Genomic regions for yield and yield parameters in Chinese winter wheat (Triticum aestivum L.) genotypes tested under varying environments correspond to QTL in widely different wheat materials
PLANT SCIENCE, 175 (3):
226-232 (2008)Abstract
Field trials with a population of 108 doubled haploid (DH) lines of
bread wheat (Triticum aestivum L.) derived from a cross between the
Chinese winter wheat cultivars CA9613 and H1488 were carried out at
Beijing (China) in 2000/2001 and 2001/2002. In addition, a field trial
and a pot experiment were carried out at the experimental field
stations of Giessen University (Germany) in the vegetation periods
2004/ 2005 and 2006/2007. Phenotypic data for major agronomic
yield-related traits, i.e. grain weight per ear (GWE), grain number per
ear (GNE), plant height and thousand-grain weight (TGW), were recorded
in all experiments. In addition, biomass weight per tiller and ear
weight were evaluated in the two field trials at Beijing. Based on the
phenotypic data and a genetic map comprising 168 SSR markers, an
analysis of quantitative trait loci (QTL) was carried out for yield and
yield parameters using the composite interval mapping (CIM) approach. A
total of 30 QTL were detected for these tr