ISSN:
1573-5060
Schlagwort(e):
sugarbeet
;
Beta vulgaris
;
isozyme
;
linkage
;
annuality
;
hypocotyl color
;
pollen fertility restorer
;
monogermity
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Summary An analysis of linkage in sugarbeet (Beta vulgaris L.) was conducted for nine isozyme loci, Ak 1, Gdh 2, Idh 1, Lap, Mdh 1, Mdh 3, Pgi 2, Pgm 1,and Skdh 2,and four marker loci, annuality (B), red hypocotyl-color (R), pollen fertility restorer (X), and monogermity (m). Four linkage groups were identified; R-B-Idh 1, Gdh 2-Mdh 1, Ak 1 -Lap, and Mdh 3-Pgm 1.In addition, X was linked to Mdh 1and Skdh 2with a recombination value of 13.4% and 34.7%, respectively, and m was linked to Pgm 1with a recombination value of 35.8%. Pgi 2was inherited independently of the four linkage groups. This locus showed a skewed ratio in F2 progeny of a cross between self-compatible and self-incompatible lines and the allele derived from self-incompatible parents decreased markedly. On the other hand, the expected segregation ratio was observed in the backcrossed progeny and also in F2 progeny of a cross between self-compatible lines. The results obtained suggest that Pgi 2may be linked to a self-compatibility locus (S f)and the two loci may be assigned to an additional linkage group.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00023516
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