Difference in dihaploids and double haploids?

Answer 1

Haploid genomes contain a single copy of each chromosome while diploid genomes have two homologous copies. Usually organisms with a diploid genome inherit one chromosome of the pair from each parent. Double haploid occurs by doubling of the haploid genome resulting in pairs of chromosomes that are identical, so homozygous at each locus. This can be created artifically by using colchicine, which prevents microtubule polymerisation and therefore chromosome separation at meiosis where the chromosome number would be halved. This procedure is useful during plant breeding because of the homozygous plants produced.

Answer 2

Dihaploid is an individual developed from a tetraploid species and has two copies of the genome i.e. gametic chromosome number of a tetraploid while double haploids are haploid individuals with haploid chromosome sets of two diploid species, such individuals have two sets of genome, one from each species.

Answer 3

Haploid after chromosome doubling produce double haploid whereas dihaploid is the progeny of the doubled haploid