host plant resistance. cultural control definition preventive strategies aimed to reduce pest...

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

emic

alC

hem

ical

Bio

log

ical

Bio

log

ical

Cu

ltu

ral

Cu

ltu

ral

Pla

nt

resi

stan

ceP

lan

t re

sist

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.