Breeding of Vegetable, Spice and Tuber crops (2+1)

Procedure for Bulk Method

• Procedure
  
• Bulk method of plant breeding comprises of following main steps.

 

Step	Details
Hybridization	Crossing among selected parents
F1 generation	F1 seeds (minimum 20) planted. Bulk harvesting is carried out.
F2 to F6 generation	F2 to F6 are planted, harvested in bulk. Number of plants should be as large as possible. Generally artificial selection is not carried out.
F7 generation	Generally 30 to 50 thousand F6 seeds are space planted, selection is carried out based on phenotype and 1000 to 5000 selected ones are harvested separately.
F8 generation	Individual plant progenies are grown, inferior progenies eliminated. Harvested in bulk.
F9 generation	Preliminary yield trials with standard varieties as check. Selection is based on yield.
F10 to F13 generation	Multi location yield trials are conducted using standard varieties as check. Evaluation of performance of lines is done.
F14 generation	Seed multiplication for distribution.