Q.What are the various advantages of using genetically modified plants to increase the overall yield of the crop?

Genetically modified plants offer several key advantages that directly contribute to increasing overall crop yield and ensuring food security.

These advantages include:

• Increased tolerance to abiotic stresses such as cold, drought, salt, and heat, allowing crops to thrive in challenging environments.
• Reduced reliance on chemical pesticides, as many GM crops are engineered to be pest-resistant, thereby protecting the yield from insect damage.
• Decreased post-harvest losses, ensuring more of the harvested produce reaches consumers.
• Enhanced efficiency of mineral usage by plants, which helps prevent the early exhaustion of soil fertility and supports sustained growth. …

The pursuit of increasing agricultural output to feed a growing global population has led to significant advancements in biotechnology, particularly in the development of genetically modified (GM) plants. Genetic modification involves altering the genetic makeup of an organism by introducing new genes or modifying existing ones to achieve desired traits. When applied to crops, this technology aims to overcome traditional limitations in agriculture, directly contributing to a higher overall yield.

Here are the various advantages of using genetically modified plants to increase crop yield:

• Increased Tolerance to Abiotic Stresses: One of the major challenges in agriculture is the vulnerability of crops to harsh environmental conditions. GM plants can be engineered to withstand abiotic stresses such as extreme cold, drought, high salinity, and excessive heat. By incorporating genes that confer resistance to these conditions, crops can survive and thrive in environments where conventional varieties would fail or suffer significant yield losses. This resilience ensures more consistent and higher productivity even under adverse climatic circumstances.

• Reduced Reliance on Chemical Pesticides: Pests and diseases are a constant threat to crop health, often necessitating the extensive use of chemical pesticides, which can be costly and environmentally harmful. Genetically modified plants can be engineered to produce their own protective compounds, making them inherently resistant to specific pests. A prominent example is Bt cotton, which incorporates genes from the bacterium Bacillus thuringiensis to produce a protein toxic to certain insect pests. This internal defense mechanism significantly reduces crop damage, minimizes the need for external pesticide application, and consequently leads to a higher, healthier yield.

• Reduced Post-Harvest Losses: A substantial portion of harvested crops can be lost due to spoilage, bruising, or rapid ripening during storage and transportation. Genetic modification can address this by altering genes responsible for ripening processes or susceptibility to decay. For instance, some GM crops have been developed with delayed ripening characteristics, extending their shelf life and ensuring that a greater quantity of the harvested produce reaches consumers in good condition, thereby increasing the effective yield. …

Method — attach each advantage to the SPECIFIC yield-loss it prevents

• Pest resistance → prevents loss to insect damage (Bt crops).
• Abiotic-stress tolerance → prevents loss to drought/salt/cold.
• Reduced post-harvest loss → prevents loss AFTER harvest, not during growth.
• Better nutrient-use efficiency → prevents loss to poor soil fertility. …