Genomic regions associated with resistance to peanut bud necrosis disease (PBND) in a recombinant inbred line (RIL) population

Parents and 318 F8 recombinant inbred lines (RILs) derived from the cross, TAG 24 × ICGV 86031 were evaluated for peanut bud necrosis disease (PBND) resistance and agronomic traits under natural infestation of thrips at a disease hotspot location for 2 years. Significant genotype, environment and genotype × environment interaction effects suggested role of environment in development and spread of the disease. Quantitative trait loci (QTL) analysis using QTL Cartographer identified a total of 14 QTL for six traits of which five QTL were for disease incidence. One quantitative trait locus q60DI located on LG_AhII was identified using both QTL Cartographer and QTL Network. Another QTL q90DI was detected with a high PVE of 12.57 using QTL Cartographer. A total of nine significant additive × additive (AA) interactions were detected for PBND disease incidence and yield traits with two and seven interactions displaying effects in favour of the parental and recombinant genotype combinations, respectively. This is the first attempt on QTL discovery associated with PBND resistance in peanut. Superior RILs identified in the study can be recycled or released as variety following further evaluations

Prototype-Oriented Development of High-performance Systems

In this paper, we discuss the problem of developing performance-oriented software and the need for methodologies. We then present the EDPEPPS (Environment for Design and Performance Evaluation of Portable Parallel Software) approach to the problem of designing and evaluating high-performance (parallel) applications. The EDPEPPS toolset is based on a rapid prototyping philosophy, where the designer synthesises a model of the intended software which may be simulated, and the performance is subsequently analysed using visualisation. The toolset combines a graphical design tool, a simulation facility, and a visualisation tool. The same design is used to produce a code suitable for simulation and real execution. 1 Introduction Many existing software engineering techniques which assist in the management of the complexity of serial programs can be directly applied to the development of parallel software. Many of the assumptions about serial programs, however, do not hold for parallel programs..

EDPEPPS: a toolset for the design and performance evaluation of parallel applications

This paper describes a performance-oriented environment for the design of portable parallel software. The environment consists of a graphical design tool based on the PVM communication library for building parallel algorithms, a state-of-the-art simulation engine, a CPU characteriser and a visualisation tool for animation of program execution and visualisation of platform and network performance measures and statistics. The toolset is used to model a virtual machine composed of a cluster of workstations interconnected by a local area network. The simulation model used is modular and its components are interchangeable which allows easy re-configuration of the platform. Both communication and CPU models are validated

A Graphical Toolset for Performance-Oriented Design of Portable Parallel Software

. This paper describes a portable performance-oriented integrated toolset for parallel software development. This toolset is composed of a graphical design tool, a simulation tool, and a visualisation tool. The toolset helps the parallel programmer to choose between design alternatives based on their predicted performances. The graphical design tool helps users who are not familiar with parallel programming models (such as PVM) to automatically generate executable parallel code. The target parallel system models a virtual machine composed of a cluster of workstations interconnected by a local area network. The simulation model architecture is modular and extensible which allows the re-configuration of the platform. The model description and the validation experiments which have been conducted to assess the correctness and the accuracy of the model are also presented. 1 Introduction A major obstacle to the widespread adoption of parallel computing in industry is the difficulty in progr..