摘要： 以龙马1号、临85-1、832556×F63Fo、8361-×PH82-2-2Fo为材料,研究了小麦离体培养和辐射诱变相结合对其后代抗白粉病变异的影响.结果表明,辐射诱变和离体培养结合,能产生抗白粉病植株,杂合材料比稳定品种的诱变频率高,可选择的有益变异也高,尤其832556×F63Fo材料,rSC1代选出7株抗白粉病,其中2株达高抗,抗白粉病单株的叶片变短变厚,叶色变深,并对株高有降低作用;而其千粒重大都下降,穗粒数的变化有增加的,也有减少的.
关键词:
小麦,
抗白粉病,
离体培养,
辐射诱变
Abstract: Young embryos of w heat w ere irradiated and cultured in vi tro for select ion of resistant mutant s to pow dery mildew . Several variet ies including Longma 1, Lin 85-14, 832556 @ F63 Fo, 8361-4 @ PH82-2-2 Fo w ere tested from 1998 to 2000. T he results indicated that pow dery mildew resistant plant could be produced by cell culture and mutat ion. Comparing to the common v ariety, hybrid showed hig her induction rate and more useful variations. Seven pow dery mildew resistant plants, of which tw o plants show hig h resistance, w ere obtained from the rSC1 generat ion of the variety 832556 @ F63. The characterist ics of the pow dery resistant plants include shorter and thicker leaves, darker leaf color, reduced plant height , decrease in 1000-kernel weig ht , and irreg ular changes of kernel numbers in spokes.
Key words:
Wheat,
Resistance to pow dery mildew,
Cell culture,
Mutat ion
中图分类号:
李中存. 辐射小麦幼胚诱发和筛选白粉病抗性突变体的研究[J]. 华北农学报, 2002, 17(2): 58-61. doi: 10.3321/j.issn:1000-7091.2002.02.013.
LI Zhongcun. Induction and Identification of Resistant Mutants to Powdery Mildew Through Irradiating Young Embryo in Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(2): 58-61. doi: 10.3321/j.issn:1000-7091.2002.02.013.