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NEET2006ZoologyStrategies for Enhancement in Food ProductionActual

In maize, hybrid vigour is exploited by:

Options

  1. Ainducing mutation
  2. Bbombarding the protoplast with DNA
  3. Ccrossing of two inbred parental lines
  4. Dharvesting seeds from the most productive plants

Correct answer

C. crossing of two inbred parental lines

Step-by-step solution

The increase in the traits of hybrid strength due to crossing over is called hybrid vigour or heterosis. The hybrid vigour in maize is exploited by crossing of an inbred parental line. Related Theory The explanation for heterosis phenomenon is based on ideas: (i) every trait of an organism depends on many genes. (ii) Inbreeding depression and heterosis are related to individual genetic diversity. The changes of individual genetic diversity caused by selfpollination and cross-pollination reveals that self-pollinatin

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