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Hou Chen-Xi, Zhai Xing-Guang, Wu Dan-Dan, Zhou Yong-Hong, Zhang Chang-Bing, Zhang Hai-Qin. Identification and formation of natural hybrids of Campeiostachys in Triticeae[J]. Plant Science Journal, 2022, 40(1): 11-20. DOI: 10.11913/PSJ.2095-0837.2022.10011
Citation: Hou Chen-Xi, Zhai Xing-Guang, Wu Dan-Dan, Zhou Yong-Hong, Zhang Chang-Bing, Zhang Hai-Qin. Identification and formation of natural hybrids of Campeiostachys in Triticeae[J]. Plant Science Journal, 2022, 40(1): 11-20. DOI: 10.11913/PSJ.2095-0837.2022.10011
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Identification and formation of natural hybrids of Campeiostachys in Triticeae

  • 1. Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China;

  • 2. Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China;

  • 3. Sichuan Academy of Grassland Science, Chengdu 610000, China;

  • 4. State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China

Funds: 

This work was supported by grants from the National Natural Science Foundation of China (31870309, 31670331), Aba PrefectureScience and Technology Bureau Project (R21YYJSYJ0014), and Sichuan Province Science and Technology Department Project(2021NZZJ0010).

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  • Received Date: August 08, 2021
  • Revised Date: December 08, 2021
  • Available Online: October 31, 2022
  • Published Date: February 27, 2022
    Graphical Abstract
    • Abstract
  • In this study, morphological, cytological, and phylogenetic analyses were used to identify two suspected natural hybrids in the genus Campeiostachys. Results showed that the two natural hybrids were similar to C.breviaristata (Keng) Y. H. Zhou, H. Q. Zhang et C. R. Yang. morphologically, but had low pollen fertility (13.30% and 21.20%) and seed setting (10.70% and 18.60%). Cytological studies showed that the two hybrids were hexaploids (2n=42), with StStYYHH genomes. Phylogenetic analysis based on the nuclear gene DMC1 and chloroplast gene rps16 showed that the possible parents of the natural hybrids were C. breviaristata,Elymus submuticus Keng, and Elymus atratus (Nevski) Hand.-Mazz, with C. breviaristata being the female parent. Considering the hybrids had no or short awns, we inferred that C. breviaristata (female parent) and E. submuticus may be the parental species of these two natural hybrids.
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    • References (19)
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