What is plant host resistance?

Host plant resistance pertains to a plant’s ability to resist damaging insect invasions. Some plants use their physical appearance as a deterrent such as plants that have hair covering their leaves or plants with a thick leaf cuticle. With biotechnology, came a new form of host plant resistance.

What is HPR and tolerance?

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. species” (Painter, R.H., 1951).

What is biological control of weeds and pests?

Biological control or biocontrol is a method of controlling pests such as insects, mites, weeds and plant diseases using other organisms. It relies on predation, parasitism, herbivory, or other natural mechanisms, but typically also involves an active human management role.

What are the biological control agents of weeds?

All forms of macrobial and microbial organisms are considered as biological control agents. Examples of biological control agents include, but are not limited to: arthropods (insects and mites), plant pathogens (fungi, bacteria, viruses, and nematodes), fish, birds, and other animals.

What is meant by host plant?

Host plants are plants that an organism lives on and lives off of. Think of the pickiest eater you know. They might not like a wide variety of foods, but they probably still eat more than one thing. Imagine only being able to eat one thing. That’s what it’s like for insects who have a specific host plant!

What are the methods to control weeds?

Methods to control your weeds

  • Mowing and Cutting. Mowing and cutting can decelerate the production of seed and can limit the growth of weeds.
  • Weed Pulling.
  • Stabbing.
  • Mulching.
  • Girdling.
  • Tilling.
  • Soil Solarisation.
  • Flooding.

What is host plant resistance Quizlet?

Host-plant resistance is the inherited ability of a plant species to resist attack by pests or diseases, or to be able to tolerate damage caused by these biological agents. Although some farmers use their own seeds from landrace varieties, others have rapidly adopted new, improved varieties.

What is host plant resistance (HPR)?

Lecture 16 : HOST PLANT RESISTANCE – DEFINITION – TYPES AND MECHANISMS ECOLOGICAL AND GENETIC 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 species” (Painter, R.H., 1951).

How does biocontrol affect the weed population?

When a lot of weeds build up, the next year there will be a lot of bugs. Those bugs will eat the weeds, so the following year there will be fewer weeds to support bugs, and the bug population will crash. in the PNW Weed Management Handbook provides details on various biocontrol methods.

Do biocontrol agents work on weeds in Oregon?

Most of the important biocontrol agents against weeds are already populating the noxious weeds in Oregon. If you don’t find biocontrol bugs on your weeds, you can collect them from other sites and release them on your weeds. ), located in Montana.