Institut für Pflanzenbau und Pflanzenzüchtung, Technische Universität München, D-8050, Freising-Weihenstephan, Germany.
Theor Appl Genet. 1987 Jan;73(3):337-42. doi: 10.1007/BF00262498.
C-banding patterns and nucleolar activity were analyzed in Dasypyrum villosum, its added chromosomes to hexaploid wheat and the hexaploid amphiploid Triticum dicoccum-D. villosum. Two different populations of the allogamous species D. villosum (2n= 14, VV) from Greece and Italy were analyzed showing a similar polymorphism for C-banding pattern. Six of the seven addition lines were identified by their characteristic C-banding pattern. No polymorphism between both members of each added alien chromosome was found. Furthermore, nucleolar activity and competition were studied by using silver staining procedure. In D. villosum only one chromosome pair, A, was found to be responsible for organizing nucleoli. The results obtained in the amphiploid and in the addition lines demonstrate that nucleolar activity is restricted to SAT-chromosomes 1B and 6B of wheat, while those of D. villosum remain inactive.
在长穗偃麦草、其添加到六倍体小麦的染色体和六倍体双二倍体 Triticum dicoccum-D. villosum 中分析了 C-带模式和核仁活性。分析了来自希腊和意大利的两个不同的异源种长穗偃麦草（2n=14，VV）种群，显示出 C-带模式的相似多态性。通过其特征性的 C-带模式鉴定了 7 个添加系中的 6 个。在每个添加的外源染色体的两个成员之间没有发现多态性。此外，还通过银染程序研究了核仁活性和竞争。在长穗偃麦草中，仅发现一对染色体 A 负责组织核仁。在双二倍体和添加系中获得的结果表明，核仁活性仅限于小麦的 SAT 染色体 1B 和 6B，而长穗偃麦草的核仁仍然不活跃。
