Question

Hybrid vigour is best maintained in vegetatively reproducing plants because they are

• A. Easily propagated
  
• B. Resistant to diseases
• C. Little liable to lose vigour due to absence of sexual reproduction
  
• D. With long lifespan
  

Answer 1

The correct option is C Little liable to lose vigour due to absence of sexual reproduction


Hybrid vigour :
Hybrid vigour, also called heterosis is a term to describe the superiority of a hybrid with respect to its growth, yield and fertility over its parents.

Maintenance of the hybrid vigour :
The characteristics of the hybrids are best maintained by vegetative propagation of the hybrids as this is an asexual mode of reproduction where the progeny contains the same genetic composition as the parent hybrid. The gene pool of the hybrids therefore remains the same.