Cytogenetics of theScilla scilloides complex
- 34 Downloads
Four natural populations ofScilla scilloides Druce were analysed cytogenetically. The Ikeda and Taegu populations were pure populations composed of BB and AABB plants, respectively. The other two were mixed populations; the Shozugawa consisted of ABB, AABB and ABBB and the Nakabaru BB, BBB, ABB, AABB and ABBB. These populations have been maintained by sexual reproduction of sexually stable BB and AABB, and asexual propagation of sexually unstable ABB, BBB and ABBB.
In addition, many kinds of aneuploids were observed at the high frequency of 18.1% in the Shyozugawa and 6.8% in the Nakabaru. Occurrence of these aneuploids would be due to sexual propagation of the sexually unstable ABB and ABBB plants. From the spatial distributions of each type within the mixed populations, it was apparent that sexual propagation of ABB plants was effective in the presence of the sexually stable BB and/or AABB individuals.
KeywordsChromosome Constitution Sexual Propagation Asexual Propagation Supernumerary Chromosome Standard Pairing
Unable to display preview. Download preview PDF.
- Araki, H. 1971. Cytogenetics ofScilla scilloides complex. III. Homeology between genomes A (x=8) and B (x=9). Jap. J. Genet.46: 264–275.Google Scholar
- — 1972a. Cytogenetics ofScilla scilloides complex. IV. Eu- and aneuploid offspring from allotriploids in a natural population. Jap. J. Genet.47: 73–83.Google Scholar
- — 1972b. Cytogenetic study ofScilla scilloides complex from Korea. Jap. J. Genet.47: 147–150 (in Japanese with Eng. abst.)Google Scholar
- — 1975. Cytogenetics ofScilla scilloides complex. V. The relationship between two adjacent natural populations. Nucleus18: 1–6.Google Scholar
- Haga, T. andS. Noda. 1958. Cytogenetic population structure ofScilla scilloides Druce: a complex. Proc. Xth Intern. Congr. Genet.2: 109.Google Scholar
- — and-— 1963. Population structure and dynamics in a complexScilla scilloides (Liliaceae). Proc. XIth Intern. Congr. Genet.1: 150.Google Scholar
- Araki, H. and Haga, T., 1975. Cytogenetics of theScilla scilloides complex. I. Karyotype, genome and population. Genetica45 (in press).Google Scholar
- Morinaga, T. 1932. A preliminary note of the karyological types ofScilla japonica Bak. Jap. J. Genet.7: 202–205.Google Scholar
- Noda, S. 1974. Cytogenetics ofScilla scilloides complex. II. Evidences for homoeologous relation between the genomes. Cytologia39: 777–782.Google Scholar
- Satô, D. 1942. Karyotype alteration and phylogeny in Liliaceae and allied families. Jap. J. Bot.12: 57–161.Google Scholar
- — 1953. Karyotype analysis and law of homologous series. Sci. Pap. Coll. Gen. Educ. Univ. Tokyo3: 41–53.Google Scholar
- Sharma, A.K. andA. Sharma. 1972. Chromosome Techniques. 2nd ed. Butterworths London, and Univ. Park Press, Baltimore.Google Scholar