| Project/Area Number |
13660024
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
園芸・造園学
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
NAKANO Masaru NIIGATA UNIVERSITY, Graduate School of Science and Technology, Associate professor, 大学院・自然科学研究科, 助教授 (00262460)
|
|---|
| Project Period (FY) |
2001 – 2003
|
| Project Status |
Completed (Fiscal Year 2003)
|
| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2001: ¥1,400,000 (Direct Cost: ¥1,400,000)
|
|---|
| Keywords | Microprotoplasts / Liliaceous plants / cell fusion / protoplasts / Lilium spp. / Agapanthus praecox ssp. orientalis / Muscari armeniacum / Hosta sieboldiana / ホトトギス類 / 微小核 / ヘメロカリス / 懸濁培養細胞 / 花粉母細胞 |
|---|
| Research Abstract |
Toward the application of microprotoplast fusion to genetic improvement of Liliaceous ornamental plants, 1)establishment of regenerable callus or cell suspension cultures, 2)development of protoplast culture systems, and 3)development of systems for isolating microprotoplasts, were examined.
1)Highly regenerable callus cultures were established in Agapanthus praecox ssp. orientalis and Muscari armeniacum, and highly regenerable cell suspension cultures were established in Hosta sieboldiana.
2)By utilizing callus cultures established, protoplast culture systems were developed in A. praecox ssp. orientalis and M. armeniacum. However, further studies are necessary to improve the efficiencies of callus formation from protoplasts and plant regeneration from protoplast-derived calluses.
3)Two different systems for isolating microprotoplasts, one from partially synchronized cell suspension cultures of Hemerocallis hybrida(somatic microprotoplasts) and the other from developing microspores of Lilium longiflorum(gametic microprotoplasts) were developed. As compared with the somatic microprotoplast system, the gametic system seems to be more practical in Liliaceous ornamental plants.
The systems developed in the present study may pave the way for the transfer of one or a few chromosomes via microprotoplast fusion in Liliaceous ornamental plants. Chromosome addition lines produced via microprotoplast fusion may contribute to chromosome studies as well as genetic improvement in these plants.
|
