Breeding Methods

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Presentation Description

Pedigree method, bulk method and SSD Method of Breeding

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Presentation Transcript

Slide 1: 

Polygenic transfer is generally not possible by simple backcross schemes HYBRIDIZATION

Slide 2: 

………..to combine resistance + other desirable characters of the second variety Pedigree method Variety 1 Variety 2 Susceptible Poor quality Tall Low tillering Large seeds More pods Resistant Good quality Dwarf High tillering Moderate yielding Small seeds Less pods x Variety 3 Large seeds More pods Resistant Good quality Dwarf High tillering

Slide 5: 

F2 densely planted From each plant one seed is picked up and bulked F3 densely planted From each plant random seed is picked up and bulked As in F3 As in F3 F6 space planted 100-500 plants with desirable characteristics harvested seperately. Individual plant progenies grown Weak and undesirable progenies eliminated Desirable homozygous progenies are harvested in bulk Individual plants may be selected in outstanding progenies showing segregation. Preliminary yield trials with suitable check Quality test Coordinated yield trials Seed increase Single Seed Descent Method