadily growing, but the number of identified toxin sequences is increasing at much faster pace. With an estimated 100,000 different variants, bioinformatic analysis of scorpion toxins is becoming a necessary tool for their systematic functional analysis. Here, we report a bioinformatics-driven system involving scorpion toxin structural classification, functional annotation, database technology, sequence comparison, nearest neighbour analysis, and decision rules which produces highly accurate predictions of scorpion toxin functional properties. (c) 2005 Elsevier Inc. All rights reserved. 2007-08-15T00:00:00Z Tan, PTJ og Srinivasan, KN og Seah, SH og Koh, JLY og Tan, TW og Ranganathan, S og Brusic, V http://espace.library.uq.edu.au/view/UQ:70460 The Polynesia Mana Node of the southeast and central Pacific contains 7 independent or autonomous countries or territories with only 6,000 km2 of land on 347 islands, but surrounded by 12 million km2 of EEZ. These seas contain 13,000 km2 of coral reefs as the main natural ecosystem providing food resources and opportunities for development, especially for tourism and pearl culture for 500,000 inhabitants. During the 19th and first half of the 20th centuries, there was major exploitation by the colonial powers of mother-of-pearl oysters for the button industry, as well as guano, sandalwood and trepang. The Polynesian people were largely involved in a subsistence economy and all coral reefs and lagoons were healthy. During the last two decades of the 20th, all countries experienced rapid development and urbanization, rising populations, and some increased agriculture. These developments were limited to a few islands of each country (i.e. 15 islands amongst the 347) with resulting degradation of the coral reefs around these sites. The other islands remained mostly uninhabited and pristine, and continued with a subsistence economy. Generally, there was more damage to the coral reefs through natural events such as cyclones and coral bleaching, than by human activities. There is however, an urgent need to combat the threats on some islands from increased sedimentation, over-fishing, dredging and nutrient pollution. 2007-08-14T00:00:00Z Vieux, C. og Aubanel, A. og Axford, J. C. og Chancerelle, Y. og Fisk, D. og Holland, P. og Juncker, M. og Kirata, T. og Kronen, M. og Osenberg, C. og Pasisi, B. og Power, M. og Salvat, B. og Shima, J. og Vavia, V. http://espace.library.uq.edu.au/view/UQ:134939 2008-04-09T00:00:00Z Dieters, Mark og Nikles, D. G. og Keys, M. http://espace.library.uq.edu.au/view/UQ:107718 2007-08-27T00:00:00Z http://espace.library.uq.edu.au/view/UQ:174478 2009-04-08T00:00:00Z Herbohn, J. L. og Harrison, S. R. og Gregorio, N. og Vanclay, J. og Smith, C. S. og Dargusch, P. og Mangaoang, E. og Mercado, J. http://espace.library.uq.edu.au/view/UQ:107963 2007-08-27T00:00:00Z http://espace.library.uq.edu.au/view/UQ:107964 2007-08-27T00:00:00Z http://espace.library.uq.edu.au/view/UQ:81341 Compounds that activate host plant defence responses potentially offer socio-environmentally sound alternative methods for disease control. In a series of glasshouse trials over 2 years, pre-harvest sprays with acibenzolar-S-methyl (ASM) and methyl jasmonate (MeJA) were tested for suppression of post-harvest infection of cut Freesia hybrida L. flowers by Botrytis cinerea. For the ASM treatments, variability in reducing the incidence of B. cinerea disease was observed between years freesia varieties, incubation temperatures and ASM concentrations. In the first year, the greatest reductions in lesion numbers on ASM-treated var. 'Cote d'Azur' were recorded using 2.86 mM ASM. For three different post-harvest temperature regimes, the relative reductions in lesion numbers, compared to untreated controls, were 45% at 5 degrees C, 40% at 12 degrees C and 30% at 20 degrees C, respectively. In the second year, lesion numbers were most reduced using 1.43 mM ASM to treat freesia var. 'Dukaat' flowers. Here, the relative reductions were to 44% at 5 degrees C, 26% at 12 degrees C and 51% at 20 degrees C. MeJA treatments were, in general, more consistently effective than ASM treatments in reducing lesion numbers and lesion diameters on cut freesia flowers. MeJA-treated (0.2 mM) freesia flowers (var. 'Dukaat') incubated at 20 degrees C showed relative reductions of 62%, and 45% for lesion number and lesion diameter, respectively. The differing efficacy between ASM and MeJA treatments could be attributed to their differential abilities to induce the salicylic acid (SA)-mediated vs. the jasmonic acid (JA)-mediated host defence pathways, respectively. 