Investigation into polyploidy induction on seed quality and quantity traits of calendula (Calendula officinalis L.)

This experiment evaluated the effect of polyploidy level on quality and quantity seed traits and yield of both yellow and orange genotypes of Calendula officinalis L. as an oilseed crop.
Spraying of 0.06% colchicine onto seedlings was used to induce tetraploid plants.
Diploid and tetraploid-colchicine induced of calendula were having three types of seed: nugget, winged and hook.
Increased yield of the plant but decreased seed plant^‑1, 1000-seed weight, percent germination, and the germination rate was noted with increasing ploidy level in both yellow and orange genotypes, irrespective of the seed form.
The number of nugget-form seeds was increased in tetraploid plants in comparison to diploid, but the number of winged-form and hooked-form of the tetraploid plant was decreased.
The 1000-seed weight, percent germination, and germination rate were significantly reduced in the three seed forms of tetraploid, as compared with diploid plants.
In contrast, the highest plant yield was observed in the nugget form of the tetraploid plant in comparison to other seed forms.

I International Conference and X National Horticultural Science Congress of Iran (IrHC2017)

S. Alavipour, M. Chehrazi, E. Khaleghi

polyploidy induction, seed type, germination, plant yield

https://doi.org/10.17660/ActaHortic.2021.1315.92