Due to the wide use and increasing recognition of cannabis (Cannabis sativa L.), search for new varieties and the need for breeding is increasing. Cannabis is a very interesting plant for cultivation because of its physiological and morphological characteristics. These aspects also affect potential approaches to obtain new varieties. Many breeding techniques are already in use for cannabis. One of the techniques is to induce haploids, which are plants with gametic number of chromosomes. Successfully acquiring a haploid line and then doubled haploids, would make it easier to obtain F1 hybrid lines that currently do not exist in cannabis. Hybrid lines are genetically and phenotypically uniform. Expressed heterosis would induce better traits in hybrids than in parental lines. There are several techniques for haploid induction like gynogenesis in situ and in vitro and androgenesis. We described these techniques and leaned on processes developed on other plant species, as well as on researches on cannabis that could play a role in these processes.
|
