胡麻（Linum usitatissimum）是我国北方干旱地区主要油料作物。干旱是造成胡麻产量低而不稳的最主要因素，因此，发掘抗旱资源，阐明抗旱机理，改良品种,提高胡麻抗旱性和水分利用效率,实现丰产稳产,对胡麻生产具有重要意义，但是国内外胡麻相关抗旱研究十分缺乏。本项目在前期种质抗旱性鉴定的基础上，组建表现型和基因型丰富的自然群体，筛选与成株期抗旱密切相关的指标；通过构建特定的RIL群体(定亚17号×天亚3号)，利用简化基因组测序（SLAF-seq）技术，开发大量、多态性好的SNP标记，构建胡麻分子遗传连锁图谱，建立有效的连锁分析，定位控制抗旱性的QTL位点或区间，阐明其等位变异在抗旱资源中的数目、来源、分布特点、功能及利用价值。相关研究结果对筛选抗旱种质、发掘抗旱基因并进行分子标记辅助育种具有重要意义。

Abstract: Oil flax is very important oil crops in arid areas of the Northern in China. The most important fact is the drought to result in low and unstable yield of oil flax. To achieve high and stable yield of oil flax, to explore drought resistance resource, illustrate mechanism of drought resistance, improve variety and increase drought resistance and water use efficiency are important significance in oil flax production. There is shortage on research of drought resistance of oil flax include domestic and international. On the basis of drought resistance evaluation of the early stage of the germplasm of the present project to establish nature population of rich phenotype and genotype and screen indicates on drought resistance in oil flax from budding stage to anthesis stage. By building specific population on RIL (Dingya 17 × Tianya 3) and utilizing technical simplication of genomic sequencing to explore SNP of a quantity and good polymorphism. The objective of present project to establish genetic linkage map of oil flax, establish efficient linkage analysis, position control QTL locus or point of drought resistance and clarify amount, origin, characteristic of distribution, function and values in use in resistance resource of allelic variation. There is highly significance on research results to screen drought resistance germplasm and gene and use maker-assisted selection for breeding in oil flax.