|
Breeding of Hawm Gra Dung Ngah rice for photoperiod insensitivity by molecular-marker-assisted backcrossing |
|---|---|
| รหัสดีโอไอ | |
| Creator | Manlika Jindasing |
| Title | Breeding of Hawm Gra Dung Ngah rice for photoperiod insensitivity by molecular-marker-assisted backcrossing |
| Contributor | Suttirak Plonjarean |
| Publisher | Maejo University |
| Publication Year | 2565 |
| Journal Title | Maejo International Journal of Science and Technology |
| Journal Vol. | 16 |
| Journal No. | 2 |
| Page no. | 89 |
| Keyword | Hawm Gra Dung Ngah rice, photoperiod insensitivity, molecular-marker-assisted backcrossing |
| Website title | Maejo International Journal of Science and Technology |
| ISSN | 1905-7873 |
| Abstract | The duration of light during the day or photo-period has a strong influence on the flowering of the rice plant. The purpose of this study is to breed Hawm Gra Dung Ngah (HGDN) rice variety for non-photosensitivity, which will allow farmers to plant it throughout the year and result in increasing rice yields and reduced risks. By backcrossing, molecular markers were used with HGDN rice as the receptor variety and japonica rice variety (RD 55) as the donor parent and the non-photophobic cultivar. It was found that the hd1 photosensitive genes could be identified by using marker RM 19776 in the seedling stage of the F1, BC1F1, BC2F1 and BC2F2 populations. The phenotype and genotype ratios of the BC2F2 and BC3F2 populations conform to Mendel s theory, in which recessive genes are controlled by one gene. The genetic ratio of photoperiod-sensitive rice to non-photoperiod sensitive rice is 3:1, and 26 plants of the BC2F3 population have a mean flowering date of 124 3.61 days after planting, cf. 140 3.67 days for the original HGDN rice. |
