2008 Vol. 23, No. 4
Display Method:
2008, 23(4): 403-407.
Abstract:
Allelopathy of Chamaecrista spp on Paspalum notatum was studied.The result indicated that temperature affected the allelopathy.Germination of P.notatum was retarded at 27℃ or 23℃,while promoted at 25℃.At 3 different concentrations of PEG,Chamaecrista spp inhibited the growth of P.notatum.When the PEG concentration was 20%,the inhibition effect was most significant.In general,high pH retarded and low pH promoted the P.notatum growth.
Allelopathy of Chamaecrista spp on Paspalum notatum was studied.The result indicated that temperature affected the allelopathy.Germination of P.notatum was retarded at 27℃ or 23℃,while promoted at 25℃.At 3 different concentrations of PEG,Chamaecrista spp inhibited the growth of P.notatum.When the PEG concentration was 20%,the inhibition effect was most significant.In general,high pH retarded and low pH promoted the P.notatum growth.
2008, 23(4): 408-414.
Abstract:
Toxic genes of the potential pathogenic E.coli collected in different seasons from Min River watersheds in Fuzhou were analyzed using Multiplex-PCR.The results indicated that 840 out of 2015 E.coli isolates were potential pathogens classified as EHEC,EAEC,EPEC and ETEC groups.Ten virulence genes were detected with dominant genes,aidA-1,astA and sepA.The numbers of bacteria,E.coli and E.coli carrying virulence genes,increased in the spring and summer,peaked in the fall,and decreased in the winter.
Toxic genes of the potential pathogenic E.coli collected in different seasons from Min River watersheds in Fuzhou were analyzed using Multiplex-PCR.The results indicated that 840 out of 2015 E.coli isolates were potential pathogens classified as EHEC,EAEC,EPEC and ETEC groups.Ten virulence genes were detected with dominant genes,aidA-1,astA and sepA.The numbers of bacteria,E.coli and E.coli carrying virulence genes,increased in the spring and summer,peaked in the fall,and decreased in the winter.
2008, 23(4): 415-418.
Abstract:
By the material analysis and on-the-spot investigation on the basis of the rural labor transfer of Fujian province,the general situation and the characteristics,the reasons of labor shortage and trends were studied.The corresponding countermeasures were put forward to slow the shortage of labor in coastal areas.
By the material analysis and on-the-spot investigation on the basis of the rural labor transfer of Fujian province,the general situation and the characteristics,the reasons of labor shortage and trends were studied.The corresponding countermeasures were put forward to slow the shortage of labor in coastal areas.
2008, 23(4): 419-423.
Abstract:
This paper discusses the differences between the Sci-Tech service systems in Fujian and Taiwan with respect to the systems' organization,services,managerial styles,promotion methods,etc.The analysis led to recommendations for improving the service system in Fujian,as well as some suggested targets and tasks in the areas of further cooperation between Fujian and Taiwan in the future.
This paper discusses the differences between the Sci-Tech service systems in Fujian and Taiwan with respect to the systems' organization,services,managerial styles,promotion methods,etc.The analysis led to recommendations for improving the service system in Fujian,as well as some suggested targets and tasks in the areas of further cooperation between Fujian and Taiwan in the future.
2008, 23(4): 424-428.
Abstract:
Remarkable results were achieved in Taiwan rich and beautiful village construction.Based on the analysis of the policy content and effects of Taiwan rich and beautiful villages,the policy has some characteristics,such as balance between efficiency and fairness,people-oriented idea,enhancement of cultural values,effectiveness of grass-roots organizations and large-scale agricultural land management.And some enlightenment from the policy were obtained to Fujian new rural construction,including paying attention to the content continuity of the policy with antecedence and foretaste;choosing the mode"interaction from top to bottom" with people-oriented principle;promoting the construction of characteristic industry with sustainable operation;advancing agricultural efficiency with support for agriculture,rural areas and peasants;encouraging the transfer of agricultural land management rights with distinct property right.
Remarkable results were achieved in Taiwan rich and beautiful village construction.Based on the analysis of the policy content and effects of Taiwan rich and beautiful villages,the policy has some characteristics,such as balance between efficiency and fairness,people-oriented idea,enhancement of cultural values,effectiveness of grass-roots organizations and large-scale agricultural land management.And some enlightenment from the policy were obtained to Fujian new rural construction,including paying attention to the content continuity of the policy with antecedence and foretaste;choosing the mode"interaction from top to bottom" with people-oriented principle;promoting the construction of characteristic industry with sustainable operation;advancing agricultural efficiency with support for agriculture,rural areas and peasants;encouraging the transfer of agricultural land management rights with distinct property right.
2008, 23(4): 429-435.
Abstract:
Focusing on the organic tea cultivation,t his paper reviews the relevant literature,introduces the production system,and analyzes its effects on the fertility,microorganisms,enzyme activities and animals of the plantation soil.Recommendations for further research are presented.
Focusing on the organic tea cultivation,t his paper reviews the relevant literature,introduces the production system,and analyzes its effects on the fertility,microorganisms,enzyme activities and animals of the plantation soil.Recommendations for further research are presented.
2008, 23(4): 436-449.
