Cytogenetic and Embryologic Analyses of the Mechanism of Parthenogenesis Induced by 1BL/1RS Male Sterile Lines in Wheat
  • Metaadatok
Tartalom: http://real.mtak.hu/35781/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published

Type = Article
Cím:
Cytogenetic and Embryologic Analyses of the Mechanism of Parthenogenesis Induced by 1BL/1RS Male Sterile Lines in Wheat
Létrehozó:
Niu, N.
Song, Y. L.
Wei, F.
Liu, H. M.
Ma, S. M.
Zhao, H. Y.
Zhang, G. S.
Kiadó:
Akadémiai Kiadó
Dátum:
2016
Téma:
S1 Agriculture (General) / mezőgazdaság általában
Tartalmi leírás:
In this study, we employed electron microscopy to investigate the cytogenetic and embryologic mechanisms of parthenogenesis induced in the 1BL/1RS male sterile lines of wheat. Analysis of the root tips and acid polyacrylamide gel electrophoresis indicated that all of the male sterile lines and their maintainer lines were 1BL/1RS translocation lines, whereas the restorer lines were non-1BL/1RS translocation lines. Furthermore, the chromosomes of 1BL/1RS wheat lines with T. aestivum cytoplasm and Aegilops cytoplasm (include Ae. kotschyi, Ae. ventricosa, Ae. variabilis) paired abnormally at different rates during meiotic metaphase I (MMI). The translocated segment size of the 1RS chromosome and the specific nuclear–alloplasm interaction impaired the pairing of homologous chromosome in the background of the specific Aegilops cytoplasm at MMI. In addition, the frequency of abnormal chromosomal pairing was directly affected by the frequency of haploid production induced by parthenogenesis. The results of this study provide significant insights into the mechanism of parthenogenesis, which is probably due to the abnormal fertilization of synergid cells in alloplasmic 1BL/1RS wheat.
Nyelv:
angol
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Niu, N. and Song, Y. L. and Wei, F. and Liu, H. M. and Ma, S. M. and Zhao, H. Y. and Zhang, G. S. (2016) Cytogenetic and Embryologic Analyses of the Mechanism of Parthenogenesis Induced by 1BL/1RS Male Sterile Lines in Wheat. Cereal Research Communications, 44 (2). pp. 187-197. ISSN 0133-3720
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