Artificial Hybridization in Plants

A technique used to produce new plant types with desirable qualities is artificial hybridization, commonly referred to as plant breeding or crossbreeding. Blending the genetic traits of various plant species or types entails controlled pollination. Breeders can introduce specific features through this procedure, such as disease resistance, increased yield, or greater nutritional value. Artificial hybridization is essential to developing new and improved plant varieties for various uses in agriculture and horticulture.

Table of Contents:

Definition of Artificial Hybridization
Steps of Artificial Hybridization
Practice Problems on Artificial Hybridization
Frequently Asked Questions on Artificial Hybridization

Definition of Artificial Hybridization

Artificial hybridization, commonly referred to as controlled or intentional hybridization, is the intentional act of mating or cross-breeding two dissimilar plant species or types in order to produce new hybrids with desired qualities.

It requires managed pollination and subsequent seed generation. Also, it entails regulating the transport of pollen from one plant to another. In order to create new and improved plant types with certain traits, such as disease resistance, greater yield, or distinctive aesthetic attributes, this strategy is commonly utilised in plant breeding.

Steps of Artificial Hybridization

A number of procedures are involved in artificial Hybridization to achieve regulated pollination and produce new plant hybrids. The general steps of the procedure are listed below:

Selection of Parent Plants

Pick and hybridise two plant species or breeds that exhibit the required qualities. The male plant will act as the pollen supplier, and the female plant will act as the pollen receiver.

Emasculation

Removing the male reproductive organs (stamens) from the female parent plant and avoiding self-pollination are required to ensure controlled pollination with the desired pollen.

Pollination

Pollen from the male parent plant should be applied to the stigma of the female parent plant. This can be accomplished by delicately brushing or dusting the pollen onto the stigma or by transferring the pollen grains using a little brush or cotton swab.

Bagging

Once pollination is complete, shield the blooms from unintended cross-pollination by placing them in a mesh enclosure or breathable bag. This ensures that only the intended pollen is used for fertilisation and prohibits the introduction of pollen from other plants.

Seed Development

Once pollination is successful, the flowers that have been fertilised will grow into either seed pods or fruits. It is important to let them mature fully on the plant before harvesting.

Seed Harvesting

Harvest the fruit or seed pods carefully once they have reached maturity. To be processed and stored further, the seeds should be removed from the pods or fruits and collected.

Seed Germination

To encourage germination, sow the gathered seeds in the appropriate growing medium or environment. For the best seed germination, create the ideal temperature, light, and moisture conditions.

Evaluation and Selection

Observe the traits of the hybrid seedlings as they develop. Examine them for the desired characteristics that you hoped to obtain through hybridization . Choose the seedlings for continued multiplication or breeding that display the required qualities.

The general framework for artificial hybridization consists of these steps. However, depending on the plant species, breeding goals, and breeder skill, particular methods and variants may be used.

Practice Problems on Artificial Hybridization

Q1. What is the intent of emasculation in artificial hybridization ?

A. To remove the anthers from the male parent plant
B. To remove the stigma from the female parent plant
C. To speed up the pollination process
D. To sterilise the plants before crossbreeding

Ans: A. To remove the anthers from the male parent plant.

Emasculation is the process of removing the male reproductive organs (anthers) to avoid self-pollination.

Q2. Which of the following techniques requires moving pollen by hand from one plant to another?

A. Seed harvesting
B. Emasculation
C. Seed germination
D. Hand pollination

Ans: D. Hand pollination.

Hand pollination refers to the process of transferring pollen from one plant to another manually.

Q3. What role does bagging play in artificial hybridization ?

A. To promote self-pollination within the same plant
B. To protect the plants from pests and diseases
C. To promote faster growth of the hybrid seeds
D. To prevent cross-pollination with unwanted pollen

Ans: D. To prevent cross-pollination with unwanted pollen

Bagging is a method used to safeguard pollinated flowers from undesired pollen and guarantee regulated pollination.

Frequently Asked Questions on Artificial Hybridization

Q1. What is the difference between natural and artificial hybridization ?
Answer: Natural hybridization takes place by accidental crossbreeding in nature, but artificial hybridization is a deliberate process aided by people for particular breeding objectives.

Q2. Is the process of artificial Fertilization in plants natural or a genetically modified process?
Answer: Natural plant fertilisation is a technique that involves carefully regulating the pollination of various plant species or variations. It doesn't use methods for genetic alteration. The resulting hybrids may, however, contain characteristics that are desired for particular horticultural or agricultural applications.

Q3. What is the success rate of artificial fertilisation in plants?
Answer: Depending on the species and the precise breeding methods used, the success rate of artificial fertilisation in plants can vary, but it often falls between 10% and 50% or higher.