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Title of Journal: Euphytica

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Abbravation: Euphytica

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Springer Netherlands

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DOI

10.1007/pl00005581

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1573-5060

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Molecular detection of rye Emphasis Type="Italic

Authors: Shuiyang Yu Hai Long Hong Yang Jie Zhang Guangbing Deng Zhifen Pan Erliang Zhang Maoqun Yu
Publish Date: 2012/03/16
Volume: 186, Issue: 1, Pages: 247-255
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Abstract

Powdery mildew Pm caused by Blumeria graminis f sp tritici Bgt is one of the most serious diseases for common wheat in many regions around the world Seeking for new resistance source is urgently required to meet the challenge of the rapid loss of resistance due to the coevolution of the pathogen’s virulence Wheat line 07jian126 Triticum aestivum L is highly resistant to the Pm disease prevailing in Sichuan province of China Previous study showed that a SSR marker Xbarc183 was linked to the Pm resistance in 07jian126 which might be controlled by a single dominant gene designated as Pm07J126 In this study two additional F2 populations were used to confirm the linkage between Pm07J126 and Xbarc183 Furthermore rye chromatin was detected in 07jian126 by molecular analysis of a ryespecific SCAR marker O5 which cosegregated with Pm07J126 This result indicated that Pm07J126 might originate from rye The reaction patterns to 21 Bgt isolates and molecular marker analysis implied that Pm07J126 might be different from the known ryederived Pm genes Pm7 Pm8 Pm17 and PmJZHM2RL Chromosome observation molecular marker and APAGE analysis suggested that 07jian126 might be a rye introgression line and neither contain 1RS translocation nor secalins gene Consequently 07jian126 could be considered as a valuable resource for Pm resistance development of wheat Besides the molecular markers Xbarc183 and O5 are useful in markerassisted selection of Pm07J126 in wheat breeding programs

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