PATTERNS OF ENDOPOLYPLOIDY AND 2C NUCLEAR-DNA CONTENT (FEULGEN) IN SCILLA (LILIACEAE)

被引:25
作者
FRISCH, B
NAGL, W
机构
[1] Dept. of Biology, The University, Kaiserslautern, D-3049
关键词
cell differentiation; differential DNA replication; DNA content; endopolyploidy; Liliaceae; Scilla decidua; tissue-specific DNA content;
D O I
10.1007/BF00984258
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The Feulgen-DNA content of 3558 nuclei from 21 different tissues and organs of S. decidua was measured by a scanning cytophotometer interfaced to a computer. The basic nuclear DNA content (2 C value) was 13.62 pg, and 71% of the nuclei were polyploid. The highest DNA values were found in the antipodal cells of the ovule, and the elaisomes of the seeds (512 C). In addition to polyploidy, the 2 C values exhibited tissue-specific variation which was statistically significant (0.05% level of probability), It is suggested that differential DNA replication and endopolyploidization may be basic factors in the complex mechanism of cell and tissue differentiation.
引用
收藏
页码:261 / 276
页数:16
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