CHEMICAL RELATIONSHIP BETWEEN SCION AND STOCK IN CITRUS

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Abstract
Some differences in inorganic composition between scion and stock of Citrus were studied. It was found that the soluble Mg as a percentage either of the dry matter or of the soluble ash of the trunk bark is lowest in the lemon and sour orange and highest in the sweet orange and grapefruit. The values found in the bark of the stock vary according to the scion variety with which it is combined. If the scion is lemon, which normally has a low value, and the stock is sweet orange or grapefruit, the values for the stocks are much lower than they would be if they had not been budded; if sweet orange or grapefruit ((with a higher value than the lemon) is growing on the sour orange, then the value of the latter is considerably higher than it would be if the lemon were the scion.