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Question

Biology Question on Strategies For Enhancement in Food Production

In maize, hybrid vigour is exploited by

A

bombarding the seeds with DNA

B

crossing of two inbred parental lines

C

harvesting seeds from the most productive plants

D

inducing mutations

Answer

crossing of two inbred parental lines

Explanation

Solution

Hybrid varieties were first developed in maize which is a cross pollinated crop. In such crops, the parents of hybrid varieties are, ordinarily, inbred lines. A inbred line is a nearly homozygous line produced by continuous inbreeding in a cross-pollinated crop and is maintained by strict inbreeding. In maize, hybrid vigour or heterosis is exploited by crossing of two inbred parental lines.