玉米SSR连锁图谱构建与株高及穗位高QTL定位

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*

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

Abstract

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 F_2:4 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.)

ZHANG Zhi-Ming;ZHAO Mao-Jun;RONG Ting-Zhao;PAN Guang-Tang. SSR Linkage Map Construction and QTL Identification for Plant Height and Ear Height in Maize (Zea mays L.)[J].Acta Agron Sin, 2007, 33(02): 341-344.

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