Studies On Cross Breeding Of Cyclamen Persicum Mill

Cyclamen is very valuable in ornament, it mainly for potted flower,but some areas produced for cut flower.New variety breeding of cyclamen has important significance. Character analysis of parents,pollen viability and Germination Rate,hybridization of cyclamen,character segregation of first filial generation are studied in this paper. To provide reference for cross breeding.Phenotypic,genetic and environmental correlation analysis to12 quantity characters of 14 kind of cyclamen. As a whole, Correlation analysis of the majority character have the same positive and negative tendencies, Especially phenotypic correlation and genetic correlation have the same tendencies. Genetic correlation coefficient has maximum absolute value, phenotypic correlation take second place, environmental correlation coefficient was minimum. This indicated that the character related mainly decided by the genetic character. According to phenotype related for selection in breeding in the breeding descendant,also elect the genetype to need.Pollen viability and germination percentage of cyclamen 10 variety are determinated.The pollen viability variety 28 was significantly higher than other varieties and can be used as a pollinated variety. There was no obvious difference of variety 36 and variety 28,so variety 36 can be used as a pollinated variety.Other variety can not be used as a pollinated variety because pollen viability is too low. Pollen germination percentages of the variety 4,variety 28,variety 32 in the 25℃were the highest. Pollen germination percentages of the variety 36 in the 27℃were the highest.,is 64.97%.Through to hybridizes a generation of partial character hereditary change situation analysis to know: The red flower petalof cyclamen has the leaning maternal heredity tendency;First filial generation of plant height and the flower-strewn path assumes hastens the small weaken the tendency. Widespread of hybrid descent's variety, plant height, the floral axis high character separation is beneficial to choice the new variety.According to the comprehensive evaluation objectively of cyclamen fine varieties on the basic principle of fuzzy comprehensive evaluation, six superior individuals were selected.Cyclamen of F1 hybrids were irradiated by 60Co gammarays,There were greater effect of emerging time,uniformity of the seedling,germination rate,seedling height,blade length and leaf width.After the cyclamen of F1 hybrids were irradiated by 60Co gammarays, cyclamen changes is small, the flowering season retards, and the leaf blade size, the seedling blossom the character and so on to have the large scale variation highly. Enlarges along with the radiation dose, the variation scope is also bigger, the descendant displays the character separation to be also more serious.Under about 16,24,32 hour's treatment in water of cyclamen of F1 hybrids,The influence Is different to the different variety's germination percentage, The overall tendency is along with the soaking seeds time expand, seed's germination percentage reduces, germinates is later.