A plant breeder developed a hybrid sugarcane by grafting two differents varieties with desirable characters. The resultant hybrid showed as excellent growth and productivity with increased sucrose contant compared to its parental forms.
(i) What does this phenomenon refers to?
(ii) How its condition can be maintained through further generation?

Answer

(i) Heterosis or Hybrid vigour (ii) Vegetative propegation is the best suited measure to maintain the vigourisity of hybrid.