Abstract
In order to evaluate and compare the germplasm resources of wheat in Tibet, we analyzed the genetic diversity of 136 Triticum aestivum ssp. tibetanum Shao and 119 Tibetan wheat landraces (Triticum aestivum L.) by using Intron-Splice Junction (ISJ) primers. The results showed that polymorphism of PCR products were obtained by 33 primer combinations, which accounted for 11% of the 300 primer combinations produced by 26 ISJ primers. A total of 333 stable bands can be amplified from the T. aestivum ssp. tibetanum Shao and 243 bands were polymorphic, which accounted for 72.9% of the total bands. Tibetan wheat Landraces produced 316 stable bands, of which 197 bands were polymorphic. The polymorphic bands accounted for 62.34% of the total bands produced from Tibetan wheat landraces. The genetic diversity of T. aestivum ssp. tibetanum Shao was higher than that of Tibetan wheat landraces in Tibet, suggesting that T. aestivum ssp. tibetanum Shao can be used as important genetic resource for the breeding and genetic improvement of wheat in Tibet. Matrix (1, 0) was generated according to the presence or absence of the bands produced from a particular wheat accession. Clustering and principle coordinates analysis showed that T. aestivum ssp. tibetanum Shao and Tibetan wheat landraces were divided into two groups. We conclude that high polymorphisms produced by ISJ primers can reflect the genetic diversity between T. aestivum ssp. tibetanum Shao and Tibetan wheat landraces.
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Acknowledgments
The present study was supported by the grant from the National Science Technology planning Project of China (NSTPP) (No. 2006BAD01A02), and the Natural Science Foundation of Shaanxi province (No. 2007C111). We would like to thank Dr. Zhenghui Liu (College of Agronomy, Nanjing Agricultural University, Nanjing 210095, China) and Dr. Weining Song (College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China) for help and advice.
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Zeng, X., Wang, Y., Li, W. et al. Comparison of the genetic diversity between Triticum aestivum ssp. tibetanum Shao and Tibetan wheat landraces (Triticum aestivum L.) by using intron-splice junction primers. Genet Resour Crop Evol 57, 1141–1150 (2010). https://doi.org/10.1007/s10722-010-9553-9
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DOI: https://doi.org/10.1007/s10722-010-9553-9