Abstract
To determine the genomic constitution of Oryza meridionalis Ng (2n=2x=24) and to estimate genomic affinity between Asian and Australian wild species of rice containing the AA genomes, chromosome pairing was analyzed at metaphase I in O. meridionalis, O. rufipogon Griff. (2n=2x=24), O. nivara Sharma et Shastry (2n=2x=24), O. sativa f. spontanea Rosch, and their artifical hybrids. The Oryza parental species and their F1 hybrids showed normal meiosis, but slightly reduced chiasma fequency was observed in the hybrids. It is concluded from the cytological analysis that (i) the Australian O. meridionalis contains the AA genome which has very high affinity to that in the Asian AA genome wild species of rice; (ii) chromosome structual changes, such as inversions and reciprocal translocations, have occurred in the genomes of the different species studied.
Similar content being viewed by others
References
Chu, Y.E., H. Morishima & H. Oka, 1969. Reproductive barriers distributed in cultivated rice species and their wild relatives. Japan J Genetics 44: 207-223.
Katayama, T., 1967. Cytogenetical studies on Oryza.-F1 hybrids of the crosses BBCC×CC, BBCC×a diploid strain of O. punctata and CC × a diploid strain of O. punctata. Proc Japan Acad 43: 327-331.
Katayama, T., 1992. Intersectional hybridization between Oryza australiensis Domin. and O. ridleyi Hook. Japan J. Genetics 67: 415-417.
Katayama, T. & W. Onizuka, 1979. Intersectional F1 plants from Oryza sativa × O. ridleyi and O. sativa × O. meyeriana. Japan J Genetics 54: 43-46.
Li, H.W., T.S. Wang, C.C. Chen & W.H. Wang, 1962. Cytogenetic studies of Oryza sativa L. and its related species. 2. A preliminary note on the interspecific hybrids within the section Sativa Roschev. Bot Bull Acad Sin 3: 209-219.
Lu, B.R. & R. von Bothmer, 1990. Intergeneric hybridization between Hordeum and Asiatic Elymus. Hereditas 112: 109-116.
Morinaga, T., 1941. Cytogenetical studies on Oryza sativa L. V. The cytogenetics of F1 hybrid of O. sativa L. and O. latifolia Desv Jap J Bot 11: 461-478.
Morinaga, T., 1943. Cytogenetical studies on Oryza sativa L. VI. The cytogenetics of F1 hybrid of O. minuta Presl. and O. latifolia Desv. Japan J Botany 12: 347-357.
Morishima, H., 1969. Phenetic similarity and phylogenetic relationship among strains of Oryza perennis, estimated by methods of numerical taxonomy. Evolution 23: 429-443.
Naredo, M.E.B. & D.A. Vaughan, 1992. The chromosome number of Oryza schlechteri Pilger. IRRN 17: 3.
Naredo, M.E.B., A.B. Juliano, B.R. Lu & M.T. Jackson, 1996. Hybridization of AA genome rice species from Asia and Australia. I. Crosses and development of hybrids. Genetic Resources and Crop Evolution 44: 17-24.
Nezu, M.,T.C. Katayama & H. Kihara, 1960. Genetic study of the genus Oryza I. Crossability and chromosomal affinity among 17 species. Seiken Zihô. 11: 1-11.
Ng, N.Q., T.T. Chang, J.T. Williams & J.G. Hawkes, 1981a. Morphological studies of Asian rice and its related wild species and the recognition of a new Australian taxon. Bot J Linn Soc 16: 303-313.
Ng, N.Q., J.G. Hawkes, J.T. Williams & T.T. Chang, 1981b. The recognition of a new species of rice (Oryza) from Australia. Biol J Linn Soc 82: 327-330.
Ni, P.C., M.F. Li, J.H. Shen & J.F. Cun, 1988. A preliminary study on characteristics of progeny in cross between O. meyeriana and rice (O. sativa). Acta Agron Sin 14: 86-88 (Chinese).
Nowick, E.M., 1986. Chromosome pairing in Oryza sativa L. × O. latifolia Desv. hybrids. Can J Genet Cytol 28: 278-281.
Ogawa, T. & T. Katayama, 1971. Cytogenetical studies on the genus OryzaV. Chromosome pairing in the interspecific hybrid between genomes A and B (O. punctata). Japan J Breeding 21: 151-154.
Pan, Y.B., 1983. The meiotic chromosome behavior of Oryza nivara Asian, Oryza nivara Australian and their hybrid. Ann Report for Inst of Genet Acad Sin p.p. 63.
Second, G., 1985. A new insight into the genome differentiation on Oryza L. through isozymic studies. In: A.K. Sharma & A. Sharma (Eds), Advances in Chromosome and Cell Genetics, p.p. 45-78, Oxford and IBH Publ. Co., New Delhi.
Snow, R., 1963. Alcoholic hydrochloric acid-carmine as stain for chromosome squash preparation. Stain Technol 38: 9-13.
Vaughan, D.A., 1989. The genus Oryza L.: current status of taxonomy. IRRI Research Paper Series. 138.
Vaughan, D.A. 1994. The wild relative of rice: A genetic resources handbook. IRRI, Manila, Philippines.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lu, BR., Naredo, M.E.B., Juliano, A.B. et al. Hybridization of AA genome rice species from Asia and Australia II. Meiotic analysis of Oryza meridionalis and its hybrids. Genetic Resources and Crop Evolution 44, 25–31 (1997). https://doi.org/10.1023/A:1008699705881
Issue Date:
DOI: https://doi.org/10.1023/A:1008699705881