Genetic Variation and Correlation Analysis of Quantitative Traits of Dahlia Flowers

The 12 quantitative traits of 24 cultivars of Dahlia were investigated,the variation range,repeatability and genetic were correlation analyzed.The results showed that the characters of intraspecific were stable,in addition to outside florescence was significantly impacted by environment,but there was a significant variation in interspecific,rich in genetic diversity of population.Flower diameter repeatability was larger,other traits were impacted by environment in different degrees,single early flowering stage,single-flowering stage and whole plant flowering stage were most affected by environment.Nevertheless,they had genetic stability within clone.High correlation between the flowering stage,while it was correlated with the number of flower petals and the ratio of petal length and width,but has low relevance with flower-type and patal-type,flower diameter was basically independent inheritance.