【摘要】 甘蓝型油菜LSW2018苗期具有典型的“矮缩”性状，植株矮秆，茎秆粗壮，抗倒性极强，是理想的矮秆种质资源，适宜机械化作业，具有重要的利用价值。为挖掘LSW2018的育种优势，研究其“矮缩”性状的遗传规律，选用119份正常高秆甘蓝型油菜品种（系）、12份白菜型油菜品种（系）、6份芥菜型油菜品种（系）与LSW2018（P1）构建正反交组合，对其F₁、F₂、F₃及aBC₁、bBC₁等世代群体进行分析，遗传研究表明，矮缩性状由1对显性基因控制，株高具有主基因+多基因遗传效应，不存在细胞质效应。更多还原

【Abstract】 LSW2018, a Brassica napus germplasm, has typical "dwarf" character at seedling stage, and the plant is short with thick stem and strong lodging resistance. As an ideal dwarf germplasm resource, LSW2018 is especially suitable for mechanized operation and has important utilization value. In order to explore the breeding advantages, and study the inheritance of dwarf character of LSW2018, 119 normal high-stalk Brassica napus cultivars（lines）, 12 Brassica rapa cultivars（lines） and 6 Brassica juncea varieties（lines） were selected to construct cross combinations with LSW2018（P1）, and the populations of F₁, F₂, F₃, aBC₁ and bBC₁ were analyzed. The results indicated that dwarf trait was controlled by a pair of dominant genes, plant height has major gene-polygenic genetic effect,and there is no cytoplasmic effect.更多还原