Effects of various treatments on the carbon dioxide and oxygen in dormant potato tubers

Smith, O

Effects of various treatments on the carbon dioxide and oxygen in dormant potato tubers

Author

Ora Smith

Author Affiliations

Ora Smith was Graduate Assistant in Truck Crops; resigned August 1, 1929.

Publication Information

Hilgardia 4(11):273-306. DOI:10.3733/hilg.v04n11p273. December 1929.

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Abstract

Abstract does not appear. First page follows.

General Problem and Literature

The marked influence of environmental conditions and treatments upon the length of the rest period of plants or plant parts is well known. Numerous investigations upon methods of abbreviating this rest period and hastening the initiation of growth have, however, failed to show convincingly the reason for the inception of this growth. Most of the previous investigations have been concerned with the changes in food reserves and enzyme activity. The present experiments deal primarily with the gaseous changes accompanying treatments which alter the rest period.

The literature of the subject frequently indicates that various outer tissues of seeds and tubers prolong the rest period by retarding the passage of carbon dioxide and oxygen. Several investigations with seeds (Crocker;⁽⁹⁾ Shull;⁽²⁶⁾, ⁽²⁷⁾, ⁽²⁸⁾ Becker;⁽⁶⁾ Frietinger⁽¹³⁾) have shown that the permeability of the outer layer to gases plays an important rôle in the length of the rest period.

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