NUCLEAR DNA CONTENT, CHROMATIN ORGANIZATION AND CHROMOSOME-BANDING IN BROWN AND YELLOW SEEDS OF DASYPYRUM-VILLOSUM (L) P CANDARGY

被引：26

作者：

CREMONINI, R

COLONNA, N

STEFANI, A

GALASSO, I

PIGNONE, D

机构：

[1] SCUOLA SUPER SANT ANNA, I-56127 PISA, ITALY

[2] CNR, IST GERMOPLASMA, I-70123 BARI, ITALY

来源：

HEREDITY | 1994年 / 72卷

关键词：

CHROMATIN ORGANIZATION; CHROMOSOME BANDING; DASYPYRUM VILLOSUM; FLUOROCHROMES; KERNELS;

D O I：

10.1038/hdy.1994.53

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Banding patterns of metaphase chromosomes and nuclear DNA content in root meristematic cells of yellow and brown seeds of Dasypyrum villosum were determined. Microdensitometric evaluation of nuclear absorptions at different thresholds of optical density after Feulgen reaction indicated the organization of the chromatin in interphase nuclei, and allowed an evaluation of the amount of heterochromatin. These results were compared with those obtained after the application of banding techniques.

引用

页码：365 / 373

页数：9

共 35 条

[1] QUANTITATIVE VARIATIONS OF NUCLEAR-DNA DURING PLANT DEVELOPMENT - A CRITICAL ANALYSIS [J].