Characters of  multivoltine hybrid seed

1. Eggs are non-pigmented and non-hibernating.
2. Eggs hatch after 10 days of egg laying.
3. Acid treatment is not required to make eggs hatch.
4. Sheet egg method is applied for egg production.
5. Eggs cannot be stored for more than 20 days in 5 °C.
6. Bivoltine male moths and multivoltine female moths are used for production of hybrids.
7. Sexes are separated at moth level for production of hybrids.

Characters of  multivoltine hybrid seed (CSR)

1. Eggs are pigmented and hibernating.
2. Eggs do not hatch after 10 days of egg laying naturally.
3. Acid treatment is required to make the eggs hatch after 10 ~ 11 days.
4. Eggs are produced by loose egg production method.
5. Eggs can be stored up to 6 months under 2.5 °C and 5 °C.
6. Male and female moths of bivoltine are used for crossing reciprocally.
7. Sexes are separated at pupa level for production of hybrids.