Improving the morphology of Celosia argentea var. plumosa through induced mutation by gamma ray irradiation

Celosia argentea var. plumosa is an annual ornamental species that has inflorescence with attractive colors.
Its ornamental values can be improved through artificial mutation breeding called induced mutation. Celosia has high self-pollination ability, making the post-mutation handling easier compared to those that are cross-pollinated.
The objectives of this research are to identify radiosensitivity of C. argentea var. plumosa and to obtain potential mutants with more diverse morphological traits.
Three genotypes, Yellow, Rose, and Pink, were irradiated with ten different doses of gamma-ray including 0 (control), 300, 400, 500, 600, 700, and 800 Gy.
Irradiation with different doses of gamma-ray inhibits plant growth randomly.
Each genotype has different radiosensitivity to gamma ray irradiation.
The largest reduction in the quantitative traits occurred in 700 and 800 Gy.
Rose genotype irradiated at 600 Gy showed no significant change in the quantitative traits but produced high diversity of qualitative traits.
Most color variations in inflorescence were found in Rose and Pink irradiated at 600 Gy, while the Yellow genotype at 800 Gy.

II International Symposium on Tropical and Subtropical Ornamentals

S.I. Aisyah, A. Buchori, W. Nurcholis

induced mutation, radiosensitivity, ornamental plant, diversity

https://doi.org/10.17660/ActaHortic.2022.1334.8