Recombinant inbred line

Genetic analysis of maize kernel thickness by quantitative trait locus identification

S. S. Wen, Wen, G. Q., Liao, C. M., and Liu, X. H., Genetic analysis of maize kernel thickness by quantitative trait locus identification, vol. 14, pp. 9858-9864, 2015.

Kernel thickness is one of the most important traits in kernel structure, and is related to yield. To ascertain its genetic information more clearly, an immortal recombinant inbred line segregation population was used to map the quantitative trait loci (QTLs) for kernel thickness. As a result, two QTLs were identified on chromosome 9; both of them had negative additive effects, and could decrease kernel thickness to some extent. The QTLs explained 25.8% of the total phenotypic variation.

Mapping quantitative trait loci for nitrogen uptake and utilization efficiency in rice (Oryza sativa L.) at different nitrogen fertilizer levels

G. J. Dai, Cheng, S. H., Hua, Z. T., Zhang, M. L., Jiang, H. B., Feng, Y., Shen, X. H., Su, Y. A., He, N., Ma, Z. B., Ma, X. Q., Hou, S. G., and Wang, Y. R., Mapping quantitative trait loci for nitrogen uptake and utilization efficiency in rice (Oryza sativa L.) at different nitrogen fertilizer levels, vol. 14, pp. 10404-10414, 2015.

Genetic improvement is the fundamental basis for improving nitrogen-use efficiency. A better understanding of genetic factors controlling nitrogen uptake and utilization is required for crop genetic improvement. In this study, we identified the quantitative trait loci (QTLs) associated with traits of nitrogen uptake and utilization by using the single-sequence repeat marker method and a recombinant inbred line (RIL) population derived from a super hybrid Xieyou9308.

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