Molecular analysis of an interspecific hybrid ornamental eucalypt for parental identification

The parentage of ‘Urrbrae Gem’, an ornamental hybrid Eucalyptus, was investigated using RAPD-PCR. The female parent was known to be E. erythronema var. erythronema but previous opinion, based on adult morphological characters, placed the male parent as either E. stricklandii or E. gomphocephala. Samples of DNA, extracted from leaves of different individuals within each species, were amplified with six different 10-mer primers to produce RAPD fingerprints. These were used to generate a UPGMA dendrogram based on genetic similarities, and an ordination plot, derived by multi-dimensional scaling (MDS), and minimum spanning tree (MST) to show the relative dissimilarities between the individuals tested. The UPGMA dendrogram divided the samples into three clusters, with the hybrid slightly closer to E. stricklandii than E. gomphocephala. The MDS ordination and MST placed the hybrid between E. erythronema var. erythronema and E. stricklandii, supporting E. stricklandii as the male parent. This revised version was published online in August 2006 with corrections to the Cover Date.     

长白山区中华蜜蜂与西方蜜蜂寄生瓦螨比较分析

采用形态测定和RAPD-PCR相结合的方法对寄生于长白山区的中华蜜蜂和西方蜜蜂的瓦螨进行比较分析.结果表明,中、西蜂寄生瓦螨无论在形态水平还是分子水平上都是具有差别的.在选定的8个形态指标中,寄生于中华蜜蜂的瓦螨个体的指标有7个大于寄生于西蜂的瓦螨,其中有6个指标的均数差异达到显著(0.01相似文献