1. Studies on the endangered mechanism and conservation strategy of rare plants

(1). High genetic diversity vs. low genetic differentiation in Nouelia insignis (Asteraceae), a narrowly distributed and endemic species in China, revealed by ISSR fingerprinting.

(2). Genetic variation and phylogeography of Psammosilene tunicoides (Caryophyllaceae), a narrowly distributed and endemic species in south-western China.

(3). Patterns of chloroplast DNA variation in Cycas debaoensis (Cycadaceae): conservation implications.

2. Studies on the phylogenetics

(1). Phylogenetic study on Chinese Apiaceae subfamily Apioideae.

(2). Systematic positions of Lamiophlomis and Paraphlomis (Lamiaceae) based on nuclear and chloroplast sequences.

(3). Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae).

3. Varietybreeding from Michelia  plants