Mapping QTLs for polyphenol oxidase activity in a DH population from common wheat

Zhang, Li-Ping and Ge, Xiu-Xiu and He, Zhong-Hu and Wang, De-Sen and Yan, Jun and Xia, Xian-Chun and Sutherland, Mark W. (2005) Mapping QTLs for polyphenol oxidase activity in a DH population from common wheat. Acta Agronomica Sinica (Zuowu Xuebao), 31 (1). pp. 7-10. ISSN 0496-3490

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The polyphenol oxidase ( PPO) is a major factor to cause an undesirable brown discoloration of wheat-based end products during processing or storage. A double haploid (DH) population with 71 lines derived from Zhongyou 9507 with higher PPO activity and CA9632 with lower PPO activity. Field trails were conducted at three locations with two replications. A total of 173 loci included SSR, STS of storage protein and AFLP markers were used to construct a linkage map, covering 2 881 cM of whole genome at 21 linkage groups. With the method of composite interval mapping (CIM), two putative major QTLs were detected on chromosome 2AL and 2DL, accounting for 37.9%-50.0% and 25%-29.1% of the phenotypic variance across three environments, respectively. The QTL on 2AL played a more significant role than the QTL on 2DL. Reduction of PPO activity through genetic improvement and molecular marker assisted selection was also discussed.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Publisher version deposited with permission of publisher (Institute of Crop Sciences, Chinese Academy of Agriculture Sciences)
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 21 Jan 2008 23:34
Last Modified: 02 Jul 2013 22:32
Uncontrolled Keywords: common wheat; triticum aestivum L.; polyphenol oxidase; molecular marker; quantitative trait loci (QTL)
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)

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