Question

A. Write the two limitations of traditional breeding technique that led to the promotion of micropropagation.
B. Mention two advantages of micropropagation. (c) Give two examples where it is commercially adopted.

Answer 1

Hint: Plant tissue culture is specifically known as micropropagation invented by Frederick Campion Steward. Micropropagation is an artificial process of producing plants asexually through tissue culture techniques. In this artificial process of propagation, plants are produced by vegetative propagation. It involves rapid multiplication of small amount of plant material to produce more progeny

Complete answer:
The different stages of micropropagation include:
Selection of mother plant
Establishment of aseptic culture
-Shoot multiplication
-Root multiplication
-Transplantation
-The two limitations of traditional breeding technique that led to the promotion of micropropagation are
-It is possible between two plants that can sexually mate with each other therefore the addition of new traits is very limited.
-The traditional breeding techniques took a long time and did not produce many offspring.
-Two advantages of micropropagation
-Huge number of plants can be produced in short time period
-Disease free plants can be developed from diseased plants, seedless plants can be multiplied
-Two examples where micropropagation is commercially adopted
-Micropropagation is commercially used for production of ,tomato and banana
-Meristem culture has been used for recovery of healthy plants of potato and sugarcane from diseased plants.
So, the correct answer is “Option A”.

Note: Micropropagation has some disadvantages such as utilization of more labor and cost more money. may be vulnerable to many environmental factors as they have the same genetic material. The major disadvantage is the infected plant sample produces infected progeny