Double Haploid breeding
What’s the difference between double haploid and conventional breeding?
To develop and breed new and optimized crop plants the genetic material plays the decisive role: With double haploid breeding lines, plant properties can be genetically fixed in a short time. Therefore the breeding method ensures that the hereditary factors are identically existing in the following generations.
The breeder is able to select desired breeding goals early, save and fast. Double haploid breeding enables 100% homozygosity within one generation. With conventional breeding it takes many generations until the homozygosity is almost complete.
In practice the germ cells of a crop plant will be isolated and then in vitro cultivated by different methods. The plant’s set of chromosomes are usually diploid, so each genetic trait has two possibilities to develop.
If the set of chromosomes will be halved (=haploid) and then doubled (=double haploid) every trait exists only once. In this way homozygous lines with desired property expressions can be generated.