CYTOGENETIC INVESTIGATIONS ON THE HOLOCENTRIC CHROMOSOMES OF TETRANEURELLA-AKINIRE (SASAKI) (HOMOPTERA, PEMPHIGIDAE)

被引：16

作者：

MANICARDI, GC

GAUTAM, DC

机构：

[1] Dipartimento di Biologia Animale, Università di Modena, Modena

[2] Dipartimento di Biologia Animale, Università di Modena, Modena

[3] Department of Bioscience, Himachal Pradesh University, Shimla

来源：

CARYOLOGIA | 1994年 / 47卷 / 02期

关键词：

D O I：

10.1080/00087114.1994.10797293

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The karyotype of the root aphid Tetraneurella akinire was analysed by means of C, G, and NOR banding. The overall base pair distribution was investigated after CMA, and DAPI fluorochrome staining. Both C and G treatments revealed a well defined banding pattern on the X and A1 chromosomes. C-bands showed a marked polymorphism in both size and number, even within the same individual. NOR banding produced a precipitation of silver on one telomere of the X chromosome, which also showed bright fluorescence after CMA, staining. Treatment with DAPI uniformly stained all chromosomes. Neither CMA3 nor DAPI showed bright fluorescence overlapping the C-positive bands. It can be concluded that T. akinire chromosomes present a cluster of GC-rich DNA sequences located on one telomere of the X chromosome, whereas the AT - sequences are regularly arranged along the chromosome axes and not grouped into well defined clusters.

引用

页码：159 / 165

页数：7

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[21] INTERSPECIFIC AND INTRASPECIFIC HETEROCHROMATIN VARIATION DETECTED BY RESTRICTION ENDONUCLEASE DIGESTION IN 2 SIBLING SPECIES OF THE ANOPHELES-MACULIPENNIS COMPLEX [J].