Abstract:
The traditional classification of Bacillus was done mainly based on the phenotypic characteristics.There were 244 species of Bacillus cited in the book of the"Literature Review on Bacillus"by Liu(2006).With the development of new identification methodologies,especially the polyphasic taxonomical method,changes in the taxonomy of Bacillus are emerging.Many species have been re-classified from the genus into new genera.Based on the second edition of "Bergey's Manual of Systematic Bacteriology" published in 2004,this paper discusses the evolutional evidence,as well as the characterictics of the typical species of Bacillus related genera.According to the spore-forming,16S rRNA and other characteristics,22 Bacillus related genera have been separated from Bacillus.Of the 22 genera,15 belong to Bacillaceae and 7 are non-Bacillaceae.There are 13 genera that are only Bacillus in name.
The traditional classification of Bacillus was done mainly based on the phenotypic characteristics.There were 244 species of Bacillus cited in the book of the"Literature Review on Bacillus"by Liu(2006).With the development of new identification methodologies,especially the polyphasic taxonomical method,changes in the taxonomy of Bacillus are emerging.Many species have been re-classified from the genus into new genera.Based on the second edition of "Bergey's Manual of Systematic Bacteriology" published in 2004,this paper discusses the evolutional evidence,as well as the characterictics of the typical species of Bacillus related genera.According to the spore-forming,16S rRNA and other characteristics,22 Bacillus related genera have been separated from Bacillus.Of the 22 genera,15 belong to Bacillaceae and 7 are non-Bacillaceae.There are 13 genera that are only Bacillus in name.
2008, 23(4): 450-456.
Abstract:
This article reviews the current status of microbial agriculture in Fujian,including microbial forage,microbial fertilizer,microbial foods,microbial pesticides,microbial energy,microbial eco-environmental protection preparations,etc.Remaining issues and recommendations for future microbial agriculture development in the province are discussed.
This article reviews the current status of microbial agriculture in Fujian,including microbial forage,microbial fertilizer,microbial foods,microbial pesticides,microbial energy,microbial eco-environmental protection preparations,etc.Remaining issues and recommendations for future microbial agriculture development in the province are discussed.
2008, 23(4): 457-461.
Abstract:
Loquat(Eriobotrya japonica Lindl.) originated from China is a well-known,characteristic tree species.The rich resource of loquat germplasm in the nation provides an excellent foundation for genetic and production improvements.This review covers recent advancement in the biotechnology applications,including cell engineering and molecular markers,for loquat germplasm studies.Current issues and direction for future research were also discussed.
Loquat(Eriobotrya japonica Lindl.) originated from China is a well-known,characteristic tree species.The rich resource of loquat germplasm in the nation provides an excellent foundation for genetic and production improvements.This review covers recent advancement in the biotechnology applications,including cell engineering and molecular markers,for loquat germplasm studies.Current issues and direction for future research were also discussed.
2008, 23(4): 462-465.
Abstract:
By means of UV radiation mutagenesis on Hypsizigus marmoreus,the mutation breeding strain No.6 was resulted after repeated screenings.Mycelia of the fermentation strain had a dry weight of 22.700 mg•mL-1.It contained 4.063 4 mg•mL-1 intracellular polysaccharides,1.7220 mg•mL-1 exopolysaccharide and 5.783 4 mg•mL-1 total sugars.The yield was higher than that from other strains.The optimized culture.composition was found to consist of 2.0% soluble starch,3.0% maltose,0.6% beef extract and 0.2% peptone.Cultivated with the optimized formulation,No.6 H.marmoreus mycelium had a dry weight of 20.2580 mg•mL-1.Its intracellular polysaccharide content increased to 4.2587 mg•mL-1 and exopolysaccharide to 2.2342 mg•mL-1.
By means of UV radiation mutagenesis on Hypsizigus marmoreus,the mutation breeding strain No.6 was resulted after repeated screenings.Mycelia of the fermentation strain had a dry weight of 22.700 mg•mL-1.It contained 4.063 4 mg•mL-1 intracellular polysaccharides,1.7220 mg•mL-1 exopolysaccharide and 5.783 4 mg•mL-1 total sugars.The yield was higher than that from other strains.The optimized culture.composition was found to consist of 2.0% soluble starch,3.0% maltose,0.6% beef extract and 0.2% peptone.Cultivated with the optimized formulation,No.6 H.marmoreus mycelium had a dry weight of 20.2580 mg•mL-1.Its intracellular polysaccharide content increased to 4.2587 mg•mL-1 and exopolysaccharide to 2.2342 mg•mL-1.
2008, 23(4): 466-468.
Abstract:
The effects of N/P/K applications on floral budding of Phalaenopsis at high altitude or with air-conditioning were studied.Results showed that the optimum fertilizer ratio was N:P2O5:K2O=10:40:20,10:30:20 or 10:30:40.At elevations above 800 meters,the essential budding requirements included(a) healthy plantlet with 4～5 leaves,(b) more than 20cm between two leaves,(c) thick and strong roots,and(d) no pest infestation and disease-free.On indoor air-conditioned cultivation,the temperature was best maintained at 25～28 ℃ in the daytime and 15～18 ℃ at night,illumination intensity at 30000～35000 lx,and 18 hours low temperature treatment per day.
The effects of N/P/K applications on floral budding of Phalaenopsis at high altitude or with air-conditioning were studied.Results showed that the optimum fertilizer ratio was N:P2O5:K2O=10:40:20,10:30:20 or 10:30:40.At elevations above 800 meters,the essential budding requirements included(a) healthy plantlet with 4～5 leaves,(b) more than 20cm between two leaves,(c) thick and strong roots,and(d) no pest infestation and disease-free.On indoor air-conditioned cultivation,the temperature was best maintained at 25～28 ℃ in the daytime and 15～18 ℃ at night,illumination intensity at 30000～35000 lx,and 18 hours low temperature treatment per day.
