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. 2020 Jun 25;11:718. doi: 10.3389/fpls.2020.00718

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Copyright © 2020 Punja and Holmes.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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PCR analysis to identify male and female seedlings of Cannabis sativa. In female plants, a band of approximately 540 bp in size was observed, while in male plants, a 390 bp size band was always observed and the 540 bp band was sometimes detected. (A,B) Strain “Moby Dyck” and “Blue Deity” showed a 5:7 and 9:5 ratio of male (M) and female (F) plants, respectively, from seeds derived from a male:female cross. (C) Strain “Healer” showed a 2:14 ratio of male:female plants. (D,E) All female plants derived from seeds resulting from hermaphroditic flowers of strains “Moby Dyck” (D) and “Space Queen” (E). (F) PCR analysis of anther tissues (A) showing female composition compared to male (M) and female (F) plants. Water control with no DNA (C) and 1 kb DNA ladder (NEB Quick-Load^®) (L).