Sex-conversion from male to female during somatic embryogenesis from protoplasts in asparagus (Asparagus officinalis L.)

Tomoo Maeda, Yukio Ozaki, Takahiro Sonoda, Nobuhisa Inoue, Kumiko Narikiyo, Hiroshi Okubo

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Sex-converting mutation from male to female was identified during somatic embryogenesis from protoplasts in asparagus. Although modification of allozyme genotypes from heterozygous to homozygous occurred in three loci, Mdh-1, Mdh-2 and Idh-1, accompanied with sex-conversion, genotypes of sex-converted and control plants in Pgm-1 and Skdh-1 loci were identically heterozygous. Relative DNA contents of sex-converted and control plants estimated by flow cytometric analysis were similar, and gametophytic fertility of the sex-converting mutant as female parent was also confirmed by artificial pollination. From these results, the sex-conversion in the current study might be the result of the somatic mutation, such as somatic crossing-over, one of the chromosomal rearrangements.

Original languageEnglish
Pages (from-to)585-592
Number of pages8
JournalJournal of the Faculty of Agriculture, Kyushu University
Issue number2
Publication statusPublished - Oct 2005


All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

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