Radicle water uptake

Fig. 4.2. The time course of water uptake by seeds of Vida faba (a) immersed in water (c) on sintered glass plates at 0 cm (o) and 200 cm ( ) tension exposed to the atmosphere (b) as (c) but with the plates protected from evaporation. Arrows on (a) and (b) represent the period over which radicles emerge. After Harper and Benton, 1966 [25]...

A developing embryo produces ABA, which incepts and maintains mature seed dormancy. Germination begins with the uptake of water by imbibition of the dry seed and is followed by embryo expansion. Usually, it is considered complete when the radicle is through all the covering layers. There is still controversy whether... 

Fig. 5.3. (A) Changes in water content and oxygen uptake (arbitrary units) during the first 48 h after imbibition by peanut axes. —a fresh weight, — oxygen uptake. After Wilson and Bonner, 1971 [141]. (B) Time course of respiration of non-dormant grains of Avenafatua. Arrow indicates approximate time of radicle emergence. After Chen and Varner, 1970 [29]...

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