What is host plant resistance?
Host Plant Resistance (HPR)
Definition. “Those characters that enable a plant to avoid, tolerate or recover from attacks of. insects under conditions that would cause greater injury to other plants of the same.
What is host plant resistance and discuss its advantages as a component in IPM?
Another aspect of an IPM program involves taking advantage of adaptations that many plants have to avoid or tolerate insect or disease pests. Host plant resistance (HPR) makes use of the fact that all wild plants have many adaptations to protect themselves from insect herbivores and diseases.
In what way will host plant resistance probably is most use in IPM?
In IPM, plant resistance to insects refers to the use of resistant crop varieties to suppress insect pest damage. … Antibiosis resistance affects the biology of the insect so pest abundance and subsequent damage is reduced compared to that which would have occurred if the insect was on a susceptible crop variety.
What is the importance of host plant resistance?
Host plant resistance (HPR) to insects is an effective, economical, and environment friendly method of pest control. The most attractive feature of HPR is that farmers virtually do not need any skill in application techniques, and there is no cash investment by the resource poor farmers.
What is host resistance control method?
Resistance is directed at the host in an attempt to produce plants that are unaffected by or can withstand the pathogen per se; chemical control aims at the pathogen in an attempt to destroy it before or immediately after invasion and to prevent extensive colonisation and sporulation; cultural control aims at changing …
What are the mechanism of host plant resistance?
The mechanisms of resistance include: non-preference, antibiosis and tolerance. Examples of the effects of both non-preference and antibiosis resistance on insect numbers are given.
What happens if the host plant is resistant variety?
The outcome of resistant variety is that the plant just grows or produces better than another variety.
What do you understand by plant resistance?
Plant resistance is normally defined as the heritable ability of plants to escape attacking enemies, partially or fully, thus minimizing the amount of damage experienced by the plant (Painter, 1951; Mitchell et al., 2016).
What are the three mechanisms of plant resistance to insects?
Mainly, there are three types of insect resistance in plants: Antibiosis, Antixenosis or Non-preference and Tolerance.