NUCLEOLAR ORGANIZER FUNCTION IN DEVELOPING POTATO CALLI

被引：2

作者：

PIJNACKER, LP

FERWERDA, MA

机构：

[1] Department of Genetics, Centre of Biological Sciences, University of Groningen, AA Haren, NL-9750

来源：

THEORETICAL AND APPLIED GENETICS | 1991年 / 82卷 / 05期

关键词：

NUCLEOLAR ORGANIZER FUNCTION; POTATO; CHROMOSOME; ROOT MERISTEM; CALLUS;

D O I：

10.1007/BF00226794

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The number of transcriptionally active nucleolar organizer regions (NORs) of one monohaploid, one dihaploid and two tetraploids of Solanum tuberosum and one diploid S. phureja was established by the silver staining of metaphases in root meristems and in in vitro-cultured leaf explants. The maximum number of active NORs per cell was one per haploid set of chromosomes. One or more NORs could be inactive in cells of the tetraploid meristems and in non-polyploidized and polyploidized cells of the dihaploid and tetraploid explants. Inactivation was determined by genotype and tissue and could remain constant during in vitro culture.

引用

页码：587 / 592

页数：6

共 26 条

[1] METHYLATION OF RIBOSOMAL-RNA GENES IN PETUNIA-HYBRIDA PLANTS, CALLUS-CULTURES AND REGENERATED SHOOTS [J].