关键词: 大肠杆菌, 大肠杆菌, ESBLs, 耐药性, 基因型

Abstract: Study the phenotypic characters of Cymbidium kanran germplasms, 35 portions of Cymbidium kanran germplasms were taken as the research materials and 38 phenotypic characters were selected for diversity analysis. Variation analysis and correlation analysis were conducted to quantitative characters, probability distribution analysis to qualitative characters, and diversity analysis was conducted with Simpson’s index and Shannon-Wiener index being the evaluation indicators. The result showed all variation coefficients of the quantitative characters exceed 10% with significant variation, and there was remarkable positive correlation among the quantitative characters. Quantitative characters of petal spots, labial palp stripes and other parts were relatively stable with higher consistency. Simpson’s index and Shannon-Wiener index of petal longitudinal section shape, buccae longitudinal section shape and most of the other quantitative characters were relatively high, with relatively high diversity degree and rich diversity. In conclusion, all of those indicate the phenotypic characters of cymbidium kanran germplasms were with notable variation and rich diversity.