QTL mapping

Detection of quantitative trait loci for kernel oil and protein concentration in a B73 and Zheng58 maize cross

Z. Yang, Li, X., Zhang, N., Zhang, Y. N., Jiang, H. W., Gao, J., Kuai, B. K., Ding, Y. L., Huang, X. Q., Yang, Z., Li, X., Zhang, N., Zhang, Y. N., Jiang, H. W., Gao, J., Kuai, B. K., Ding, Y. L., and Huang, X. Q., Detection of quantitative trait loci for kernel oil and protein concentration in a B73 and Zheng58 maize cross, vol. 15, p. -, 2016.

Maize (Zea mays L.) is one of the most important food crops throughout the world, and provides oil and proteins to humans and livestock. Kernel oil and protein content in maize are two complex quantitative traits. In order to identify quantitative trait loci (QTL) controlling oil and protein concentration in maize kernels, and to evaluate their genetic effects, QTL analysis was conducted on an F3:4 population derived from a cross between an inbred line with a low oil and protein concentration (Zheng58) and an inbred line with a higher oil and protein concentration (B73).

Influence of various quantitative trait loci (QTL) mapping methods on the mapping accuracy under varying heritability levels

C. F. Su, Liu, Z. B., and Li, Y. G., Influence of various quantitative trait loci (QTL) mapping methods on the mapping accuracy under varying heritability levels, vol. 14, pp. 13003-13012, 2015.

The study of quantitative trait effects is of great significance for molecular marker-assisted breeding. The accuracy of quantitative trait loci (QTL) mapping is the key factor affecting marker-assisted breeding, and is extremely significant. The effect of different heritability rates (10, 30, 50, 70, and 90%) on the accuracy of QTL mapping of five recombinant inbred lines (RILs) were analyzed via computer simulation. RILs display additive and epistatic genetic effects.

Identification of quantitative trait loci conferring blast resistance in Bodao, a japonica rice landrace

J. Huan, Bao, Y. M., Wu, Y. Y., Zeng, G. Y., He, W. W., Dang, L. L., Wang, J. F., and Zhang, H. S., Identification of quantitative trait loci conferring blast resistance in Bodao, a japonica rice landrace, vol. 13, pp. 9756-9765, 2014.

Bodao, a japonica landrace from the Taihu Lake region of China, is highly resistant to most Chinese isolates of Magnaporthe oryzea, a form of rice blast. To effectively dissect the influence of genetics on this blast resistance, a population of 155 recombinant inbred lines (F2:8) derived from a cross of Bodao x Suyunuo was inoculated with 12 blast isolates. Using a quantitative trait locus (QTL) mapping approach, 13 QTL on chromosomes 1, 2, 9, 11, and 12 were detected from Bodao.

Dynamic QTL analysis for fruit lycopene content and total soluble solid content in a Solanum lycopersicum x S. pimpinellifolium cross

Y. D. Sun, Liang, Y., Wu, J. M., Li, Y. Z., Cui, X., and Qin, L., Dynamic QTL analysis for fruit lycopene content and total soluble solid content in a Solanum lycopersicum x S. pimpinellifolium cross, vol. 11, pp. 3696-3710, 2012.

Fruit lycopene content and total soluble solid content are important factors determining fruit quality of tomatoes; however, the dynamic quantitative trait loci (QTL) controlling lycopene and soluble solid content have not been well studied. We mapped the chromosomal regions controlling these traits in different periods in F2:3 families derived from a cross between the domestic and wild tomato species Solanum lycopersicum and S. pimpinellifolium.

An interspecific QTL study of Drosophila wing size and shape variation to investigate the genetic basis of morphological differences

B. P. Matta and Bitner-Mathé, B. C., An interspecific QTL study of Drosophila wing size and shape variation to investigate the genetic basis of morphological differences, vol. 9, pp. 2032-2049, 2010.

The Drosophila wing has been used as a model in studies of morphogenesis and evolution; the use of such models can contribute to our understanding of mechanisms that promote morphological divergence among populations and species. We mapped quantitative trait loci (QTL) affecting wing size and shape traits using highly inbred introgression lines between D. simulans and D. sechellia, two sibling species of the melanogaster subgroup. Eighteen QTL peaks that are associated with 12 wing traits were identified, including two principal components.

Subscribe to QTL mapping