Root Induced in Callus Culture of Hemerocallis hybrida;

Study on tissue culture and propagation technique of Hemerocallis hybrida;

Studies on the Rapid Propagation of "Hongbaoshi" Hemerocallis hybrida by Tissue Culture

Study on Drought Resistance of Two Plants of Urban Green Land:Hemerocallis fulva and Zoysia japonica;

Study on Sterile Culture and Rapid Breeding Technique of Hemerocallis fulva Seed;

Effects of salt stress on osmotic adjustment substance in Hemerocallis fulva;

Establishment of the Optimum Reaction System for ISSR-PCR of Hemerocallis fulva L.;

Experiment of Hemerocallis fulva L. Planting on Sand-hill Land in North Henan Province;

The pollen development of Hemerocallis fulva L has been observed by traditional methods.

Studies on Propagation Technology of Hemerocallis Horticulture Variety;

Research on the Introduction of Hemerocallis dumortieri Variety and its Cultivation Technique;

Identification and Classification of Hemerocallis Resources with AFLP Molecular MarkersⅠ.Making of DNA Template;

With day lily pollen as material,by adopting acetone powder method,QAE-Sephadex A_(50) ion exchange chromatography and FPLC technology, we purified milligram day lily pollen tubulin and studied their biochemical characters.