“Plant breeding is the deliberate modification of plant attributes to produce new kinds with a desired set of features.Plants of greater grade are chosen and crossed to produce plants of the desired quality. As a result, a plant population with better and desired features emerges.Let’s take a closer look at the goals and processes involved in plant breeding.

The Goals of Plant Breeding

The following are the main goals of plant breeding:

• In order to boost agricultural output.
• To produce plants with certain traits.
• The goal is to create a disease-resistant crop.
• To create plants that can withstand high levels of environmental stress.

Plant Breeding Types

Plant breeding can be divided into the following categories: Backcrossing is a technique in which a plant with desirable features is crossed with a plant that lacks those traits but has several others.

Inbreeding

Self-fertilization occurs as a result of this. Generation after generation, the progeny created are identical. This aids in the preservation of the original characteristics.

Breeding of Hybrids

Two different breeds are crossed in order to produce children that are more productive than their parents.

Breeding Mutations

Plant genes are mutated, resulting in new varieties. Plants can also be genetically modified by exposing them to chemicals or radiation.

The use of genetic engineering

By adding the desired gene into the crop DNA, genetic engineering aids in the production of crops with desirable features. GMO crops are those that have been genetically engineered. Bt crops, for example.

Steps in Plant Breeding

Since its inception between 9000 and 11000 years ago, plant breeding practices have experienced numerous changes. The contemporary plant breeding approach consists of the following steps:-

Variability Collection

All breeding practices are based on variation. The first stage is to gather germplasm, which is a collection of plants or seeds that contain all potential alleles for all genes in a certain crop. Even wild variations and relatives of farmed plants are included in this collection.

Parent Plants Evaluation and Selection

The germplasm is analysed in order to find parent plants with the necessary traits. The hybrid progeny is predicted to have a combination of these features.

A plant crop with a high protein content, for example, could be crossed with a plant that is more disease resistant.

Selected Parents’ Cross-hybridization

The parents are cross-hybridized in the third phase to create pure lines of progenies. 

This is a time-consuming and arduous process of transferring pollen from one plant to the stigma of another. Despite the effort, just one or two progenies out of a few hundred exhibit the desirable features.

Superior Recombinant Selection and Testing

After that, the generated progenies are examined, and those with the required mix of features are self-pollinated to achieve homozygozygozity.

New Cultivars: Testing, Release, and Commercialization

The new lines are planted in research fields and examined for agronomic properties such as quality, yield, disease resistance, and so on. Following that, these crops are grown in farmers’ fields around the country, representing various agro climatic zones. The crops are commercially released for public consumption after achieving positive results.

CONCLUSION

Plant breeding is the deliberate modification of plant attributes to produce new kinds with a desired set of features.”Plants of greater grade are chosen and crossed to produce plants of the desired quality. As a result, a plant population with better and desired features emerges.

Let’s take a closer look at the goals and processes involved in plant breeding.