996 research outputs found
Internet-based Framework to Support Integration of Customer in the Design of Customizable Products
A necessary element to design and produce customer-centric products is the integration of customers in the design process. Challenges faced during customer integration into the design process include generating models of the customized product, performing analysis of these to determine feasibility, and optimizing to increase the performance. These tasks have to be performed relatively quickly, if not in real time, to provide feedback to the customer. The focus of this article is to present a framework that utilizes CAD, finite element analysis (FEA), and optimization to integrate the customer into the design process via the Internet for delivering user customized products. The design analysis, evaluation, and optimization need to be automated and enhanced to enable operation over the Internet. A product family CAD/FEA template has been developed to perform analysis, along with a general formulation to optimize the customized product. The CAD/FEA template generalizes the geometry building and analysis of each configuration developed using a product platform approach. The proposed setup is demonstrated through the use of a bicycle frame family. In this study, the focus is on the application of optimization and FEA to facilitate the design of customer-centric products.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline
Super-reflection of light from a random amplifying medium with disorder in the complex refractive index : Statistics of fluctuations
The probability distribution of the reflection coefficient for light
reflected from a one-dimensional random amplifying medium with {\it
cross-correlated} spatial disorder in the real and the imaginary parts of the
refractive index is derived using the method of invariant imbedding. The
statistics of fluctuations have been obtained for both the correlated telegraph
noise and the Gaussian white-noise models for the disorder. In both cases, an
enhanced backscattering (super-reflection with reflection coefficient greater
than unity) results because of coherent feedback due to Anderson localization
and coherent amplification in the medium. The results show that the effect of
randomness in the imaginary part of the refractive index on localization and
super-reflection is qualitatively different.Comment: RevTex 6 pages, 3 figures in ps file
Genome-wide association mapping of nutritional traits for designing superior chickpea varieties
Micronutrient malnutrition is a serious concern in many parts of the world; therefore, enhancing crop nutrient content is an important challenge. Chickpea (Cicer arietinum L.), a major food legume crop worldwide, is a vital source of protein and minerals in the vegetarian diet. This study evaluated a diverse set of 258 chickpea germplasm accessions for 12 key nutritional traits. A significant variation was observed for several nutritional traits, including crude protein (16.56â24.64/100âg), β-Carotene (0.003â0.104âmg/100âg), calcium (60.69â176.55âmg/100âg), and folate (0.413â6.537âmg/kg). These data, combined with the available whole-genome sequencing data for 318,644 SNPs, were used in genome-wide association studies comprising single-locus and multi-locus models. We also explored the effect of varying the minor allele frequency (MAF) levels and heterozygosity. We identified 62 significant marker-trait associations (MTAs) explaining up to 28.63% of the phenotypic variance (PV), of which nine were localized within genes regulating G protein-coupled receptor signaling pathway, proteasome assembly, intracellular signal transduction, and oxidationâreduction process, among others. The significant effect MTAs were located primarily on Ca1, Ca3, Ca4, and Ca6. Importantly, varying the level of heterozygosity was found to significantly affect the detection of associations contributing to traits of interest. We further identified seven promising accessions (ICC10399, ICC1392, ICC1710, ICC2263, ICC1431, ICC4182, and ICC16915) with superior agronomic performance and high nutritional content as potential donors for developing nutrient-rich, high-yielding chickpea varieties. Validation of the significant MTAs with higher PV could identify factors controlling the nutrient acquisition and facilitate the design of biofortified chickpeas for the future
Integrating genomics for chickpea improvement: achievements and opportunities
The implementation of novel breeding technologies is expected to contribute substantial improvements in crop
productivity. While conventional breeding methods have led to development of more than 200 improved chickpea varieties
in the past, still there is ample scope to increase productivity. It is predicted that integration of modern genomic resources
