• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

基于流式细胞术对朱砂根种质资源基因组大小的测定

Flow Cytometric Determination on Genome Size of Ardisia crenata Germplasms

  • 摘要:
      目的  基于流式细胞术初步探索测定朱砂根基因组大小的方法和流程,为朱砂根基因组文库的建立、基因组全序列测定及其基因组学研究等工作的开展提供基础数据。
      方法  以24份朱砂根(Ardisia crenata)种质资源为供试材料,包括22个人工选育品种和2个野生种质资源,并以番茄(Lycopersicon esculentum)作为内参样本,利用流式细胞术对朱砂根基因组大小进行测定。
      结果  24份朱砂根基因组大小(C值)为1.77~2.41 Gb,平均大小1.87 Gb;其中玛瑙红(Z-17)、霞珠(Z-20)、珠塔(Z-22) C值最小,均为1.77 Gb,赤丹 C最大,为2.41Gb,部分品种间基因组大小存在一定程度的差异。
      结论  首次测定朱砂根种质资源的基因组大小,其研究结果可为朱砂根基因组文库的建立、基因组全序列测定及其基因组学研究等工作的开展提供基础数据。

     

    Abstract:
      Objective  Genome sizes of the economically, medicinally, and ornamentally valuable Ardisia crenata were determined using flow cytometry.
      Methods   Genome sizes of 22 selectively bred cultivars and two wild A. crenata germplasms, along with Lycopersicon esculentum as internal reference, were determined by flow cytometry.
      Results  The sizes ranged from 1.77 Gb to 2.41 Gb averaging 1.87 Gb with the smallest C-value of 1.77 Gb found on Agate Red (Z-17), Kasumi Pearl (Z-20), and Zhu Ta (Z-22), while the largest of 2.41 Gb on Chidan. Variations existed among the germplasms.
      Conclusion   For the first time, the genome sizes of various A. crenata were determined to be available for library construction and genomics studies on the valuable natural resource.

     

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