2007-08-15T00:00:00Z Darras, AI og Joyce, DC og Terry, LA http://espace.library.uq.edu.au/view/UQ:97957 2007-08-24T00:00:00Z Saffigna, P. G. http://espace.library.uq.edu.au/view/UQ:96571 2007-08-24T00:00:00Z Saffigna, P. G. og Hey, K. M. http://espace.library.uq.edu.au/view/UQ:96569 2007-08-24T00:00:00Z Saffigna, P. G. og Dale, P. http://espace.library.uq.edu.au/view/UQ:182140 Water is perhaps one of the most studied types of common-pool resource (CPR) goods. Its quality, however, has not been discussed as much in the CPR literature as its quantity. We examine the significance of studying water quality from a CPR perspective, and then analyze implications for the formulation of institutional arrangements to improve water quality. We illustrate with a case study in South East Queensland, Australia. This involves a rural catchment (watershed) that contributes high sediment and some nutrient loads to the Brisbane River, where it affects urban water quality and visual amenity, water treatment costs, and dredging costs at the port. The pollutants then threaten marine water quality and habitat values for threatened species in Moreton Bay, a marine protected area. We analyze the potential for a CPR understanding to enhance the design and financing of a water quality management regime. Rather than seeking to supplant conceptualizations of externalities as a basis for design of policy instruments, we propose arrangements that combine the CPR and externality concepts to offer a powerful logic and financial basis for collective management. Market-based instruments could facilitate downstream populations to help pay for catchment restoration in return for enjoyment of improved water quality resulting from strengthened ecosystem services, while associated non-market-based instruments could help all parties understand and expand their roles under a common-pool management regime. We argue that recognition of CPR attributes provides a logic for cooperation and co-investment between stakeholders who are in a position to affect, or are affected by, water quality in different parts of a large river system. 2009-09-03T00:00:00Z Sarker, Ashutosh og Ross, Helen og Shrestha, Krishna K. http://espace.library.uq.edu.au/view/UQ:182471 2009-09-03T00:00:00Z McKeon, Michael G. og Joyce, Daryl C. og Frith, Robert H. http://espace.library.uq.edu.au/view/UQ:230850 2011-03-02T00:00:00Z Altermann, E. og Kelly, W. og Leahy, S. og Lambie, S. og Janssen, P. H. og Zhang, L. og Klieve, A. og Ouwerkerk, D. og Morrison, M. og Attwood, G. http://espace.library.uq.edu.au/view/UQ:96770 2007-08-24T00:00:00Z MacCallum, C. A. og Johnston, S. D. og Blyde, D. http://espace.library.uq.edu.au/view/UQ:136428 Background: Molecular genetic maps provide a means to link heritable traits with underlying genome sequence variation. Several genetic maps have been constructed for Brassica species, yet to date, there has been no simple means to compare this information or to associate mapped traits with the genome sequence of the related model plant, Arabidopsis. Description: We have developed a comparative genetic map database for the viewing, comparison and analysis of Brassica and Arabidopsis genetic, physical and trait map information. This web- based tool allows users to view and compare genetic and physical maps, search for traits and markers, and compare genetic linkage groups within and between the amphidiploid and diploid Brassica genomes. The inclusion of Arabidopsis data enables comparison between Brassica maps that share no common markers. Analysis of conserved syntenic blocks between Arabidopsis and collated Brassica genetic maps validates the application of this system. This tool is freely available over the internet on http://bioinformatics.pbcbasc.latrobe.edu.au/cmap. Conclusion: This database enables users to interrogate the relationship between Brassica genetic maps and the sequenced genome of A. thaliana, permitting the comparison of genetic linkage groups and mapped traits and the rapid identification of candidate genes. 2008-04-28T00:00:00Z Lim, Geraldine A. C. og Jewell, Erica G. og Li, Xi og Erwin, Timothy A. og Love, Christopher og Batley, Jacqueline og Spangenberg, German og Edwards, David http://espace.library.uq.edu.au/view/UQ:128572 2008-02-18T00:00:00Z Rivas, Lucia og Dykes, Gary A. og Fegan, Narelle http://espace.library.uq.edu.au/view/UQ:111352 The leaf beetle genus Phratora L. (Coleoptera: Chrysomelidae) has been used to study the ecology of host plant chemicals in herbivore preference, and the evolution of host use in chemical defence. Phratora vulgatissima and P. vitellinae are sympatric species distributed widely across Europe. Their trophic niches are largely separate due to strong differences in their host feeding preference, but they have occasionally been recorded together, feeding on Salix burjatica'Germany' and, only in early spring, on Populus trichocarpa (Torr & A. Gray) 'Trichobel'. Using behavioural tests and recently developed species-specific microsatellite markers, the intra- and interspecific mating of both beetle species were investigated. The microsatellite markers provided evidence that interspecific mating occurred