亚麻外源DNA导入后代的遗传与变异研究

亚麻是我国重要的天然纺织工业原料之一，亚麻加工企业是黑龙江省的支柱型产业和重要的出口创汇企业。近年来随着市场经济的发展， 生产上对亚麻品种提出了更高的要求，生产上急需质佳、丰产、早熟、抗倒、出麻率高的品种。为了尽快地解决这一问题，从１９９３ 年开始，对亚麻外源 Ｄ Ｎ Ａ 导入技术进行了较深入的研究。通过形态学观察，遗传学分析， 发现亚麻外源 Ｄ Ｎ Ａ 导入后代在株高、工艺长度、麻率、抗倒伏性、花色、种皮色等性状有变异，一般 Ｄ３ － Ｄ４ 代可稳定遗传，利用该技术进行育种，可缩短育种年限，加速育种进程。该项技术的研究丰富了亚麻育种的理论与实践的内函，对亚麻事业的发展具有重要的指导意义。

Study on Herdity and Variation of Progenies Derived by Introducing Exogenous DNA in Flax

Flax is an important natural material linen spinning industry in China.Recently,with the development of market economy,farmers and flax factories need new varieties that have short vegetation period,resistance to lodging,high fiber content.In order to resolve these problems quickly,we have studied on introducing exogenous DNA into flax since 1993.Exogenous DNA introducing could effectively transfer the character of plant high,stem length,fiber content,resistance to lodging,petal color and seed coat color.The character can stable heredity at generation D 3-D 4. This method can reduce years of the breeding, so this experiment is very important to the theory and practice of flax breeding.