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Journal of Heredity Advance Access published online on March 30, 2009
Journal of Heredity, doi:10.1093/jhered/esp009
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© The American Genetic Association. 2009. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Brief Communication

Improved Genetic Mapping of Endosperm Traits Using NCIII and TTC Designs

Xuefeng Wang, Wen Song, Zefeng Yang, Yamin Wang, Zaixiang Tang, and Chenwu Xu

From the Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Key Laboratory of Plant Functional Genomics of Ministry of Education, Yangzhou University, Yangzhou 225009, China (Wang, Song, Yang, Wang, Tang, and Xu). Xuefeng Wang is now at the Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH

Address correspondence to Chenwu Xu at the address above, or e-mail: qtls{at}yzu.edu.cn.

The endosperm in plants is a major source of human nutrition and industrial raw material. The genetic study of endosperm poses a great challenge due to its complex genetic composition and unique physical and developmental properties. In this note, we shall revisit 2 classic mating designs—North Carolina Design III (NCIII) and triple test cross (TTC)—and demonstrate their efficiency in detecting quantitative trait loci underlying endosperm traits.

Key Words: endosperm trait • maximum likelihood estimation • North Carolina Design III • QTL mapping • triple test cross

Corresponding Editor: Dr. John Stommel

Received October 10, 2008
Revised February 27, 2009
Accepted February 27, 2009


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