ISSN:
1573-5060
Schlagwort(e):
Brassica oleracea
;
broccoli
;
cauliflower
;
cabbage
;
hybrids
;
self-incompatibility
;
seed purity
;
isozymes
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Summary Isozyme phenotypes at four known genetic loci were determined in parental inbreds and corresponding F1 hybrid seed lots of four commercial broccoli, two cauliflower, and two cabbage varieties to determine seed purity. Most inbred lines were completely homozygous at all four loci but differed with respect to alleles at one to three loci. Several parental inbreds of the cabbage hybrids were segregating at two to three of the loci. Models were developed to estimate seed purity in cases where parents were either fixed or segregating at diagnostic loci. Estimates of contamination ranged from 1.5 to 40.1%. These estimates were comparable with those from commercial grow-outs with a tendency for the former estimates to be higher. It was concluded that more stable SI alleles or genetic male sterility should be used to reduce contamination. Electrophoretic variation was further discussed as a tool for selecting homozygous plants and for strong self-incompatibility.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00021659
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