DORMANCY IN BUDS 



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Figure 89. A, Slices of Mcintosh apple allowed to dry in air. B, Slices of 

 Mcintosh apple soaked one minute in 0.1 per cent thiourea solution and allowed 

 to dry in air. C, Brown apple juice, check lot. D, Brown apple juice decolorized 

 by adding 1 mg of thiourea per 10 cc of juice. E, Thiourea added to juice at once 

 after pressing; F, after being exposed to oxidation in air for 15 minutes before add- 

 ing thiourea; G, for one hour; H, for two hours; K, for four hours. Residual liquid 

 after decolorizing action of thiourea shows increasing amounts of an unreducible 

 pigment as duration of the preliminary oxidation was increased. 



