ON THE INFLUENCE OF DECREASED CHIASMA FREQUENCY ON PREFERENTIAL MI-PAIRING BEHAVIOR OF RYE CHROMOSOMES IN WHEAT-RYE DERIVATIVES

被引：6

作者：

BENAVENTE, E ^{[1
]}

ORELLANA, J ^{[1
]}

机构：

[1] UNIV COMPLUTENSE MADRID,FAC CC BIOL,DEPT GENET,E-28040 MADRID,SPAIN

来源：

CHROMOSOMA | 1992年 / 101卷 / 5-6期

关键词：

D O I：

10.1007/BF00346016

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Meiotic behaviour of identical and homologous rye chromosomes was investigated in colchicine-induced duplicated meiocytes obtained from different wheat-rye derivatives. A great reduction in the amount of metaphase I (MI) associations accompanied by a strong tendency for identical over homologous non-identical preferential MI pairing was found in all of the four rye chromosome arms analysed. Both of these features appear to be associated with a more distal chiasma localization where the presence of an interstitial C-band has allowed two distinct regions within the same chromosome arm to be studied separately. On the other hand, the MI pairing failure observed for the rye chromosomes under analysis does not seem to be an effect of telomeric or interstitial C-heterochromatin.

引用

页码：365 / 373

页数：9

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