Characterization; Genome Sizes and Morphology of Sex Chromosomes in Hemp (Cannabis sativa L.)
Koichi Sakamoto, Yukio Akiyama, Kiichi Fukui, Hiroshi Kamada and Shinobu Satoh
https://www.jstage.jst.go.jp/article/cytologia1929/63/4/63_4_459/_pdf/-char/en
the diploid genome sizes in female and male plants of C. sativa are estimated to be 1636•}7.2 (S.D.) and 1683•}13.9 (S.D.) Mbp, respectively (Table 1).
Female and male C. sativa have XX and XY chromosomes with 18 autosomes, respectively.
Condensation patterns were observed in the Giemsa-stained female and male C. sativa chromosomes at the pro-metaphase stage (Figs. 2A, 2B). The Y chromosome, the largest chromosome, is
subtelocentric and has a large long arm with a satellite in the terminal of its short arm. The X chromosome was found to be submetacentric with a short satellite at the end of the short arm.
Table 1. Nuclear genome size of Cannabis sativa
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Species Genome size (diploid) (Mbp)
__________________________________________________
Arabidopsis thaliana 260
Cannabis sativa L.
Female 1636 (7.2)
Male 1683 (13.9)
__________________________________________________
Each value (•}/-S.D.) is the mean of results from six measurements.
It seems that males have a bigger Chromosome, what that means is up for discussion, but I find it interesting.
-SamS
Koichi Sakamoto, Yukio Akiyama, Kiichi Fukui, Hiroshi Kamada and Shinobu Satoh
https://www.jstage.jst.go.jp/article/cytologia1929/63/4/63_4_459/_pdf/-char/en
the diploid genome sizes in female and male plants of C. sativa are estimated to be 1636•}7.2 (S.D.) and 1683•}13.9 (S.D.) Mbp, respectively (Table 1).
Female and male C. sativa have XX and XY chromosomes with 18 autosomes, respectively.
Condensation patterns were observed in the Giemsa-stained female and male C. sativa chromosomes at the pro-metaphase stage (Figs. 2A, 2B). The Y chromosome, the largest chromosome, is
subtelocentric and has a large long arm with a satellite in the terminal of its short arm. The X chromosome was found to be submetacentric with a short satellite at the end of the short arm.
Table 1. Nuclear genome size of Cannabis sativa
__________________________________________________
Species Genome size (diploid) (Mbp)
__________________________________________________
Arabidopsis thaliana 260
Cannabis sativa L.
Female 1636 (7.2)
Male 1683 (13.9)
__________________________________________________
Each value (•}/-S.D.) is the mean of results from six measurements.
It seems that males have a bigger Chromosome, what that means is up for discussion, but I find it interesting.
-SamS