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Euphytica

, Volume 117, Issue 2, pp 143–149 | Cite as

Induction of cytoplasmic male sterility in the seed progeny derived from artificially-synthesized interspecific chimera in Brassica

  • Y. Hirata
  • T. Motegi
  • Y. Takeda
  • K. Morikawa
Article

Abstract

We produced artificial interspecific chimeras by in vitro grafting, and obtained cytoplasmic male sterile (CMS) variants in the seed progenies derived from backcrossing the chimera with one of the mother plants, B. campestris cv. Komatsuna. The induced CMS has been stably inherited by crossing it with `Komatsuna', not with `Ruby Ball' cabbage. The nuclear component of CMS is complete `Komatsuna' type in morphology, chromosome number (2n = 20) and Southern blot using ribosomal 17S RNA gene as a probe. PCR analysis by using mitochondrial atpA primer showed the complete `Ruby Ball' type, suggesting nuclear-cytoplasmic exchange. However, Southern blot patterns were different among those of the CMS and both parents by using atpA. Recombination or some unknown change is supposed in the mitochondrial genome via the processes of synthesis and propagation of the chimeras.

atpA Brassica chimera cytoplasmic male sterility mitochondria 

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Y. Hirata
    • 1
  • T. Motegi
    • 1
  • Y. Takeda
    • 1
  • K. Morikawa
    • 1
  1. 1.Faculty of AgricultureTokyo University of Agriculture and Technology, FuchuTokyoJapan

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