Flowering-time QTL in crosses of Lz-0 with Ler and Col.

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Flowering-time QTL in crosses of Lz-0 with Ler and Col. Flowering-time QTL in crosses of Lz-0 with Ler and Col. (A) Flowering-time distribution in an F2 population derived from a cross of Lz-0 with Ler, grown in long days. Parental means and ranges are denoted by arrows and horizontal lines, respectively. (B) Flowering-time QTL maps for chromosomes 1, 3, and 5 on the same population genotyped for 32 markers spanning the genome. QTL likelihoods were calculated with QTL Cartographer (see materials and methods). The dashed line corresponds to a P = 0.05 threshold set by permutations (LOD 3.06). No evidence for QTL was apparent on chromosomes 2 and 4. Solid diamonds indicate marker locations. (C) Flowering times of 561 F2 individuals derived from a cross of Lz-0 with Columbia, grown in long days. Tissue from the 50 earliest and the 50 latest individuals (solid bars) was used for XAM. Ranges and mean values of parental lines are indicated by horizontal lines and arrows, respectively. (D) XAM results for four comparisons between two independent replicates from the earliest 50 plants and two independent replicates from the latest 50 plants. Positive allele frequency indicates bias to Col alleles, negative toward Lz-0 alleles. Roman numerals indicate chromosomes. Jonathan D. Werner et al. Genetics 2005;170:1197-1207 Genetics Society of America