摘要： 由宝丰7228小麦成熟胚培养诱导的体细胞无性系株高性状变异结果表明,无性系SC₂代株高性状的变异频率为37.2%,平均株高较对照宝丰7228矮化了5.1厘米.对SC₂代株高的选择,在SC₃代的表现是有效的.无性系SC₃代株高性状已有5.1%的株系得到稳定.无性系株高性状的变异与愈伤组织和再生单株有关,而与再生植株中的单穗无关.对无性系变异的应用进行了讨论.

关键词: 体细胞无性系变异, 成熟胚, 株高, 小麦

Abstract: The plant height character variation of somaclonal line induced from the cultured mature embryo in wheat variety Baofeng 7228 (Triticum aestivum L.) was studied in this paper. The result indicated that the variation frequency of plant height in SC2 was 37.2%, and the average plant height was 5.1cm shorter than that of Baofeng 7228. It is enough to prove that the intention of selection in SC3 for getting shorter plant is effectively showed in SC3. The plant height character has been stabilized in 5.1% lines. It is seemed that the variation in height of somaclonal plant is related to the callus and the regenerative plant rather than to its ear. The application of the somaclonal line variation has been discussed.

Key words: Variation of somaclonal line, Mature embryo, Plant neight, Wheat (Triticum aestivum L. )