with conventional breeding efforts will help in the delivery of climate-resilient chickpea varieties in comparatively less
time. Recent advances in genomics tools and technologies have facilitated the generation of large-scale sequencing and
genotyping data sets in chickpea. Combined analysis of high-resolution phenotypic and genetic data is paving the way for
identifying genes and biological pathways associated with breeding-related traits. Genomics technologies have been used
to develop diagnostic markers for use in marker-assisted backcrossing programmes, which have yielded several molecular
breeding products in chickpea. We anticipate that a sequence-based holistic breeding approach, including the integration of
functional omics, parental selection, forward breeding and genome-wide selection, will bring a paradigm shift in development
of superior chickpea varieties. There is a need to integrate the knowledge generated by modern genomics technologies
with molecular breeding efforts to bridge the genome-to-phenome gap. Here, we review recent advances that have led to new
possibilities for developing and screening breeding populations, and provide strategies for enhancing the selection efficiency
and accelerating the rate of genetic gain in chickpea
Drought or/and Heat-Stress Effects on Seed Filling in Food Crops: Impacts on Functional Biochemistry, Seed Yields, and Nutritional Quality
Drought (water deficits) and heat (high temperatures) stress are the prime abiotic constraints, under the current and climate change scenario in future. Any further increase in the occurrence, and extremity of these stresses, either individually or in combination, would severely reduce the crop productivity and food security, globally. Although, they obstruct productivity at all crop growth stages, the extent of damage at reproductive phase of crop growth, mainly the seed filling phase, is critical and causes considerable yield losses. Drought and heat stress substantially affect the seed yields by reducing seed size and number, eventually affecting the commercial trait â100 seed weightâ and seed quality. Seed filling is influenced by various metabolic processes occurring in the leaves, especially production and translocation of photoassimilates, importing precursors for biosynthesis of seed reserves, minerals and other functional constituents. These processes are highly sensitive to drought and heat, due to involvement of array of diverse enzymes and transporters, located in the leaves and seeds. We highlight here the findings in various food crops showing how their seed composition is drastically impacted at various cellular levels due to drought and heat stresses, applied separately, or in combination. The combined stresses are extremely detrimental for seed yield and its quality, and thus need more attention. Understanding the precise target sites regulating seed filling events in leaves and seeds, and how they are affected by abiotic stresses, is imperative to enhance the seed quality. It is vital to know the physiological, biochemical and genetic mechanisms, which govern the various seed filling events under stress environments, to devise strategies to improve stress tolerance. Converging modern advances in physiology, biochemistry and biotechnology, especially the âomicsâ technologies might provide a strong impetus to research on this aspect. Such application, along with effective agronomic management system would pave the way in developing crop genotypes/varieties with improved productivity under drought and/or heat stresses
Formalization of Transform Methods using HOL Light
Transform methods, like Laplace and Fourier, are frequently used for
analyzing the dynamical behaviour of engineering and physical systems, based on
their transfer function, and frequency response or the solutions of their
corresponding differential equations. In this paper, we present an ongoing
project, which focuses on the higher-order logic formalization of transform
methods using HOL Light theorem prover. In particular, we present the
motivation of the formalization, which is followed by the related work. Next,
we present the task completed so far while highlighting some of the challenges
faced during the formalization. Finally, we present a roadmap to achieve our
objectives, the current status and the future goals for this project.Comment: 15 Pages, CICM 201
Drought and heat stress-related proteins: an update about their functional relevance in imparting stress tolerance in agricultural crops
Key message
We describe here the recent developments about the involvement of diverse stress-related proteins in sensing, signaling, and defending the cells in plants in response to drought or/and heat stress.
