Pánková K., Milec Z., Simmonds J., Leverington-Waite M., Fish L., Snape J. W
EUPHYTICA
164:
779 - 787,
2008
Keywords:
Chromosome 3B, Earliness per se, Genetic mapping, Photoperiod response, Vernalization, Wheat
Abstract:
The single chromosome substitution lines
of chromosome 3B of the Czech alternative wheat variety Česká přesívka (CP 3B) into two spring varieties
Zlatka and Sandra, revealed clear differences in flowering time compared to the recipient varieties. To map
this gene(s), recombinant substitution lines for chromosome 3B were produced from crosses of the substitution lines with their recipient parents and genetic maps
developed using SSR markers. Two populations were
mapped, Sandra//Sandra 3B/Sandra (CP 3B) and
Zlatka//Zlatka/Zlatka (CP 3B). Combining the genotype data with phenotype data on flowering time in five
independent experiments under natural long day or
controlled short day conditions revealed a single flowering time QTL. This gene had an additive effect of 1–
6 days, depending on environment and genetic background, and was mapped in both populations to a
position in the region of marker Xbarc164 near
the centromere on the long arm of 3B. Comparisons of
the genetic maps with other 3B maps developed by the
authors indicated that the QTL may be homologous to
a QTL segregating in UK germplasm.
Fulltext: contact IEB authors
IEB authors: Zbyněk Milec
