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.