Triticale Breeding

 

Producing primary triticales in the greenhouse 

 

The following scheme illustrates how primary triticales are made by single crosses:

 

Mother  Father  Primary Triticale 
Soft wheat, hexaploid, Genome: AABBDD  Rye, diploid, Genome: RR   Primary triticale, octoploid, Genome: AABBDDRR  
Hard wheat, tetraploid, Genome: AABB  Rye, diploid, Genome: RR  Primary triticale, hexaploid, Genome: AABBRR 

 

Secondary triticales are obtained by crossing two differently composed primary triticales as shown below:

 

Mother  Father  Secondary Triticale 
Primary triticale, octoploid, Genome: AABBDDRR  Primary triticale, hexaploid, Genome: AABBRR  Secondary Triticale, hexaploid, Genome: AABBRR  

 

The diversity of triticale lines can be augmented by producing substitution triticales as follows:

 

Mother  Father  Substitution Triticale 
Soft wheat, hexaploid, Genome: AABBDD  Secondary triticale, hexaploid, Genome: AABBRR  Substitution triticale, hexaploid, Genome: AABBRR or AABBRD 

 

For a better understanding, the above schemes have been simplified. Mostly, a qualified variety is made up more complicated. After crossing work has been finished, selection work is carried out in breeding plots:

 


 

Selection within small plots 

 

Laborious detailed work is necessary to select the promising lines which have to be multiplied and selected anew through several generations for yield and other characters on different locations.

 

Trials 

 

It takes 15 years and more from the first cross to the official release of a variety which is precondition for marketing the seeds.


To continue, click: Breeding Aims