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The role of roots in sex expression in hemp plants

โœ Scribed by M. Kh. Chailakhyan; V. N. Khryanin

Publisher
Springer-Verlag
Year
1978
Tongue
English
Weight
682 KB
Volume
138
Category
Article
ISSN
0032-0935

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โœฆ Synopsis

When the shoots of young hemp (Cannabis sativa L.) plants were cut off the roots, cultured as cuttings, and regenerating (adventitious) roots were removed as soon as appearing, ca. 80-90% of the plants became male (had staminate flowers) whereas if the roots were allowed to develop a similar percentage became female (pistillate flowers). Treatment of de-rooted cuttings with 6-benzylaminopurine (15 mg/l) restored the percent of female plants to ca. 80. It is suggested that the root system plays an essential role in sex expression in hemp and that this role is related to cytokinin synthesis in the root.

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W h e n shoots o f y o u n g plants o f h e m p (Cannabis sativa L.) a n d spinach (Spinacea oleracea L.) were cultured as cuttings and allowed to regenerate adventitious roots, ca, 8 0 -8 5 % became female (formed pistillate flowers) regardless of whether the leaves were left on the plants or were