Abstract
In the current era of global climate drift, plant growth and productivity are often limited by various environmental stresses, especially drought and heat. Adaptation to abiotic stress is a multigenic process involving maintenance of homeostasis for proper survival under adverse environment. It has been widely observed that a series of proteins respond to heat and drought conditions at both transcriptional and translational levels. The proteins are involved in various signaling events, act as key transcriptional activators and saviors of plants under extreme environments. A detailed insight about the functional aspects of diverse stress-responsive proteins may assist in unraveling various stress resilience mechanisms in plants. Furthermore, by identifying the metabolic proteins associated with drought and heat tolerance, tolerant varieties can be produced through transgenic/recombinant technologies. A large number of regulatory and functional stress-associated proteins are reported to participate in response to heat and drought stresses, such as protein kinases, phosphatases, transcription factors, and late embryogenesis abundant proteins, dehydrins, osmotins, and heat shock proteins, which may be similar or unique to stress treatments. Few studies have revealed that cellular response to combined drought and heat stresses is distinctive, compared to their individual treatments. In this review, we would mainly focus on the new developments about various stress sensors and receptors, transcription factors, chaperones, and stress-associated proteins involved in drought or/and heat stresses, and their possible role in augmenting stress tolerance in crops
Temperature sensitivity of food legumes: a physiological insight
Of the various environmental stresses that a plant can experience, temperature has the widest and most far-reaching effects on legumes. Temperature extremes, both high (heat stress) and low (cold stress), are injurious to plants at all stages of development, resulting in severe loss of productivity. In response to unfavorable temperatures, plant biomolecules such as stress proteins, enzymatic and non-enzymatic antioxidants, organic osmolytes and phytohormones come into play, usually, as a part of the plant defense mechanisms. The accumulation of these molecules, which may be useful as metabolic indicators of stress tolerance, depend on the plant species exposed to the temperature stress, its intensity and duration. Some of these molecules such as osmolytes, non-enzymatic antioxidants and phytohormones may be supplied exogenously to improve temperature stress tolerance. Legumes show varying degrees of sensitivity to high and low-temperature stresses, which reduces their potential performance at various developmental stages. To address the ever-fluctuating temperature extremes that various legumes are being constantly exposed, efforts are being made to develop tolerant plant varieties via conventional breeding methods as well as more recent molecular breeding techniques. In this review, we describe the progress made towards the adverse effects of abnormal temperatures on various growth stages in legumes and propose appropriate strategies to resolve these effects
Genome-wide transcriptome analysis and physiological variation modulates gene regulatory networks acclimating salinity tolerance in chickpea
Salinity is a major abiotic stress that is a global threat to crop production, including chickpea. This study focused
on understanding the complex molecular mechanisms underlying salinity tolerance using comparative transcriptome
analysis of tolerant (ICCV 10, JG 11) and sensitive (DCP 92-3, Pusa 256) chickpea genotypes in control
and salt-stressed environments. A total of 530 million reads were generated from root samples of four genotypes
using Illumina HiSeq-2500. A total of 21,698 differentially expressed genes (DEGs) were identified, of which
11,456 and 10,242 were up- and down-regulated, respectively, in comparative analysis. These DEGs were
associated with crucial metabolic pathways, including hormone signaling, photosynthesis, lipid and carbohydrate
metabolism, and cell wall biogenesis. Gene ontology (GO) examination revealed an enrichment of transcripts
involved in salinity response. A total of 4257 differentially expressed GO terms were categorized into 64
