Intrapopulation and individual polymorphism of heterochromatin segments in Trillium camschatcense Ker-Gawl

被引:7
作者
Belyayev, A
Punina, E
Grif, V
机构
[1] Botanical Institute, The Russian Academy of Science, St. Petersburg
关键词
D O I
10.1080/00087114.1995.10797325
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The present work reports the study of the topography and the size of the heterochromatin segments (H-segments) in the chromosomes of the plant of Trillium camschatcense Ker.-Gawl. from a Kamchatka population with the help, of a special chromosome analysis, computer program. The staining techniques used are C-banding and fluorochroming with Hoechst 33258. A high level of hereditary polymorphism as well as somatic chromosome aberrations appearing de novo has been found. The heterochromatin of Trillium camschatcense appears to be of a polymorphic labile system creating a wide variation spectrum within the population. It is postulated that it could be the onset of divergences into separate forms and the subsequent creation of new species.
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页码:157 / 164
页数:8
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