ISSN:
1432-2242
Keywords:
Vicia faba
;
Duplication
;
Deletion
;
Interchange heterozygotes
;
Pseudoaneuploidy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary From eight pairs of crosses between differently reconstructed diploid karyotypes of Vicia faba, the progeny after selfing of plants heterozygous for both parental chromosome reconstructions were inspected for occurrence and transmission of duplications and deletions of defined chromosome segments, comprising together about one third of the metaphase genome length. The duplications and deletions studied involved either one or more chromosome segments of the respective karyotype (0.8%–9.1% of the metaphase length). They arose during meiosis in double heterozygotes by crossing over between partially homologous chromosomes or by mis-segregation from multivalents. While most duplications, provided they were not accompanied by deletions and in dependence on the segment involved, were viable and transmissible, even in homozygous state, deletions had lethal effects on gametes of both sexes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00288833
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