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Acta Agron Sin ›› 2007, Vol. 33 ›› Issue (02): 341-344.

• RESEARCH NOTES • Previous Articles     Next Articles

SSR Linkage Map Construction and QTL Identification for Plant Height and Ear Height in Maize (Zea mays L.)

ZHANG Zhi-Ming,ZHAO Mao-Jun,RONG Ting-Zhao,PAN Guang-Tang*   

  1. Maize Research Institute, Sichuan Agricultural University/Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Ya’an 625014, Sichuan, China
  • Received:2005-09-14 Revised:1900-01-01 Online:2007-02-12 Published:2007-02-12
  • Contact: PAN Guang-Tang

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Abstract:

A mapping population consisting of 229 F2 individuals derived from the cross between maize (Zea mays L.) inbreds R15 and Ye 478 was used in this study. Plant height (PH) and ear height (EH) of 229 F2:4 population individual plants were measured at two locations by random block design in 2003. A genetic linkage map was constructed containing 146 simple sequence repeat (SSR) markers, which covered 1 666 cM of the maize genome, with an average distance of 11.4 cM. Composite interval mapping identified eight QTL for PH located on chromosomes 2, 3, 4, 5 and 8, and three QTL for EH located on chromosome 4, with explained phenotypic variation ranging from 6.67% to 11.59% and from 10.46% to 12.15%, respectively.

Key words: SSR, Molecular linkage map, Quantitative trait locus, Plant height, Ear height, Maize (Zea mays L.)

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