Evaluation of Brassica crops and wild allies for the breeding by wide cross

本研究针对芸苔属作物转基因品系的开发（合成双二倍体系、外源基因渐渗系、异质系、单体外源染色体附加系、单体外源染色体置换系）通过与野生近缘种远缘杂交，结果表明：1）萝卜与四种芸苔属植物间选育出双二倍体新品系;以萝卜和大白菜为材料，3）在萝卜和大白菜中培育了异源染色体附加系，并对附加系中的染色体进行了鉴定和评价。部分研究结果已在相关期刊上发表，其余研究课题正在准备发表。5）新品系的种子可以在限定的数量内提供，以备新研究之需。

In this study for the development of genetically modified lines of Brassica crops (Synthetic amphidiploid line, Alien gene (s) introgression line, Alloplasmic line, Monosomic alien chromosome addition line, Monosomic alien chromosome substitution line) by the wide cross with wild allies, following resuls were obtained.1)Amphidiploid lines were newly bred between radish and four Brassica species.2)Alloplasmic lines were bred in radish and Chinese cabbage, some of them exhibiting male steririty effective for hybrid seed production.3)Alien chromosome addition lines were developed in radish and Chinese cabbage in which some added choromosomes were identified and evaluated.4)Some of the resuls were reported in the corresponding journals and the other subject matters are prepared for publication.5)Seeds of newly developed lines may be provided in request for the novel investigation within the limited amount.