2017 Fiscal Year Final Research Report
Establishment of new breeding technique for cultivated mum by using self-compatible Chrysanthemum
| Project/Area Number |
15K07291
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Horticultural science
|
|---|
| Research Institution | Hiroshima University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
草場 信 広島大学, 理学研究科, 教授 (20370653)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Keywords | 栽培ギク育種 / 自家和合性 / キクタニギク / Chrysanthemum |
|---|
| Outline of Final Research Achievements |
Self-incompatibility cultivated-mums are difficult to leave a large amount of offspring after the F2 generation, so modern breeding of cultivated-mums using self-compatible line has been delayed. In order to solve this problem, we introduced self-compatible gene newly discovered from the wild population of diploid chrysanthemum into a hexaploid cultivated mum and segregated 115 lines with various traits from new tetraploid mums that propagate on self-compatibility. Peripheral flowers with spoon-like tip and tubular base of the cultivated mum was selected as a candidate trait, and genetic segregation was examined for this trait of tetraploid F1, BC1F1, BC2F1, BC2F2 and BC2F3 progeny. As estimated theoretically, in the BC2F3 generation, a recessive homozygote with complete tubular ray florets that breeds with self-compatible seeds was isolated.
|
| Free Research Field |
植物遺伝学
|
