Abstract: In order to investigate the genetic variation of important characters of lily hybrids, a total of 210 F₁ generation populations were obtained from the crosses between Lilium Asiatic hybrids(Nello,Benfica) and L. leichtlinii var. maximowiczii. Thirteen phenotypic traits of the parents and F₁ hybrids,including plant height,leaf traits and floral characters and so on,were statistically analyzed. The results indicated that the plant height,leaf length,inner and outer tepal length showed a trend of decrease. The mean number of flowers,flower diameter,leaf width,number of leaves,inner and outer tepal width were 116.2%,118.6%,115.2%,106.4%,113.9% and 122.3%of their parents,respectively,showing certain heterosis,but the heterosis was different between the two cross combinations. The coefficient of variation of plant height,leaf length,leaf width,number of leaves and flowers reached above 15%,indicating they had plentiful phenotypic variation. Flower color in F₁ hybrids was obviously centralized,presenting different degrees of orange with several yellow individuals.Spots were separated in hybrids of Nello L.leichtlinii var. maximowiczii and Benfica L. leichtlinii var. maximowiczii by ratio of 47:78 and 24:61,respectively,and the number of spots were different among spotted plants. Most flower form of F₁ hybrids were bowl shape,exhibiting matroclinous inheritance.There was significant correlation among the quantitative characters.The morphological characters were widely separated in F₁ hybrids of Nello L. leichtlinii var. maximowiczii and Benfica L. leichtlinii var. maximowiczii,and there were large super-parent and low-parent F₁ hybrids,which might be favorable to the selection of superior individuals with larger diameter,more flowers and dwarf type.

Key words: Lily, Hybridization, Characters, Genetic analysis

CLC Number: 

• S682.2