CYTOGENETICAL STUDIES ON THE GENUS ORYZA IX. THE F<sub>1</sub> HYBRIDS FROM SYNTHESIZED AMPHIPLOID×SPECIES WITH THE BBCC GENOMES

TAIRA KATAYAMA

doi:10.1266/jjg.52.301

The Japanese Journal of Genetics

Online ISSN : 1880-5787
Print ISSN : 0021-504X
ISSN-L : 0021-504X

CYTOGENETICAL STUDIES ON THE GENUS ORYZA

IX. THE F₁ HYBRIDS FROM SYNTHESIZED AMPHIPLOID×SPECIES WITH THE BBCC GENOMES

TAIRA KATAYAMA

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JOURNAL FREE ACCESS

1977 Volume 52 Issue 4 Pages 301-307

DOI https://doi.org/10.1266/jjg.52.301

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Abstract

Synthesized amphiploid strains derived from an intermediate punctata-eichingeri strain (2x, CC, W1525)×O. punctata (2x, W1514) and O. punctata (2x, W1515)×O. collina (2x, CC, W0006) were crossed with strains having the BBCC genomes. The number of bivalent per cell at MI of the tetraploid F₁ hybrids (KB-lines) ranged from 20 to 24 with a mean of 22.3 or 23.3. This suggests that the diploid punctata strains served as the donor of the B genome for the species having the B and C genomes.

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