This course will create awareness of the potential role and their applications of plant growth regulators in Horticultural and agricultural industries. In addition this course will equip students with pre requisite knowledge and skills necessary for the manipulation of plant growth and development processes by using these plant bio-regulators.

Objectives:

At the completion of the course, students will be able to :

  1. Understand the importance plant growth regulators.
  2. Classify plant growth regulators
  3. Identify the potential areas of plant growth regulators applications.
  4. Devise strategy to manipulate plant physiology with application of plant growth regulators for commercial benefits.

Theory:

Introduction, History, classification of growth regulators (PGRs), Biosynthetic pathways, Source sink relationship in relation to PGR, Occurrence and role of growth regulators in plants, Chemical nature of plant regulators and its relation with physiological activities, Theories of action and interactions of growth regulators, Interrelationships between growth regulators and other organic and inorganic plant substances, Applications in horticulture; growth, propagation, parthenocarpy, flower and fruit thinning, control of pre-harvest drop, fruit maturity, dormancy and storage, seed treatment and weed control, Uses in vegetable and flower nursery,  Advances in PGR's.

 

Practical:

Relevant field and Laboratory studies, surveys and assignments, Study of effects of PGRs in propagation, physiology, growth, flower manipulation, ripening and yield of different horticultural plants.

 

Learning Outcomes:

Students must have knowledge of various plant growth regulators and their application for growth manipulation.

Books Recommended:

  • Arteca, R.N. 1997. Plant Growth Substances: Principles and Applications. CBS Publishers and Distributors, New Delhi, India.
  • Basra, A.S. (Ed.). 2007. Plant Growth Regulators in Agriculture and Horticulture: Their Role and Commercial Uses. CRC Press.
  • Davis, P.J. 1995. Plant Hormones: Physiology, Biochemistry and Molecular Biology (2nd Ed.) Kulwer Academic Publishers, Netherlands.
  • Nickell, L.G. 2011. Plant Growth Regulators: Agricultural Uses. Springer, London, UK.
  • Hayat,S. and  ‎A. Ahmad. 2007. Salicylic Acid: A Plant Hormone. Springer, Dordrecht. The Netherlands.
  • Srivastava, L.M. 2002. Plant Growth and Development: Hormones and Environment. Academic Press, U.S.A.
  • Nickell, L.G. 1982. Plant Growth Regulators (Agricultural Uses). Springer‑Verlag, Berlin, Heidelberg, New York.
  • Wearer, R.V. 1992, Plant Growth Substances in Agriculture. W.H. Freeman Co., San Francisco.

Week

Lecture

Contents to be covered (Theory)

Name of Books/Journal/

Article/Internet

Page #

1

1

Introduction to plant growth regulators

Hand out

 

2

Hormones vs plant growth regulators.

Plant hormones; Action and application

1-2

3

General features of plant hormones

Plant growth and development Hormones and Environment.

142-144

2

1

Concept of sensitivity

Plant Hormones (2)

1-13

2

Classification of growth regulators

Hand outs

 

3

Classification of growth regulators

Hand outs

 

3

1

Auxins: Nature and physiological role

Plant growth and development

Hormones and Environment

Plant hormones (1)

155-69

 

 

39-65

2

Auxins: Biosynthesis and inhibition

Plant growth and development

Hormones and Environment

Plant hormones (1)

160-69

 

 

39-65

3

Auxins: Biosynthesis and inhibition

//

//

4

1

Gibberellins: Nature and physiological role

Plant hormones (1)

66-97

2

Gibberellins: Biosynthesis and inhibition

Plant growth and development: Hormones and

66-97

171-190

3

//

//

//

5

1

Kinnins: Nature and physiological role

Plant hormones (1)

Plant growth and development

Hormones and Environment

98-117

191-204

2

Kinnins: Biosynthesis and inhibition

Plant hormones (1)

98-117

3

//

//

//

6

1

ABA: Nature and physiological role

Plant growth and development :

Hormone sand Environment

217-232

2

ABA: Biosynthesis and inhibition

Plant growth and development: Hormones and Environment

217-232

3

//

//

//

7

1

Ethylene: Nature and physiological role

Plant hormones (1)

118-133

2

Ethylene: Biosynthesis and inhibition

Plant growth and development:

Hormones and Environment

233-250

3

//

//

//

8

1

Polyamines: Nature and physiological role

Plant hormones (1)

158-178

2

Polyamines: Biosynthesis and inhibition

Plant hormones (2)

79-85

3

//

//

//

9

Mid Term Exam

10

1

Salicylic acid: Nature and physiological role. Biosynthesis

Plant hormones (1)

188-205

2

Jasmontaes: Nature and physiological role biosynthesis

Plant hormones (1)

179-187

3

//

//

//

11

1

Other plant hormones (Glucose, oligosacaahrins etc)

Plant hormones (2)

74-78

2

Transport of growth regulators

Plant growth and development:

Hormones and environment

285-302

3

Interactions with organic and inorganic plant growth substances.

Hand outs

 

12

1

Application in horticulture: Plant growth and propagation

Plant hormones (2)

Plant hormones (1)

183-208

751-773

2

Application in horticulture: plant propagation

Plant hormones (2)

Plant hormones (1)

183-208

751-773

3

//

//

//

13

1

Application in horticulture: plant flowering

Plant hormones (2)

Plant hormones (1)

183-208

751-773

2

Application in horticulture: fruit thinning

Plant hormones (1)

183-208

3

//

//

//

14

1

Application in horticulture: control of pre harvest drop

Plant hormones (2)

Plant hormones (1)

183-208

751-773

2

Application in horticulture: fruit maturity

Plant hormones (2)

Plant hormones (1)

183-208

751-773

3

Application in horticulture: dormancy

//

//

15

1

Application in horticulture: storage

Plant hormones (2)

Plant hormones (1)

183-208

751-773

2

Application in horticulture seed treatments and weed control

Plant hormones (2)

Plant hormones (1)

183-208

751-773

3

//

//

//

16

Final Term Exam

 

Course Material