Question

Plants can be made disease resistant through

• A. X-ray treatment
• B. (D) Hormone treatment
• C. Colchicine treatment
• D. Breeding with wild relatives
  

Answer 1

The correct option is D Breeding with wild relatives


Colchicine treatment
Colchicine is a mutagen that prevents the microtubules formation and doubles the number of chromosomes. It is used to develop polyploid plants.
X-ray treatment
X-ray treatment helps in the growth of plants. It has little effect on the development of seeds.
Wild relatives of crops
Wild relatives of crops are the wild plant species which are genetically related to cultivated crops. They possess traits like drought tolerance, pest resistance or disease resistance. The breeders use these plants to cross with domesticated crops to produce new varieties. Hence the wild species of agricultural crops increase the adaptive capacity of agricultural plants.
Hormone treatment
Hormone treatment is used for fruit ripening, root and shoot growth. Examples include ethephon, a compound that releases ethylene.
Final answer
(C) Breeding with wild relatives