作物中大多重要的表型性状易受环境影响，是由多基因控制的数量性状，如株高、产量、品质、抗病性等。表型变异遗传机制复杂，基于分子标记构建遗传连锁图谱，以鉴定表型相关数量性状基因座（QTL），是目前寻找表型相关基因的重要研究方法之一。
QTL定位分析视频课程：
数量性状基因座（Quantitative Trait Locus，QTL），是指控制数量性状的基因在基因组中的位置。QTL定位是根据分子标记与目标性状的连锁关系，通过统计方法来定位与目标性状相关染色体区域，这些区域可能包含导致目标性状表型变异的基因。QTL定位是基因精细定位、克隆、表达调控、选择进化研究的基础，对分子标记辅助选择等促进和加速改良作物的发展具有重要意义。
视频课程包含作图群体构建、高通量测序SNP分子标记开发、遗传连锁图谱的构建、QTL定位等多个分析步骤讲解，让您可以独立完成从遗传图构建到QTL定位的全部分析：
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