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In maize, hybrid vigour is exploited by
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- crossing of two inbred parental lines
- harvesting seeds from the most productive plants
- inducing mutations
- bombarding the seeds with DNA.
Correct Option: A
Hybrid vigour is also called Hetorosis which is measured in terms of size growth rate/ field and number of other characters. Hybridisation increases vigour and fertility. It is exploited by crosing of two in bred parental lines. It is best maintained in vegetatively reproducing crops because of genetic recombinations.