functional groups; of which, GO terms like, integral component of membrane, organelle, and cellular anatomical
entity were highly represented in tolerant genotypes under salt stress. Significant up-regulation of transcripts
encoding potassium transporter family HAK/KUP proteins, MIP/aquaporin protein family, NADH dehydrogenase,
pectinesterase, and PP2C family proteins occurred under salt stress. The tolerant lines (ICCV 10 and JG 11)
engaged highly efficient machinery in response to elevated salt stress, especially for signal transduction, transport
and influx of K+ ions, and osmotic homeostasis. The overall study highlights the role of potential candidate
genes and their regulatory networks which can be utilized in breeding salt tolerant chickpea cultivars
Crop Updates 2002 - Pulse Research and Industry Development in Western Australia
This session covers seventy one papers from different authors:
1. 2001 PULSE INDUSTRY HIGHLIGHTS
CONTRIBUTORS
BACKGROUND
2001 REGIONAL ROUNDUP
2. Northern Agricultural Region, M. Harries, Department of Agriculture
3. Central Agricultural Region, R. French and I. Pritchard, Department of Agriculture
4. Great Southern and Lakes, N. Brandon, N. Runciman and S. White, Department of Agriculture
5. Esperance Mallee, M. Seymour, Department of Agriculture
PULSE PRODUCTION AGRONOMY AND GENETIC IMPROVEMENT
6. Faba bean, P. White, Department of Agriculture
7. Germplasm evaluation, P. White, M. Seymour and M. Harries, Department of Agriculture
8. Variety evaluation, P. White, M. Harries, N. Brandon and M. Seymour, Department of Agriculture
9. Sowing rate and time of sowing, P. White, N. Brandon, M. Seymour and M. Harries, Department of Agriculture
10.Use of granular inoculum in the Great Southern, N. Brandon1, J. Howieson2 and R. Yates2 1Department of Agriculture, 2Centre for Rhizobium Studies, Murdoch University
11.Tolerance to post emergent herbicides, M. Seymour and M. Harries, Department of Agriculture
12.Herbicide tolerance of new varieties, H. Dhammu and T. Piper, Department of Agriculture
Desi chickpea
13. Breeding highlights, T. Khan, Department of Agriculture
14. Variety evaluation, T. Khan and K. Regan, Department of Agriculture
15. Effect of genotype and environment on seed quality, N. Suizu1 and D. Diepeveen2 1School of Public Health, Curtin University of Technology 2Department of Agriculture
16. Seed discolouration, C. Veitch and P. White, Department of Agriculture
17. Foliar application on N increases seed yield and seed protein under terminal
drought, J. Palta1,2, A. Nandwal3 and N. Turner1,2 , 1CSIRO Plant Industry, 2CLIMA, the University of Western Australia, 3Department of Botany, Haryana Agric University, Hisar, India
18. Tolerance to chilling at flowering, H. Clarke, CLIMA, The University of Western Australia
19. Molecular studies of ascochyta blight disease in chickpea, G. Dwyer1, H. Loo1, T. Khan2, K. Siddique3, M. Bellgard1 and M. Jones1 ,1WA State Agricultural Biotechnology Centre and Centre for Bioinformatics and Biological Computing, Murdoch University, 2Department of Agriculture, 3CLIMA, The University of Western Australia
20. Effect of row spacing and sowing rate on seed yield, G. Riethmuller and B. MacLeod, Department of Agriculture
21. Herbicide tolerance on marginal soil types, H. Dhammu and T. Piper, Department of Agriculture
22. Kabuli chickpea, K. Regan, Department of Agriculture
23. Variety and germplasm evaluation, T. Khan and K. Regan, Department of Agriculture
24. Premium quality kabuli chickpea development in the ORIA, K. Siddique1, K. Regan2, R. Shackles2 and P. Smith2 , 1 CLIMA, The University of Western Australia, 2Department of Agriculture
25. Evaluation of ascochylta resistant germplasm from Syria and Turkey, K. Siddique1, C. Francis1 and K. Regan2, 1CLIMA, University of Western Australia 2Department of Agriculture
Field pea
26. Breeding highlights, T. Khan Department of Agriculture
27. Variety evaluation, T. Khan Department of Agriculture
28. Comparing the phosphorus requirement of field pea and wheat, M. Bolland and P. White, Department of Agriculture
29. Tolerance of field pea to post emergent herbicides, M. Seymour and N. Brandon, Department of Agriculture
30. Response of new varieties to herbicides, H. Dhammu and T. Piper, Department of Agriculture
31. Lentil, K. Regan, Department of Agriculture
