The mechanism and inheritance of intraflower self-pollination in self-pollinating variant strains of periwinkle |
| |
| Authors: | R N Kulkarni Y Sreevalli K Baskaran S Kumar |
| |
| Institution: | Central Institute of Medicinal and Aromatic Plants (CIMAP), Field Station, Allalasandra, Bangalore 560 065, India;CIMAP, Lucknow 226 015, India |
| |
| Abstract: | The mechanism and inheritance of intraflower self‐pollination in self‐pollinating variant strains of periwinkle was studied using three self‐pollinating and two non‐self‐pollinating but fully self‐fertile strains. Intraflower self‐pollination in self‐pollinating strains occurred due to the continued growth of the gynoecium beyond the base of the anthers, even after anthesis, resulting in intraflower self‐pollination. In non‐self‐pollinating strains, the stigma remained below the base of the anthers and did not come into contact with the pollen up to flower drop. Intraflower self‐pollination was found to be governed by duplicate recessive genes. The utility of the intraflower self‐pollination trait in the breeding of periwinkle cultivars is discussed. |
| |
| Keywords: | Catharanthus roseus inheritance intraflower self-pollination |
|
|
