Table of Contents
International Journal of Plant Genomics
Volume 2009 (2009), Article ID 141234, 3 pages
http://dx.doi.org/10.1155/2009/141234
Resource Review

PROC QTL—A SAS Procedure for Mapping Quantitative Trait Loci

Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA

Received 12 July 2009; Accepted 23 September 2009

Academic Editor: Nengjun Yi

Copyright © 2009 Zhiqiu Hu and Shizhong Xu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Statistical analysis system (SAS) is the most comprehensive statistical analysis software package in the world. It offers data analysis for almost all experiments under various statistical models. Each analysis is performed using a particular subroutine, called a procedure (PROC). For example, PROC ANOVA performs analysis of variances. PROC QTL is a user-defined SAS procedure for mapping quantitative trait loci (QTL). It allows users to perform QTL mapping for continuous and discrete traits within the SAS platform. Users of PROC QTL are able to take advantage of all existing features offered by the general SAS software, for example, data management and graphical treatment. The current version of PROC QTL can perform QTL mapping for all line crossing experiments using maximum likelihood (ML), least square (LS), iteratively reweighted least square (IRLS), Fisher scoring (FISHER), Bayesian (BAYES), and empirical Bayes (EBAYES) methods.