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Non-deep simple morphophysiological dormancy in seeds of heavenly bamboo (Nandina domestica Thunb.)

•Seeds of heavenly bamboo could be categorized in non-deep simple morphophysiological dormancy.•Heavenly bamboo seed did not require cold stratification, but warm stratification at 20°C could break seed dormancy effectively.•100 and 1000mgL−1 GA3 treatment could substitute for warm stratification fo...

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Bibliographic Details
Published in:Scientia horticulturae 2016-10, Vol.210, p.180-187
Main Authors: Rhie, Yong Ha, Kim, Jongyun, Lee, Seung Youn, Kim, Ki Sun
Format: Article
Language:English
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Summary:•Seeds of heavenly bamboo could be categorized in non-deep simple morphophysiological dormancy.•Heavenly bamboo seed did not require cold stratification, but warm stratification at 20°C could break seed dormancy effectively.•100 and 1000mgL−1 GA3 treatment could substitute for warm stratification for dormancy breaking of heavenly bamboo seeds.•Warm stratification shortened the seed germination of heavenly bamboo by 4 months compared with natural conditions. Heavenly bamboo (Nandina domestica) is a popular ornamental shrub used as an indoor plant and for landscaping. However, seed propagation has been limited due to its very slow germination (9 months under natural conditions) caused by an extended seed dormancy period. We used various temperature treatments, including simulations of seasonal temperature changes, to investigate the temperature requirements for dormancy breaking and the germination of heavenly bamboo seeds at the embryo and whole-seed levels. Heavenly bamboo seeds were found to have no physical dormancy because the seeds imbibed water readily. However, its mature seeds contained underdeveloped embryos (E:S ratio
ISSN:0304-4238
1879-1018
DOI:10.1016/j.scienta.2016.07.022