Читать книгу The Cannabis Grow Bible - Greg Green - Страница 49

Cannabis has been widely studied with regards to its sexual systems because of observable and repeatable sex reversal conditions.⁴¹ The usual expectancy of an XY sex-determination system was confirmed in 1924 by K. Hirata,⁴² but was disputed by J. H. Schaffner in 1925, who found through his own sex reversal studies in hemp that an X:A system was present and highly influenced by environmental conditions. ⁴³ There is doubt over how the XY system occurs in cannabis, with statements that the Y chromosome is slightly larger than the X being difficult to distinguish.⁴⁴ What is important to understand is that cannabis may be stressed to express all forms of sex within the same population.

Most strains that you will come across are the result of human intervention. Breeders try to produce strains that are tasty, smell good, and give the user different types of highs. Good strains are widely sought after by growers because you can be guaranteed that the seller of the seeds knows a great deal about the plant and its particular history.