Host Plant Resistance

Cultural Control Definition

• Preventive strategies aimed to reduce pest populations through agronomic practices of low environmental impact.

2011 Ento 401 Class

Host Plant Resistance

Is the collective heritable characteristics by which a plant species, race, clone or individual may reduce the possibility of successful utilization of that plant as a host by an insect species, race, biotype or individual.

Ch

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ical

Bio

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ical

Bio

log

ical

Cu

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ral

Cu

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Pla

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stan

ceP

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t re

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ance

IPMIPM

Case Study: The French Grape CrisisCase Study: The French Grape Crisis

Case Study: The French Grape CrisisCase Study: The French Grape Crisis

C. V. Riley

• Antibiosis

• Antixenosis

• Tolerance

Theoretical ApproachesTheoretical Approaches

Methodological ApproachesMethodological Approaches

• Mendelian approach

• Biometrician’s approach

• Biotechnologist’s approach

Resistance to Bt crops

Bt crop

Non-Bt crop(refuge)

Molecular markers

Plant defenses

• Constitutive

• Induced

Plant defense

Future goal of plant resistance:

• To incorporate plant defense genes into crops.