• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jgen/100/0010

    • Keywords

       

      karyotype; chromosome number; ploidy; evolution; Amorphophallus muelleri.

    • Abstract

       

      Amorphophallus, a perennial herb belongs to the family Araceae, and is widely distributed in Asia and Africa. As anagricultural crop, it has been cultivated and consumed for ${\sim}$ 2000 years in China. Previous studies have found that there are chromosomenumber and ploidy changes in this genus, but there are a few reports on the evolution of different karyotypes. For this study, we collected 37samples of a wild population of Amorphophallus muelleri from Myanmar and analysed their karyotypes. The karyotype analysis showedthat it is a population with mixed chromosome numbers and ploidy, with four karyotypes of 2n = 24, 26, 28 and 39. Combining the resultsof this study with previous literature, we speculate that karyotypes with 2n = 26 may be the common ancestor, and further the other threekaryotypes were evolved from this by various ways. As far as we know, this is the first attempt to put forward the hypothesis of theevolution of those four karyotypes together. On the other hand, by using inter-simple sequence repeat marker-based unweighted pair groupmethod with arithmetic mean cluster analysis, we found that these individuals of four karyotypes can be divided into four correspondingcategories, indicating that they have been differentiated at the genome, providing a theoretical basis for future use of these wild germplasmresources.

    • Author Affiliations

       

      CHUFENG ZHAO1 XUAN SHE1 ERXI LIU1 2 NUNUNG HARIJATI3 TENG TENG1 YING DIAO1 SURONG JIN4 ZHONGLI HU1

      1. State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
      2. Institute of Konjac, Enshi Academy of Agricultural Sciences, Enshi, Hubei 445000, People’s Republic of China
      3. Faculty of Mathematics and Natural Sciences, Department of Biology, Brawijaya University, Jl. Veteran Malang 65145, Indonesia
      4. School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei 430070, People’s Republic of China
    • Dates

       
  • Journal of Genetics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.