This study focuses on the explanation of ultimate seedling growth state including the total biomass measured in dry weight and the ratio of underground to above-ground measured in dry weight,which is based on the statistical modeling analysis of a series of seedling physiological indexes,through the seedling experiment in greenhouse.

Foliar carbon isotope composition(δ 13C), total biomass and long_term water use efficiency(WUE L) of 12 Populus deltoides clones were studied under water stress in the greenhouse.

1997 to March 2000 in the East China Sea (23°30′～33°00′N,118°30′～128°00′E) the research was focused on analyzing and approached dynamic of quantitative temporal and spatial distribution of total biomass of zooplankton and the relationship of fishing grounds of anchovy (Engraulis japoicus).

Study on Relevance between the Yield and Morphology of Cultivated Cordyceps;

The bulb of Lycoris radiata was chosen as extraction material,the content of total alkaloids was used as index and water,ethanol and n-hexane used as solvents.

The biomass and the content of total alkaloids of protocorms were measured.

OBJECTIVE To study the effect of a fungal elicitor on the growth and the total alkaloid content of Dendrobium candidum protocorms cultured on the solid medium.