期刊
THEORETICAL AND APPLIED GENETICS
卷 120, 期 2, 页码 227-237出版社
SPRINGER
DOI: 10.1007/s00122-009-1074-6
关键词
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资金
- Deutsche Forschungsgemeinschaft [AL387/6-1, AL387/6-2, AL387/6-3, ME931/4-1, ME931/4-2, ME931/4-3, WI 550/3-2, WI 550/3-3, SE611/3-1]
- European Community [QLG2-CT-2001-01097, AGRON-OMICS-LSHG-CT2006-037704]
- Max-Planck-Society
The main objective of this study was to identify genomic regions involved in biomass heterosis using QTL, generation means, and mode-of-inheritance classification analyses. In a modified North Carolina Design III we backcrossed 429 recombinant inbred line and 140 introgression line populations to the two parental accessions, C24 and Col-0, whose F (1) hybrid exhibited 44% heterosis for biomass. Mid-parent heterosis in the RILs ranged from -31 to 99% for dry weight and from -58 to 143% for leaf area. We detected ten genomic positions involved in biomass heterosis at an early developmental stage, individually explaining between 2.4 and 15.7% of the phenotypic variation. While overdominant gene action was prevalent in heterotic QTL, our results suggest that a combination of dominance, overdominance and epistasis is involved in biomass heterosis in this Arabidopsis cross.
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