under field conditions. Interspecific mating also took place under laboratory conditions, but less frequently than mating within species. Females of both species laid fewer eggs, and fewer eggs per clutch, when isolated with an interspecific male than with a conspecific male. Female P. vulgatissima were polyandrous, as microsatellite markers showed that their larvae were the progeny of both P. vulgatissima males that had been isolated with a single female. While only 0.55% of eggs laid in interspecific pair combinations hatched, microsatellite markers provided evidence of hybridisation between beetle species; however, these larvae died within a week when reared in a Petri dish containing 'Germany' and P. trichocarpa leaves. It can therefore be inferred that reproductive isolation is complete. The results are discussed in relation to species integrity and the implications for diverse mixtures of short-rotation coppice willow plantations. 2007-09-19T00:00:00Z Peacock, Lori og Batley, Jacqueline og Dungait, Jennifer og Barker, Jacqueline H. A. og Powers, Stephen og Karp, Angela http://espace.library.uq.edu.au/view/UQ:204467 2010-04-27T00:00:00Z Li, X. og Zhang, D. og Kumar, A. og Bryden, W. L. http://espace.library.uq.edu.au/view/UQ:73863 Research on Chinese consumer behavior is dominated by studies of Chinese consumers as a whole, or studies of consumers in a single city or region. Comparative studies that take into account the cultural, economic and demographic differences between contrasting markets within China are poorly represented in the literature. The widening economic gap between rapidly developing coastal cities and less developed cities in more remote regions provides an opportunity for comparative consumer studies. In this research we compared the responses of buyers of imported fruit in two very different cites, Guangzhou (highly developed) and Urumqi (relatively undeveloped). Results revealed that buyers' beliefs and their evaluation of those beliefs towards the attributes of imported fruit were distinctly different. Factors such as the city's background, consumers' education level and the intended uses explained most of these differences. Results will help to broaden our understanding of Chinese consumer behavior and provide valuable information when formulating marketing strategies. (C) 2003 Elsevier Ltd. All rights reserved. 2007-08-15T00:00:00Z Sun, XM og Collins, R http://espace.library.uq.edu.au/view/UQ:150298 2008-06-06T00:00:00Z Perez-Maldonado, R. A. og Farrell, D. J. og Mannion, P. F. http://espace.library.uq.edu.au/view/UQ:60263 2007-08-14T00:00:00Z Atlin, G. N. og Cooper, M. og Bjornstad, A. http://espace.library.uq.edu.au/view/UQ:104721 2007-08-23T00:00:00Z Dibbs, T. N. og McGowan, C. M. og Boston, C. og Bryden, W. L. http://espace.library.uq.edu.au/view/UQ:268071 2012-02-22T00:00:00Z Way, Heather M. og Birch, Robert G. og Manners, John M. http://espace.library.uq.edu.au/view/UQ:61380 Background: Using the fastest dental X-ray film available is an easy way of reducing exposure to ionizing radiation. However, the diagnostic ability of fast films for the detection of proximal surface caries must be demonstrated before these films will become universally accepted. Methods: Extracted premolar and molar teeth were arranged to simulate a bitewing examination and radiographed using Ultraspeed and Ektaspeed Plus dental X-ray films. Three different exposure times were used for each film type. Six general dentists were used to determine the presence and depth of the decay in the proximal surfaces of the teeth radiographed. The actual extent of the decay in the teeth was determined by sectioning the teeth and examining them under a microscope. Results: There was no significant difference between the two films for the mean correct diagnosis. However, there was a significant difference between the means for the three exposure times used for Ultraspeed film. The practitioners used were not consistent in their ability to make a correct diagnosis, or for the film for which they got the highest correct diagnosis. Conclusions: Ektaspeed Plus dental X-ray film is just as reliable as Ultraspeed dental X-ray film for the detection of proximal surface decay. The effect of underexposure was significant for Ultraspeed, but not for Ektaspeed Plus. Patient exposure can be reduced significantly with no loss of diagnostic ability by changing from Ultraspeed X-ray film to Ektaspeed Plus X-ray film. 2007-08-14T00:00:00Z Wong, Andrew og Monsour, Paul A. og Moule, Alex J. og Basford, Kaye E. http://espace.library.uq.edu.au/view/UQ:63265 2007-08-14T00:00:00Z Moule, Alex J. og Wong, Andrew og Monsour, Paul A. og Basford, Kaye E. http://espace.library.uq.edu.au/view/UQ:277119 2012-07-09T10:09:55Z Zhou, Ya-Feng og Haynes, Richard J. http://espace.library.uq.edu.au/view/UQ:96465 2007-08-24T00:00:00Z Sun, X. T. og Collins, R. J. og Kim, J.