Plant breeding

 The following are the methods of breeding autogamous plants.

1. Introduction

2. Selection

a) Pure line selection

b) Mass selection

3. Hybridization and selection

i) Inter varietal

a) Pedigree Method

b) Bulk Method.

c) Single Seed Descent Method.

d) Modified Bulk Method

e) Mass - Pedigree Method.

 ii) Interspecific hybridization

4. Back cross method

5. Multiline varieties

6. Population approach

7. Hybrids.

8. Mutation breeding

9. Polyploidy breeding

10. Innovative techniques

I. Plant introduction

Definition

Taking a genotype or a group of genotypes in to a new place or environment where they

were not grown previously. Thus introduction may involve new varieties of a crop already grown

in that area, a wild relative of the crop species or totally a new crop species for that area.

E.g. a) Introduction of lRRl rice varieties..

 b) Introduction of sunflower wild species from Russia

 c) Introduction of oilpalm in to Tamil Nadu.