The Status Quo and Countermeasures of Planting and Industrial Development of Poria cocos in Luotian County

We conduct a field survey of the status quo of planting and industrial development of Poria cocos in Luotian County.The results show that at present,Luotian County develops a set of standardized Poria cocos cultivation technique,and some areas use the guideline of "four changes" to plants Poria cocos.The main problems faced by planting of Poria cocos currently are as follows:insufficient popularization of standardized Poria cocos cultivation technique;low processing level of Poria cocos;chaotic source of germplasm;lack of science and technology input;single industrial development pattern;shortage of well-known brands of products.In accordance with the above findings,we put forward the following recommendations:extensively promoting the guideline of " four changes";focusing on development and utilization of Poria cocos byproducts;implement listing-for-sales to clarify the source of Poria cocos strain;tightening the bonds with research institutes and large enterprises to promote science and technology input into Poria cocos;encouraging the coexistence of diverse industrial development pattern.

Isolation and Identification of Pathogenic Fungi Causing Decayin Luotian Chestnut during Late Storage Period and Research on Pathogenicity

In order to explore moldy mechanism of chestnut from Luotian County in storage process,the strains of pathogenic fungi were isolated from chestnuts after storage at room temperature for 70d.Six genera of fungi were found in chestnut through experimental identification,which were Ozoniumsp.,Fusarium sp.,Aspergillus sp.,Penicilliumsp.,Rhiopus sp.and Stachybotrys sp.,respectively.The re-inoculation tests had been conducted on pathogenic fungi whose isolating rate was greater than 10%.The result showed that the rest genera of fungi generally had no pathogenicity except Penicilliumsp.could infect non-injured chestnut with a lower moldy rate and lighter symptoms;but the moldy rate of strains was above 60% in injured inoculation and they showed heavy symptoms,among which the moldy rate of Ozoniumsp.and Aspergillus sp.were higher than 80%.The experimental results showed that injured chestnut were more likely to decay.Ozoniumsp.and Aspergillus sp.were important pathogenic fungi causing decay during storage process of chestnut.