QTL of Physiological and Morphological Traits of Flag Leaf Identified in Barley
March 25, 2015| |
Physiological and morphological traits of flag leaf play are crucial in determining crop grain yield and biomass. To understand genetic basis controlling physiological and morphological traits of flag leaf, Dongfa Sun of the Huazong Agricultural University developed a double haploid (DH) population from the cross of Huaai 11 and Huadamai 6 and used these to detect quantitative trait locus (QTL) underlying physiological and morphological traits at the pre-filling stage.
Thirty-eight QTLs distributed on chromosome 1H, 2H, 3H, 4H, 6H and 7H were detected. The QTLs on chromosome 2H were associated with net photosynthetic rate, stomatal conductance, flag leaf area, flag leaf length, flag leaf width, relative chlorophyll content and leaf nitrogen concentration. The two markers that researchers used, Bmag829 and GBM1218, may be useful for marker assisted selection (MAS) in barley breeding.
To learn more on the study, read the full article on the BioMed Central Website.
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