ESTIMATION OF APPLE ROOTSTOCK VIGOR BY THE ELECTRICAL RESISTANCE OF LIVING SHOOTS

1 November 1961

journal article
Published by Canadian Science Publishing in Canadian Journal of Botany

Vol. 39 (7) , 1585-1589
https://doi.org/10.1139/b61-139

Abstract

Electrical resistances of living shoots of 13 apple rootstocks varying in vigor from very dwarfing to very vigorous were measured. A portable, battery-powered Bouyoucos Model C bridge was used, equipped with needle electrode probes that completely penetrated the bark. Data obtained on shoots of the previous year's growth revealed a direct relationship between the electrical resistance of shoots and the known rootstock effect on scion vigor. Dwarfing and vigorous rootstocks had low and high electrical resistance respectively. When resistance was plotted against time there was a close resemblance to curves for daily periodicity of transpiration.

Keywords

This publication has 4 references indexed in Scilit:

NOTE ON TWO ELECTROLYTIC METHODS FOR DETERMINING FROST HARDINESS OF FRUIT TREES
Canadian Journal of Plant Science, 1960
A Wide-Range A.C. Bridge for Determining Injury and Death.
Plant Physiology, 1959
THE CONTROL OF FRUIT‐TREE BEHAVIOUR BY THE USE OF ROOTSTOCKS
Annals of Applied Biology, 1956
Multiple Range and Multiple F Tests
Published by JSTOR ,1955