VARIABILITY FOR NUCLEAR RIBOSOMAL GENES WITHIN THEOBROMA-CACAO

被引：25

作者：

LAURENT, V ^{[1
]}

RISTERUCCI, AM ^{[1
]}

LANAUD, C ^{[1
]}

机构：

[1] BIOTROP,CIRAD CP,BP 5035,F-34032 MONTPELLIER,FRANCE

来源：

HEREDITY | 1993年 / 71卷

关键词：

GENETIC DIVERSITY; RFLP; RIBOSOMAL RNA GENES; THEOBROMA-CACAO;

D O I：

10.1038/hdy.1993.111

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Restriction fragment length of the rRNA genes was studied in Theobroma cacao using heterologous rDNA probes. One hundred and ninety-two individuals including both cultivated and wild clones were analysed. DraI and EcoRI restriction sites were mapped. Both length heterogeneity and restriction site polymorphism have been found. Fifteen different types of rDNA units have been characterized. As opposed to previous enzymatic studies, the rRNA gene analysis indicates a clear distinction of the three genetic groups Criollo, Forastero and Trinitario within cocoa and points out the hybrid origin of Trinitario.

引用

页码：96 / 103

页数：8

共 25 条

[1]

ALLEN JB, 1987, COCOA GROWERS B, V39

[2] THE WHEAT RIBOSOMAL DNA SPACER REGION - ITS STRUCTURE AND VARIATION IN POPULATIONS AND AMONG SPECIES [J].