Question: A message can only be deemed effective when it is…? (IFFCO 2022)
Options:
Non-preference
Tolerance
Antibiosis
Resistance
• Antibiosis is a type of plant resistance where the plant has a negative impact on the insect that feeds on it. This can manifest in various ways:
Antibiosis is a valuable mechanism in plant defense and is often utilized in breeding programs to develop insect-resistant crops.
📌 Other Options Explanations:
-Non-preference: This refers to the insect's avoidance of a particular plant due to its physical or chemical characteristics.
-Tolerance: This is the plant's ability to withstand insect damage without significant yield loss.
-Resistance: Various mechanisms of plant defense against insects, including antibiosis, non-preference, and tolerance.
🔑Key Points:
• Antibiosis:
-Antibiosis refers to the adverse effect of the host plants on the development and reproduction of insect pests, which feed on the resistant plants.
-Resistant plants retard the growth and rate of reproduction of insect pests.
-In some cases, antibiosis may lead even to the death of an insect.
-Antibiosis is considered the true form of resistance to insect pests and may involve morphological, physiological, and biochemical features of the host plant.Â