Acta Botanica Sinica Volume 31 Issue 2, Pages .
Cytochemieal Observation on Garlic Clove before and after Temperature-Modulated Break of Dormancy

Shao Li-mei, Yin Wei-yi, Li Xian-zhang and Lou Cheng-hou

Usually, garlic clove keeps itself in dormancy during summer months and tends to break their dormancy as the climate becomes cooler toward autumn. Prolonged storage of garlic clove under relatively high temperature is a good measure taken in practics to retain its dormancy and refrain from sprouting. In fact, if garlic is stored around 30 ¡æ, its dormancy can be extended to more than six months while its exposure to low temperature (4 ¡æ) for a short duration will eventualy break its dormancy. The Dormant release can be diagnosed in the upper epidermis by signs of nuclear disintegration and appearance of APase, ATPase and POase activities. The nuclei in dormant epidermal cells keep their characteristic round shape and in the central position of the cells which are devoid of the enzyme activities mentioned. In case the clove is kept in 30¡æ over a year, partial disintegration of the cells evacuation of the constituents also take place, as clearly shown by numerous proteinaceous granules suspended in the interior and by ¡°nuclear extrusion¡± across the intercellular boundary.

Garlic; Dormancy; Redistribution of assimilates; Physiological effect of Temperature



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