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Figg. 1/4 - l ) Bra.uica macrocatpa Gu". 'eed at the fiN developmental stage. Globular embryo shows diffuse particulate
esterase activity. 2-3) Sced at the second developmental stage. Phenol deposition (a...teri,kJ '>tarts in the internai endo;perm lay-
er (Fig. 2) and proceed<, outwards. emelopìng the embryo !Fig. 3). 0\ule integument (t). 4) Earl) third stage of development.
Tangential section of integument celh with pho,phata'e acti' ity.
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