The single segment substitution lines(SSSLs) were perfect materials for analysis of gene especially for QTL.
单片段代换系是进行基因分析特别是QTL分析的理想材料。
Single segment substitution lines (SSSL) containing only one segment of donor chromosome introgressed into a recipient genetic background permits QTLs to be mapped with greater precision.
目的单片段代换系（SSSL）是通过高代回交和分子标记辅助选择构建的，只含有来自供体亲本的一个染色体片段，遗传背景与受体亲本相同的品系。
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