Britannica
Sources used in this answer
- plant disease - Host resistance and selection
- gene-for-gene coevolution
- plant disease - Obtaining disease-resistant plants
- horticulture - Pest control
- plant breeding - Goals
- weed - Chemical control
- plant disease - Nature and importance of plant diseases
- Agricultural technology - Control of plant diseases and nematodes
Why is breeding disease-resistant crop varieties an important form of pest control?
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Plant breeding
Triticale is a hybrid of rye and wheat.
Breeding disease-resistant crop varieties is a vital form of pest control because it provides an effective, safe, and relatively inexpensive method for managing plant diseases and other pathogens. By incorporating natural genetic resistance directly into the plant, breeders create a preventive solution that reduces the need for curative measures, such as the heavy application of chemical pesticides.12
This approach is particularly important for several reasons:
- Economic Efficiency: For low-value crops where other control methods are impractical or too expensive, resistant varieties are often the only viable way to ensure production.1
- Sustainability: Unlike chemical treatments, which may pose environmental or health risks, host resistance is an inherent trait that protects the plant from within.12
- Food Security: Developing resistant varieties is a primary goal of plant breeding programs, as it helps protect staple crops from epidemics that could otherwise lead to catastrophic yield losses and famine.34
While pathogens can mutate to overcome resistance, breeders continue to use hybridization and other techniques to develop more durable, resilient crops, making this a cornerstone of modern agricultural crop protection.32