单片段代换系是进行基因分析特别是QTL分析的理想材料。
The single segment substitution lines(SSSLs) were perfect materials for analysis of gene especially for QTL.
异代换系均生长旺盛，结实正常，说明异染色体能较好地补偿所缺失的小麦染色体。
Alien substitution lines are vigorous and fertile, indicating that the alien chromo-somes are able to compensate for the missing chromosomes.
对小麦-华山新麦草附加系H20和代换系H1的抗病性及分子细胞遗传学进行了研究。
The molecular cytogenetics and disease resistance of addition line H20 and substitution line H1 from wheat-P.
用于作物数量性状基因座（QTL）定位研究的次级作图群体有近等基因系、导入系、染色体片段代换系等。
The secondary mapping populations (SMPs), which were used to map quantitative trait loci (QTLs), include near-isogenic lines, introgression lines, chromosome segment substitution lines et al.
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。
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。
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.
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