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STUDIES IN THE VARIETAL IMMUNITY OF POTATOES TO WART DISEASE (SYNCHYTRIUM ENDOBIOTICUM SCHILB., PERC.)
Author(s) -
ROACH W. A.
Publication year - 1923
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1923.tb05661.x
Subject(s) - biology , immune system , immunity , botany , horticulture , immunology
Summary.1 Grafting experiments of a preliminary nature have been carried out to throw light on the functions of the various organs of the potato plant in rendering the tubers immune or susceptible to Wart Disease ( Synchytrium endobioticum Schilb., Perc). 2 It is hoped that such knowledge may facilitate a biochemical study of the problem by indicating which part of the plant to investigate first, and to give some clue to the general nature of the chemical differences to be sought. 3 Composite plants were built up by grafting in the following ways: 3 plants of the type Immune grafted on Immune. 3 plants of the type Susceptible grafted on Immune 4 plants of the type Immune grafted on Immune Susceptible. 2 plants of the type Susceptible grafted on Immune 4 The results are in harmony with the conclusion that the character of the foliage has no influence on the immunity or the susceptibility of the tubers to Wart Disease. 5 It follows that no compound synthetised in the leaves is likely to be responsible for separating potatoes into “immunes” and “suscep‐tibles.” 6 The investigation is being continued, and it is hoped to determine whether any one part of the plant influences the immunity or susceptibility to the disease of any other part. The desirability of investigating a portion possessing such an influence is obvious. If the several parts of the plant have no such effect on each other, a search for differences in substances, such as the proteins, which are only translocated with difficulty, if at all, would be indicated.