Temperature mediated physiological dormancy in dry bitter gourd (Momordica charantia) seeds
Results of standard viability and germination tests of two bitter gourd seed lots confirmed that storage of dry seeds at sub-zero temperatures for more than five minutes induced a secondary dormancy in the embryo. A heat treatment of dry seeds at 50°C for at least two minutes could break this dormancy. Temperature cycling showed that dormancy induction and breakage were reversible without any measurable decline in viability. As temperature treatments did not affect seed imbibition behaviour, the mechanism is not hardseededness, but a type of physiological dormancy.
Document Type: Research Article
Publication date: April 1, 2018
This article was made available online on December 14, 2017 as a Fast Track article with title: "Temperature mediated physiological dormancy in dry bitter gourd (Momordica charantia) seeds".
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