The heritability and repeatability of various characters affecting thebaine and seed
yields in Papaver bracteatum were estimated from parents and progeny families during two consecutive years of
growth. Thebaine and seed yields per plant showed the lowest heritability and therefore
low selection response. High selection responses were obtained for thebaine content
of the capsules and mean weight per capsule, and are therefore the most appropriate
criteria for increasing the thebaine yield per plant or per unit area. Similarly seed
yield per capsule is more advantageous as a selection criterion for increasing the
yield of seeds.
Papaver bracteatum - Heritability - Repeatability of Thebaine Yield - Selection -
Selection Response
