Because of lower fertile fruit percentage of seedless Poonen Citrus,experiment on fruit retention demon-strated that 40×10-6 of gibberellin was the best one.

Chemical composition analysis of Ponkan seed oil and its effects on blood lipid in experimental hyperlipidemic rats

Seedless Ponkan(Citrus reticulate Blanco) is a kind of subtropics everygreen fruit tree, which has a thick sweet taste, crisp and tender pulp texture, beautiful appearance, and seedless.

In vitro system for the regeneration of mature internodal stem segments of Ponkan (Citrus reticulata Blanco);

Study on the selection of new variety Heping ponkan;

Lipeng No. 2, a new Ponkan mandarin cultivar;

The climatic factors influencing the occurrence of citrus yellow shoot trees are studied by using the climatic data of the Congjang Meteorological Bureau(the day-to-day temperature,precipitation,evaporation and number of consecutive rainy days) from May to October,1981 to 2005.