The Cymbidium Hybridum DUS Testing And Correlation Analysis Of Traits

In this paper, through28common cultivated species of84traits of Cymbidium hybridum to DUStesting on the yunnan yuxi YiJin farm, to genetic diversity analysis and evaluation on the traits, at thesame time, conform to the normal distribution of quantitative characters to probability grading,screening mutation amplitude and classification of most traits, expectations for the fourth varietieswhich provides the basis for the collection of the preservation and reasonable utilization of resources,for the fourth of varieties of species classification and identification, protection and breeding workprovide certain reference.The main results are as follows:1. The probability of quantitative character classification Of24quantitative character distribution,average and coefficient of variation of statistical calculation, on this basis, the distribution frequencygraph drawing, combined with nonparametric test character of distribution type. The results show thatthe length of blade and scapes showed, lip width and lip length-width ratio in line with normaldistribution; While the other20characters to present the skewness distribution center, the lip colordistribution of the species is a serious skewness distribution. To conform to normal distributionprobability classification, four quantitative traits of cent point value is determined.2. Quality characteristics of distribution21computing performance style quality traits in distributionproportion of varieties in the same group, the results showed that: Sepals spots, lip stain, lip transitionbetween different colors, etc.16flowers of quality traits of performance style in variety unevendistribution within the group, close to or more than70%of the performance style focused on a certainclassification interval.3. Stability and variation Calculation of coefficient of variation, the results show that the larger thefourth phenotypic traits have higher diversity, relative to the leaf flower character traits variationcoefficient is higher. R cluster analysis part has a certain degree of coordination between the variation,but most of these collaborative higher traits for different parts of the same organ. The Q cluster analysisfound that most big fourth varieties between independent each other.4. Scapes showed, the relevance of pseudobulb and floral character Through correlation analysisshowed that false bulb size and scapes showed parts properties dependence is strong; Hybrid orchid pseudobulb in yellow color is relatively weak; Hybrid orchid pseudobulb green and pink color is a bitdeep; Hybrid red series of pseudobulb color most.5. Between the annual variation analysis The results show that the quantitative traits by year,expression level, the influence of environmental factors such as differences in larger; Quality traits andquality traits between annual is relatively stable, but most color traits have certain changes.