In order to find the culture environment and culture conditions for promoting Beauveria bassiana sporulation, and provide the scientific evidences for fermented in submerged culture, we made researches on cultivation in submerged culture, and indoor the virulence test of submerged conidia to Dendrolimus Punctatus, and making a comparison with aerial conidia.

Pycnoconidia solution of 30 000-40 000 per mL was used as identification method for resistance to target leaf spot of cucumber.

Studies on Factors Affect Germination of Conidium of Corynespora assiicola;

Study the Biological Properties and Bioefficacy of Chlamydospore and Conidium from Trichoderma Viride;

For conidium germination, optimal temperature range was from 20℃ to 30℃, the optimal initial pH 4～7, and the humidity range from 80% to 100%, and conidia could germinate whether it was light or dark.

Methods:In the Cordyceps militaris strains growth test in culture medium,the growth rate of hyphae and the amount of conidiophores were studied.

[Result] Conidiophore,mycelium,fermentation metabolite of P.

Studies on the Influence of Some Chemicals on the Vitality of Resting Spores of Plasmodiophora brassica as well as Conidia of Alternaria brassicicola;

Histochemical observation on the resistant and susceptible varieties to Ustilaginoidea virens (Cooke) Tak and the way of infection of conidia;

Study on producing of β-conidia of Phomopsis in pure culture;