The Japanese Journal of Genetics
Online ISSN : 1880-5787
Print ISSN : 0021-504X
ISSN-L : 0021-504X
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Intersectional hybridization between Oryza australiensis Domin and O. ridleyi Hook
Taira KATAYAMA
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1992 Volume 67 Issue 5 Pages 415-417

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Abstract
One hybrid embryo of intersectional origin between Oryza australiensis Domin (W008, 2n=24) and O. ridleyi Hook. (W0001, 2n=48) was successfully obtained. The Fl hybrid had the expected chromosome number of 36 in the somatic cells. The average of meiotic chromosome pairing was 0.24II+34.27I. Meiotic irregularities, such as bridge, laggards and unequal separation of univalents were observed at almost all PMCs. This analysis leads to the conclusion that the two genomes of O. ridleyi differ from the EE genome of O. australiensis.
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© 1992 by The Genetics Society of Japan
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