Identification of Paracentric Inversions in Capsicum annuum (Solanaceae)

• Cequea Hernán

  Departamento de Biología, Escuela de Ciencias, Universidad de Oriente

• de Cequea Damelis Díaz

  Departamento de Biología, Escuela de Ciencias, Universidad de Oriente

• Imery José

  Departamento de Biología, Escuela de Ciencias, Universidad de Oriente

抄録

Meiotic analyses at pachytene, anaphase I, telophase I, prophase II, metaphase II and the tetrad stage were carried out on several Capsicum annuum L. plants. The bivalents showed regular chromosome pairing and a nonrandom chiasmata distribution. The mean number of chiasmata per cell were 21.62. Aberrations such as reverse inversion loops in pachytene, dicentric bridghes and fragments in pollen mother cells at anaphase I, telophase I, prophase II, metaphase II and 4, 5, 6 and 7 microspores at the tetrad stage, indicated that these plants were heterozygous for a paracentric inversion, which may involve 1 or more homologous chromosomes. The 84.04% fertility showed that a simple or double crossing-over took place within reverse inversion loops between inverted and normal chromosome segments at pachytene, which reduced fertility by the formation of genetically abnormal gametes.

収録刊行物

• ＣＹＴＯＬＯＧＩＡ

  ＣＹＴＯＬＯＧＩＡ 71 (4), 325-330, 2006

  公益財団法人 日本メンデル協会

キーワード

• Paracentric inversions
• Fertility
• Meiosis
• Chromosomes
• Crossing-over

詳細情報

• CRID: 1390282679082709888
• NII論文ID: 130004447933
• DOI: 10.1508/cytologia.71.325
• ISSN: 13487019
• ISSN: 00114545
• Web Site: http://www.jstage.jst.go.jp/article/cytologia/71/4/71_4_325/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可