Ento-403 Plant resistance to insect pests

Course Title: PLANT RESISTANCE TO INSECT PESTS

Course Code: ENT-403

Credit Hours: 3(2-1)

Instructor: DR. MUHAMMAD ASAM RIAZ

DESCRIPTION& OBJECTIVES

The basic objective of this course is to prepare students to

Understand the mechanism of plant resistance against insects.
Role of plant morphological and physiological features in plant resistance against insect pests.
Understand the role of entomologist in breeding of crops.

The practical portion is planned to direct students towards measurement of plant characters (morphological and physiological) involved in resistance against insect pests. Students will collect the data on different resistant and susceptible cultivar of economically important crops.

READINGS

Panda, N. 1980, Principles of Host Plant Resistance to Insect Pests, Allenheld, London

Panda, N. and G.S.Khush, 1995, Host plant resistance to insects, IRRI, Printed and Bound in UK, Biddles Ltd. Guildford, UK

Pedigo, L.P, 1996, Entomology and Pests Management, 2nd ed. Prentice Hall, Inc, London

Sadasaban. 2003. Molecular Host Plant Resistance to Pests. 90423.

Subba Rao, N.S., C. Balagopalan and S.V. Ramakrishna (Edts) 1992, New Tends in Biotechnology. Oxford and IBH Publishing Co. Pvt. Ltd. New Delhi

CONTENTS

Theory:

Introduction; mechanism of resistance: ecological, physiological, asynchrony, induced genetic antixenosus, antibiosis and tolerance; factors of resistance; genetic basis of resistance; effect of environment on resistance; biotypes and resistance; measurement of resistance; development of resistant varieties; role of entomologist in breeding for resistance and transgenic crops.

Practical:

Testing and measurement of relative plant resistance to insects in different crops and transgenic plants.

COURSE SCHEDULE

Week	Topics and Readings
1.	Introduction of plant resistance
2.	Mechanism of resistance in plant
3.	Insect host-plant relationship
4.	Type of resistance in plants (Ecological resistance-host evasion, induced resistance, host escape)
5.	Type of resistance in plants (Genetic nature of resistance-gene for gene relationship)
6.	Type of resistance based on inheritance
7.	Mechanism of resistance in insects (Avoidance, excretion, sequestration, metabolic resistance, Target site)
8.	Mid exams
9.	Mechanism of resistance in insects (Avoidance, excretion, sequestration, metabolic resistance, Target site)
10.	Factor mediating plant resistance (Physical factors)
11.	Factor mediating plant resistance (Biological factors)
12.	Natural defense mechanism (Salicylic acid pathway)
13.	Natural defense mechanism (Jasmonic acid pathway)
14.	Natural defense mechanism (Shikimic acid pathway)
15.	Traditional development of resistant varieties
16.	Role of entomologist in resistance and transgenic crops
17.	Final Exam