Compiled
By: Kee-Wook SOHN
Expert in Sericulture Germplasm Management
From Papers contributed to Expert Consultation on Promotion
of Global Exchange of Sericulture Germplasm, Bangkok,
Thailand
September 2002
Food and Agriculture Organization of the United Nations,
Rome
April, 2003
1. CONSERVATION STATUS OF SILKWORM GERMPLASM RESOURCES IN CHINA
1. Introduction
2. Function of Silkworm Germplasm Resources2.1 Silkworm germplasm resource is the necessary material base for the sustainable development of sericulture
2.2 Sericulture industry is depending on the rich silkworm gene pool
2.3 To investigate silkworm gene bank will exploit the valuable gene mutations of silkworm
2.4 Silkworm germplasm resource is the important material not only for basic research of sericultural science, but also for genetics and molecular biology research3. Methodology used in maintenance and research of silkworm germplasm resource
3.1 Collection, assortment and identification
3.2 Records of biological features and characteristics
3.3 Investigation of economic characteristics
3.4 Identification of resistant ability
3.5 Genetic analysis3.5.1 Long term cold storage techniques for diapaused polyvoltine germplasm strains
3.5.2 Maintenance of lethal genes4. Present state and achievement of research and management on silkworm germplasm maintenance
4.1 Present state
4.2 Research and achievement4.2.1 Achievement in Sericulture Research Institute of China Agricultural Science Academy
4.2.2 Research in South-West University
4.2.3 Other institutes involved with silkworm germplasm resources in China
4.2.4 Some basal varieties with special characteristics were bred
4.2.5 Many economic and resistant characters were investigated and analyzed in inheritance, some varieties with special characters were identified
4.2.6 More new mutations are found recently
4.2.7 Commercial silkworm variety had been greatly advanced both in quantity, quality and healthiness
4.2.8 Molecular biological studies on the silkworm germplasm resources5.1 Future task for silkworm germplasm resource maintenance
5.2 Specialty of silkworm germplasm resource maintenance6. Silkworm germplasm database
6.1 Management and utilization of database
6.2 Samples of germplasm catalogue
6.3 Promotion of global sharing of silkworm germplasm information6.3.1 Sharing of germplasm information
6.3.2 Sharing silkworm genetic resources
6.3.3 Opinions and proposals
2. CONSERVATION STATUS OF SILKWORM GENETIC RESOURCES IN INDIA
1.1 Importance of sericulture in developing countries:
1.2 Multipurpose use of sericulture
1.3 Future demand for silk
1.4 Present status of silkworm germplasm at global level
1.5 Historical review of silkworm germplasm in India
1.6 Importance of conservation of silkworm genetic resources2. Conservation of Silkworm Genetic Resources in India
2.1 Development of silkworm germplasm resources
2.2 Management and utilization of silkworm genetic resources
2.3 Quarantine measures adopted in collection and supply of silkworm germplasm3. Silkworm germplasm database
3.1 Management and utilization of database
3.2 Samples of germplasm directory/catalogue
3.3 Promotion of global sharing of germplasm information
3.I. CONSERVATION STATUS OF SERICULTURE GERMPLASM RESOURCES IN JAPAN
1. Introduction
2. Conservation of silkworm genetic resources in Japan2.1 In Present status of silkworm germplasm maintenance in NIAS
2.2 Management and utilization of silkworm germplasm resources2.2.1 Methodology for maintenance of silkworm germplasm resources
2.2.2 Methodology for silkworm pure lines maintenance
2.2.3 Methodology for obtaining the data and calculation of the main breeding characters and values2.3 Recent Development of silkworm germplasm resources
2.3.1 Virus resistant silkworm race
2.3.2 The races that has characteristic silk thread
2.3.3 Utilization of colored cocoon and double cocoon
2.3.4 Transgenic silkworm
2.3.5 Problem of the retirement from silkworm preservation
2.3.6 Revival of old race: the Koishimaru phenomenon3. Silkworm germplasm database
3.1 Management and utilization of database
3.2 Descriptors/Stock Characterization3.2.1 Characterization of the silkworm genetic stock
