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  • FPGA  (3)
  • Key words Oryza sativa L.  (3)
  • Springer  (6)
  • Blackwell Publishing Ltd
  • Oxford University Press
  • 2000-2004  (6)
Collection
Keywords
Publisher
  • Springer  (6)
  • Blackwell Publishing Ltd
  • Oxford University Press
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Analyzing quantitative trait loci for yield using a vegetatively replicated F2 population from a cross between the parents of an elite rice hybrid (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 248-254 
    Details
    ISSN: 1432-2242
    Keywords: Key words Oryza sativa L. ; Ratoon ; Molecular marker ; QTL
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Although F2s are the most informative populations for genetic analysis, it has been difficult to use F2 populations directly for QTL analysis because it is usually difficult to assess the reliability of the data, due to an inability to estimate the experimental errors. In this study, we performed a QTL analysis for yield and yield-component traits of an F2 population based on data from replicated field trials over 2 years using vegetative shoots of ratooned plants, making use of the ratooning habit of rice. The objective of this study was to explore the possibility of conducting QTL analyses directly based on an F2 population by means of ratooning plants. The experimental population was from a cross between ’Zhenshan 97’ and ’Minghui 63’, the parents of ’Shanyou 63’, an elite rice hybrid widely grown in China. A genetic linkage map containing 151 molecular markers was constructed for QTL mapping. A total of 20 distinct QTLs were detected; eight of these were detected in both years and remaining 12 in only 1 year. Compared with the results of our previous analysis of the F2:3 families from the same cross, it was shown that most of the QTLs detected in the ratooned F2 population were also detected in the F2:3 population. However, the estimates of both additive and dominant types of genetic effects for many of the QTLs based on F2 ratoons were substantially larger than those based on F2:3 families. The results indicate that vegetatively ratooned F2 populations may have considerable utility in the mapping of QTLs, especially if dominant types of gene actions are of concern, although there were certain technical limitations in making use of such populations in the experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051476
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  • 2
    Electronic Resource
    Electronic Resource
    Isolation and in vitro culture of zygotes and central cells of Oryza sativa L. (2000)
    Springer
    Plant cell reports 19 (2000), S. 321-326 
    Details
    ISSN: 1432-203X
    Keywords: Key words Oryza sativa L. ; Egg cell ; Zygote ; Central cell ; Isolation ; Microculture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  All component cells of the embryo-sac before and after fertilization in rice were isolated by manual microdissection under conditions either free of enzymes or combined with a short pulse of enzymatic treatment.In general, the frequency of isolated unfertilized or fertilized egg cells or central cells reached 15–40%. Various component cells of the embryo-sac after isolation were distinguished by their own morphological characteristics. The isolated cells were cultured in a microchamber and fed with dividing rice suspension cells. Both unfertilized and fertilized egg cells and central cells were induced to divide. Among them only the fertilized egg cells (the zygotes) developed into proembryo-like multicellular structures. The frequency of the first zygotic division and the frequency of multicellular structures were higher using the non-enzymatic method than using the enzymatic one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050020
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  • 3
    Electronic Resource
    Electronic Resource
    QTLs and epistasis for aluminum tolerance in rice (Oryza sativa L.) at different seedling stages (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 1295-1303 
    Details
    ISSN: 1432-2242
    Keywords: Key words Oryza sativa L. ; AFLP markers ; RFLP markers ; Aluminum tolerance ; QTLs ; Epistasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  To investigate the genetic background for aluminum (Al) tolerance in rice, a recombinant inbred (RI) population, derived from a cross between an Al-sensitive lowland indica rice variety IR1552 and an Al-tolerant upland japonica rice variety Azucena, was used in culture solution. A molecular linkage map, together with 104 amplified fragment length polymorphism (AFLP) markers and 103 restriction fragment length polymorphism (RFLP) markers, was constructed to map quantitative trait loci (QTLs) and epistatic loci for Al tolerance based on the segregation for relative root length (RRL) in the population. RRL was measured after stress for 2 and 4 weeks at a concentration of 1mM of Al3+ and a control with a pH 4.0, respectively. Two QTLs were detected at both the 2nd and the 4th weeks on chromosomes 1 and 12 from unconditional mapping, while the QTL on chromosome 1 was only detected at the 2nd stress week from conditional