Abstract: To cultivate excellent new cultivars，we introduced 17 Hippeastrum cultivars from
Netherlands in this study. We designed 44 hybrid and 8 self-fertilize combinations，and calculated the seed
setting rate，emergence rate，growth speed and the number of cabbage. The results showed that in the 44
hybrid combinations，38 ones get hybrid offspring（seed setting rate 25.0%–100%）and obtain progeny
seedlings（seedling emergence 35.7%–89.1%）；In the 8 self-fertilize combinations，6 ones get fruits（seed
setting rate 62%–100%），and five of them harvest future generations（seedling emergence 39%–96%）.
The concrete manifestation of the 17 cultivars are as following：（1）In terms of hybrid setting rate，‘Red
Lion’，‘Carmen’，and‘Souvereign’had better performance. Except some combinations that didn’t seed，
the average seed rating were more than 60% either as male or female parents.（2）In terms of seed number per fruit，‘Souvereign’，‘Olaf’，and‘Red Lion’had better performance. The average seed numbers per
fruit of the three species as female parent were 44.6，43.2 and 44.0，respectively.（3）In terms of cormel
growth，the combinations of‘Red Lion’בMout Blanc’，‘Olaf’בMout Blanc’，and‘Souvereign’×
‘Mout Blanc’had faster growth，the perimeters of 2-years-bulb were 23.1 cm，22.5 cm，and 20.5 cm，
respectively.（4）In terms of cormel propagation，2-years-bulb of 19 combinations obtained gonidial balls，
in which the‘Donau’בAmigo’combination had the most cormels，averaged at 4.2 per bulb. With above
combinations this study obtained 16 thousands cross hybrid seedlings，from which 5 new cultivars were
selected by identifying the blossom ones. The above results can serve as the reference for selecting
breeding parents of Hippeastrum；Meanwhile，according to the performance of different combination and
the results of offspring identification，this study analyzed the factors that affected the hybridization
efficiency and offspring selection and brought up corresponding strategies.

Key words: Hippeastrum vittatum, crossbreeding, germplasm enhancement