Taxonomic status of Oryza glumaepatula Steud. II. Hybridization between New World diploids and AA genome species from Asia and Australia
- 69 Downloads
Intraspecific and interspecific crosses were made using O. glumaepatula Steud., O. rufipogon Griff., O. nivara Sharma et Shastry, O. meridionalis Ng, and other diploid accessions from the New World to determine biosystematic relationships among the New World, Asian, and Australian AA genome species. All intraspecific and interspecific combinations produced seeds and hybrids, but at different levels of success. The O. glumaepatula, O. rufipogon, and O. nivara intraspecific hybrids were generally fertile with mean pollen stainability ranging from 75.2% to 80.1% and mean spikelet fertility varying from 32.1% to 87.7%. The O. meridionalis intraspecific crosses showed 3.8% pollen stainability and 0.1% spikelet fertility. Interspecific hybrids showed varying fertilities. Crosses of O. glumaepatula with the New World diploid accessions IRGC 103812 and 105561 produced highly fertile hybrids with 68.0% to 89.7% pollen stainability and 70.8% to 86.6% spikelet fertility. In crosses between O. glumaepatula and the Asian species and other diploid New World accessions IRGC 100961, 103810, and 104386, sterile hybrids were produced with pollen fertility ranging from 0 to 35.1% and spikelet fertility from 0 to 8.2%. IRGC 103810 and 104386 formed fertile hybrids when crossed to O. nivara and O. rufipogon, which were also interfertile. Interspecific crosses of O. meridionalis with the other species produced highly sterile hybrids.
Unable to display preview. Download preview PDF.
- Chevalier, A. 1952. Nouvelle contribution a l'étude systématique des Oryza. Rev. Bot. Appl. Agric. Trop. 12: 1014–1032.Google Scholar
- IRRI, 1994. Program report for 1994. IRRI, Manila, Philippines.Google Scholar
- Juliano, A.B., M.E.B. Naredo & M.T. Jackson. 1998. Taxonomic status of Oryza glumaepatula Steud. I. Comparative morphological studies of NewWorld diploids and Asian AAgenome species. Genet. Res. and Crop Evol.Google Scholar
- Lu, B-R., M.E.B. Naredo, A.B. Juliano & M.T. Jackson. 1998. Taxonomic status of Oryza glumaepatula Steud. III. Assessment of genomic affinity among AA genome species from the New World, Asia, and Australia. Genet. Res. and Crop Evol.Google Scholar
- Martin, C., A. Juliano, H.J. Newbury, B-R Lu, M.T. Jackson & B.V. FordLloyd. 1997. The use of RAPD markers to facilitate the identification of Oryza species within a germplasm collection. Genet. Res. and Crop Evol. 44: 175–183.Google Scholar
- Murashige, T. & F. Skoog. 1962. A revised medium for rapid growth and bioassays with tobacco cultures. Physiol. Plant. 15: 473–497.Google Scholar
- Naredo, M.E.B., A. Juliano, B-R. Lu & M.T. Jackson. 1997. Hybridization of AA genome rice species from Asia and Australia. I. Crosses and development of hybrids. Genet. Res. Crop Evol. 44: 17–23.Google Scholar
- Pental, D. & S.R. Barnes. 1985. Interrelationship of cultivated rices Oryza sativa and O. glaberrima with wild O. perennis complex. Theor. Appl. Genet. 70: 185–191.Google Scholar
- Second, G. 1986. Isozymes and phylogenetic relationship in Oryza. In: Rice Genetics Proceedings of the International Rice Genetics Symposium, IRRI, Philippines. pp. 27–39.Google Scholar
- Vaughan, D.A. 1989. The genus Oryza L.: Current status of taxonomy. IRRI Research Paper Series. 138, Manila, Philippines.Google Scholar
- Yang, S.J., Y.D. Jin, S.K. Lee & G.S. Chung. 1991. Interspecific F1 hybrids resistant to rice blackstreaked dwarf virus through embryo rescue. Research Reports of the Rural Development Administration, Rice. 33: 1–5.Google Scholar
- Yoshida, S., D.A. Forno, J.H. Cock & K.A. Gomez. 1976. Routine procedures for growing rice plants in culture solution. In: Laboratory Manual for Physiological Studies of Rice, IRRI, Manila, Philippines.Google Scholar