Mutagenesis-Inducing Variation Marijuana Horticulture by Jorge Cervantes If variation does not exist for the trait or traits of interest, or cannot be found in other populations, it is theoretically possible…

Ploidy Marijuana Horticulture by Jorge Cervantes Cannabis plants are, by nature, diploids with twenty chromosomes. At meiosis, each parent’s gamete contributes ten chromosomes to the zygote they have formed. Cannabis…

Pedigree Selection Marijuana Horticulture by Jorge Cervantes A system of breeding in which individual plants are selected in the segregating generations from a cross on the basis of their desirability,…

Recurrent Selection Marijuana Horticulture by Jorge Cervantes Any breeding program designed to concentrate favorable genes scattered among a number of individuals by repeating cycles of selection for favorable traits. Step…

Single-seed Descent Marijuana Horticulture by Jorge Cervantes A plant is self-fertilized and the resulting seed collected. One of these seeds is selected and grown, again self-fertilized, and seed produced. All…

Selfing Marijuana Horticulture by Jorge Cervantes Selfing is the process of creating seed by fertilizing a plant with pollen obtained for itself. The result of the self-cross is a population…

Backcross Breeding Marijuana Horticulture by Jorge Cervantes A type of breeding that involves repeated crossing of progeny with one of the original parental genotypes; cannabis breeders most often cross progeny…

Filial Breeding Marijuana Horticulture by Jorge Cervantes A type of breeding system where siblings of the same progeny lot and generation are intermated to produce new generations. The first hybrid…

Outbreeding Marijuana Horticulture by Jorge Cervantes Outbreeding is the process of crossing or hybridizing plants or groups of plants with other plants to which there is no, or only a…

Inbreeding Marijuana Horticulture by Jorge Cervantes Inbreeding is nothing more than crossing a group, family, or variety of plants within themselves with no additions of genetic material from an outside…

Breeding Schemes for Cross-Pollinated Crops Marijuana Horticulture by Jorge Cervantes There are many types f breeding programs, some more complex than others. Which breeding method to employ depends entirely on…

Synthetic Variety Marijuana Horticulture by Jorge Cervantes An interbreeding population derived from inter-mating a group of specific genotypes, each of which were selected for good combining ability in all possible…

Multi-line Marijuana Horticulture by Jorge Cervantes Two or more pure-breeding lines, which are very similar, but differ in a small part of the overall phenotype (i.e. maturation, disease resistance). The…

Heirloom Varieties Marijuana Horticulture by Jorge Cervantes Heirloom seeds are the product of many years of selective planting and seed saving. The original seeds bore a plant or flower that…

Open Pollinated Varieties Marijuana Horticulture by Jorge Cervantes Non-hybrid populations reproduced by random pollination within the variety. Al pistillate individuals have the potential to mate with all staminate individuals as…