Status of studies of primary trisomics and other aneuploids in barley
Status of studies of primary trisomics and other aneuploids in barley
复制标题
大麦初级三体和其他非整倍体的研究现状
作者：
T. Tsuchiya
本文综述了大麦三体细胞学和遗传学研究的最新进展。简要概述了新三体系列在栽培品种中的用途。特别提到的三体系列在H. Trisomics是一种新的基因组学方法，它不仅可以验证以往连锁分析的一些可疑结果，而且可以将新的突变基因定位到特定的染色体上。本文报道了一个新的八价体大麦类型的建立，这与三体在二倍体植物进化研究中的应用有关，并对今后的工作提出了建议，如：建立一系列端部着丝粒三体，以便通过在每个染色体臂上指定更多的基因和定位着丝粒位置来建立更精确的连锁图。对归因于特定个体染色体的酶活性或其他化学性质的分析可能有助于啤酒大麦品种的改良。
Recent achievements in the cytology and genetics of trisomics of barley are reviewed. The usefulness of new trisomic series in cultivated varieties is briefly outlined. Special reference is given to the comparison of trisomic series inH. spontaneum and in cultivated varieties including the spring type, two-rowed cultivar, Shin Ebisu 16, the only one in which a complete set was established.Trisomics have been shown to be useful for verifying some doubtful results of previous linkage analysis, and to assign new mutant genes to particular chromosomes. The establishment of a new barley type with eight bivalents is reported in relation to the usefulness of trisomics in the experimental study of evolution in diploid plants.Problems for future work were considered, such as: The establishment of a series of telocentric trisomics with the purpose of establishing more accurate linkage maps by designating more genes on each chromosome arm and by locating centromere positions on the maps. The analysis of enzymatic activity or other chemical proporties ascribable to specific individual chromosomes may be useful in the improvement of malting barley varieties.