Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (7): 1324-1330 .

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES • Previous Articles     Next Articles

Genetic diversity revealed by chloroplast genome microsatellite markers in hexaploid wheat, wild emmer and Aegilops tauschii

XinQuan Yang Xing Song JinKun Du ZhongFu Ni   

  1. 中国农业大学植物遗传育种系
  • Received:2006-06-23 Revised:2006-09-11 Online:2007-07-10 Published:2007-07-10

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Abstract: In this study, 21 SSR markers derived from chloroplast genome of common wheat, are used to measure the genetic diversity among hexaploid wheat populations and their relatives, which include 20 common wheat (Triticum aestivum L.), 21 spelt (Triticum spelta L.), 20 compactum (Triticum compactum Host.), 10 wild emmer (Triticum dicoccoides), 16 Chinese wheat landraces(9 T. tibetanum, 3 T. yunnanense and 4 T. petropavlavskyi) and 9 Aegilops tauschii. Compared with common wheat, the genetic variation base of chloroplast genome in spelt and T. tibetanum were more abundant, which can be used to broaden the genetic basis of common wheat. Cluster analysis exhibited that, wild emmer has a closer consanguine relationship to hexaploid wheat, as compare to with Aegilops tauschi. In addition, it was found that there was a closer genetic relationship in chloroplast genome of common wheat and T. petropavlavskyi, which indicated that T. petropavlavskyi maybe derived from the backcross between common wheat and Polish wheat.

Key words: chloroplast genome, SSR, wheat, genetic diversity

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