3.2.2 Evaluation of silkworm genetic resources3.3 Promotion of global sharing of silkworm germplasm resources
3.3.1 Sharing Information about the silkworm genetic resources
3.3.2 Sharing Silkworm genetic resources
3.II. CONSERVATION STATUS OF SILKWORM GENETIC RESOURCES FOR MUTATIONS IN JAPAN
1. Introduction
2. Conservation of Silkworm Genetic Resources for Mutations in Japan2.1 Present status of germplasm maintenance
2.2 Management and utilization of germplasm resources
2.3 Development of germplasm resources3.1 Management and utilization of database
3.2 Descriptors/Stock Characterization
3.3 Samples of germplasm directory or stock catalogue
3.4 Promotion of global sharing of germplasm informationStock catalogue in Kyushu University: A - K
Stock catalogue in Kyushu University: L - X
4. CONSERVATION STATUS OF SILKWORM GENETIC RESOURCES IN KOREA
1. Introduction
2. Conservation of Silkworm Genetic Resources in Korea2.1 Present status of germplasm maintenance
2.2 Management and utilization of germplasm resources2.2.1 Silkworm gene resources conservation plan
2.2.1.1 Silkworm egg conservation plan for an emergency
2.2.1.2 Dispersal conservation of major silkworm gene resources and breeding races
2.2.1.3 Long-term conservation study of silkworm gene resources2.3 Development of germplasm resources
2.3.1 Promoting system
2.3.2 Breeding material
2.3.3 Living body utilization (utilization of silkworm as living factory)3.1 Management and utilization of database
3.1.1 Development of management program
3.1.2 Construction of silkworm gene resources database homepage3.2 Stock Characterization
3.3 Promotion of global sharing of germplasm informationAppendix: Stocks race characteristics (first part)
Appendix: Stocks race characteristics (second part)
5. CONSERVATION STATUS OF SILKWORM GERMPLASM RESOURCES IN BULGARIA
1. Introduction
2. Conservation of silkworm genetic resources in Bulgaria2.1 Present status of silkworm germplasm maintenance
2.2 Management and utilization of silkworm germplasm resources2.2.1 Methodology for maintenance of silkworm accessions
2.2.2 Methodology for silkworm pure lines maintenance
2.2.3 Methodology for obtaining the data and calculation of the main breeding characters values2.3 Development of silkworm germplasm resources
2.3.1 Segregation from foreign F1 hybrids
2.3.2 Separation from foreign F1 hybrids
2.3.3 Using populations of Japanese races
2.3.4 By making initial hybrid populations for further breeding
2.3.5 Methods of breeding sex limited for egg color and larval marking races
2.3.6 Method of breeding sex limited for larval marking races as analogues of pure lines of approved commercial hybrids
2.3.7 Method of breeding tolerant to adverse rearing conditions silkworm races
2.3.8 Main criteria for the desired level of breeding characters and selection
2.3.9 Methods for creation commercial hybrids3. Silkworm germplasm database
3.1 Management and utilization of database
3.2 Descriptors/Stock characterization3.2.1 Characterization of silkworm genetic resources
3.2.2 Evaluation of silkworm genetic resources
3.2.3 Evaluation of Bulgarian silkworm F1 hybrids3.3 Promotion of global sharing of silkworm germplasm information
3.3.1 Sharing information about the silkworm genetic resources
3.3.2 Sharing silkworm genetic resources
6. CONSERVATION STATUS OF (MULBERRY, SILKWORM) GENETIC RESOURCES IN FRANCE
1. Introduction
2. Conservation of Silkworm Genetic Resources in France2.1 Present status of germplasm maintenance
2.2 Management and utilization of germplasm resources
2.3 Development of germplasm resources3. Silkworm germplasm Database
4. General Conclusion
Annexe 3
7. CONSERVATION STATUS OF BOMBYX MORI (SILKWORM) GENETIC RESOURCES IN ITALY
1. Introduction
2. Conservation of Silkworm Genetic Resources in Italy2.1 Present status of germplasm maintenance
2.2 Management and utilization of germplasm resources
2.3 Development of germplasm collection3.1 Management and utilization of database
3.2 Descriptors/Stock Characterization
3.3 Samples of germplasm directory or stock catalogue
3.4 Promotion of global sharing of germplasm information3.5 Application and utilization of germplasm database for farmers and extension workers training
Annex 1 - Complete list of silkworm strains
Annex 2 - References