mapping. The effect of the QTL on chromosome 12 was increased with an increase of the stress period from 2 to 4 weeks. The QTL on chromosome 1 was expressed only at the earlier stress, but its contribution to tolerance was prolonged during growth. At least one different QTL was detected at the different stress periods. Mean comparisons between marker genotypic classes indicated that the positive alleles at the QTLs were from the Al-tolerant upland rice Azucena. An important heterozygous non-allelic interaction on Al tolerance was found. The results indicated that tolerance in the younger seedlings was predominantly controlled by an additive effect, while an epistatic effect was more important to the tolerance in older seedlings; additionally the detected QTLs may be multiple allelic loci for Al tolerance and phosphorus-uptake efficiency, or for Al and Fe2+ tolerance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051438
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  • 4
    Electronic Resource
    Electronic Resource
    An Approach to Minimize the Test Configuration for the Logic Cells of the Xilinx XC4000 FPGAs Family (2000)
    Springer
    Journal of electronic testing 16 (2000), S. 289-299 
    Details
    ISSN: 1573-0727
    Keywords: FPGA ; test ; ATPG ; iterative testing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper describes an approach to minimize the number of test configurations for testing the logic cells of a RAM-based FPGA taking into account the configurability of such flexible device. The proposed approach concerns the XILINX 4000 family. On this example of FPGA, a bottom-up test technique is first used to generate test configurations for the elementary modules, then test configurations for a single logic cell, and finally test configurations for the m × m array of logic cells. In this bottom-up technique, it is shown that the key point is the minimization of the number of test configurations for a logic cell. An approach for the logic cell of the XILINX4000 family is then described to define a minimum number of test configurations knowing the test configurations of its logic modules. This approach gives only 5 test configurations for the XILINX4000 family while the previous published works concerning Boolean testing of this FPGA family gives 8 or 21 test configurations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008355701933
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  • 5
    Electronic Resource
    Electronic Resource
    Testing the Local Interconnect Resources of SRAM-Based FPGA's (2000)
    Springer
    Journal of electronic testing 16 (2000), S. 513-520 
    Details
    ISSN: 1573-0727
    Keywords: VLSI ; FPGA ; test ; ATPG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper addresses the problem of testing the configurable modules used in the local interconnect of SRAM-based FPGAs. First, it is demonstrated that a n address bit Configurable Interface Multiplexer requires N = 2 n test configurations considering a stuck-at as well as a functional fault model. Second, a logic cell with a set of k input Configurable Interface Modules with n address bits is analyzed and it is proven that the set of CIMs can be tested in parallel making the number of required test configurations equal to N = 2 n . Third, it is shown that the complete circuit i.e. a m × m array of sets of k Configurable Interface Multiplexers with n address bits can be tested with only N = 2 n test configurations using the XOR tree and shift register structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008376917755
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  • 6
    Electronic Resource
    Electronic Resource
    A Codesign Approach to Real-time High Precision Control (2000)
    Springer
    Real-time systems 19 (2000), S. 41-60 
    Details
    ISSN: 1573-1383
    Keywords: Codesign ; FPGA ; Spring Forming Machine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A new approach to design a high precision real-time control system for a spring forming machine is presented. This system is designed to satisfy the required high motor speed command signal and the product to product tolerance is limited to 0.1%. An innovative variable pulse generation algorithm is proposed for the activation of the motor in order to meet the stringent specifications. Because of the high speed command, software implementation of this algorithm would not be viable as this is intended to be a low cost automation system. To further enhance the system performance, an overall system architecture to incorporate a hardware solution is proposed. This new architecture comprises hardware and software functionality such that the codesign methodology is employed for the partitioning of the design procedures. Within this architecture, software development includes a user-friendly, safety and fault detection facility to improve the human-machine interface. This new precision control system meets the required performance specifications with only two-pieces of 2K gates Field Programmable Gate Array (FPGA) Actel chips are required for the implementation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008184206285
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