32. Variety evaluation, K. Regan, N. Brandon, M. Harries and M. Seymour, Department of Agriculture
33. Interstate evaluation of advanced breeding lines developed in WA, K. Regan1, K. Siddique2 and M. Materne3, 1Department of Agriculture, 2CLIMA, University of Western Australia, 3Victorian Institute for Dryland Agriculture, Agriculture Victoria
34. Evaluation of germplasm from overseas and local projects, K. Regan1, J. Clements2, K.H.M. Siddique2 and C. Francis21Department of Agriculture, 2CLIMA, University of Western Australia
35. Evaluation of breeding lines developed in WA, K. Regan1, J. Clements2, K.H.M. Siddique2 and C. Francis21Department of Agriculture, 2CLIMA, University of Western Australia
36. Productivity and yield stability in Australia and Nepal, C. Hanbury, K. Siddique and C. Francis, CLIMA, the University of Western Australia
Vetch
37. Germplasm evaluation, M. Seymour1, R. Matic2 and M. Tate3, 1Department of Agriculture, 2South Australian Research and Development Institute, 3University of Adelaide, Waite Campus
38. Tolerance of common vetch to post emergent herbicides, M. Seymour and N. Brandon, Department of Agriculture
Narbon bean
39. Removing narbon bean from wheat, M. Seymour, Department of Agriculture
40. Tolerance to low rates of Roundup and Sprayseed, M. Seymour, Department of Agriculture
41. Lathyrus development, C. Hanbury, CLIMA, the University of Western Australia
42. Poultry feeding trials, C. Hanbury1 and B. Hughes2 ,1CLIMA, the University of Western Australia,2Pig and Poultry Production Institute, South Australia
Pulse Species
43. Species time of sowing, B. French, Department of Agriculture
44. High value pulses in the Great Southern, N. Brandon and N. Runciman, Department of Agriculture
45. Time of Harvest for improved seed yields of pulses, G. Riethmuller and B. French, Department of Agriculture
46. Phosphate acquisition efficiency of pulse crops, P. Rees, Plant Biology, Faculty of Natural and Agricultural Sciences UWA
DEMONSTRATION OF PULSES IN THE FARMING SYSTEM
47. Howzat desi chickpea in the northern region, M. Harries, Department of Agriculture
48. Field pea harvest losses in the Great Southern and Esperance region, N. Brandon and M. Seymour, Department of Agriculture
49. Timing of crop topping in field pea, N. Brandon and G. Riethmuller, Department of Agriculture
DISEASE AND PEST MANAGEMENT
50. Ascochyta blight of chickpea, B. MacLeod, M. Harries and N. Brandon, Department of Agriculture
51. Evaluation of Australian management packages,
52. Screening foliar fungicides
53. Row spacing and row spraying
54. Ascochyta management package for 2002, B. MacLeod, Department of Agriculture
55. Epidemiology of aschochyta and botrytis disease of pulses, J. Galloway and B. MacLeod, Department of Agriculture
56. Ascochyta blight of chickpea
57. Black spot of field pea
58. Ascochyta blight of faba bean
59. Ascochyta blight of lentil
60. Botrytis grey mould of chickpea
61. Black spot spread: Disease models are based in reality, J. Galloway, Department of Agriculture
62. Black spot spread: Scaling-up field data to simulate âBakers farmâ, M. Salam, J. Galloway, A. Diggle and B. MacLeod, Department of Agriculture
63. Pulse disease diagnostics, N. Burges and D. Wright, Department of Agriculture
Viruses in pulses
64. Incidence of virus diseases in chickpea, J. Hawkes1, D. Thackray1 and R. Jones1,2, 1CLIMA, The University of Western Australia 2Department of Agriculture
Insect pests
65. Risk assessment of aphid feeding damage on pulses, O. Edwards, J. Ridsdill-Smith, and R. Horbury, CSIRO Entomology
66. Optimum spray timing to control aphid feeding damage of faba bean, F. Berlandier, Department of Agriculture
67. Incorporation of pea weevil resistance into a field pea variety, O. Byrne1 and D. Hardie2, 1CLIMA, The University of Western Australia, 2Department of Agriculture
68. Screening wild chickpea species for resistance to Helicoverpa, T. Ridsdill-Smith1 and H. Sharma2,1CSIRO, Entomology, 2ICRISAT, Hyderabad
69. Field strategies to manage the evolution of pea weevil resistance in transgenic field pea, M. de Sousa Majer1, R. Roush2, D. Hardie3, R. Morton4 and T. Higgins4, 1Curtin University of Technology, 2Waite Campus, University of Adelaide, 3Department of Agriculture, 4CSIRO Plant Industry, Canberra
70. ACKNOWLEDGMENTS
71. Appendix 1: Summary of previous result
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