Effects of Relative Humidity, Oxygen, and Carbon Dioxide on Initiation and Early Development of Stolons and Tubers

Cary, John W. (1986) Effects of Relative Humidity, Oxygen, and Carbon Dioxide on Initiation and Early Development of Stolons and Tubers. American Potato Journal. 63:619-628.

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Abstract

Russet Burbank potatoes were grown in the greenhouse to explore the
effects of soil O2, CO2 , and relative humidity on tuberization. The composition
of the gas phase surrounding the below ground stem and stolons was
controlled at various levels. Prolonged levels of CO2 greater than 5% produced
large lenticels and, in combination with high relative humidity
suppressed the number of stolons. Oxygen levels of 5% or less in prolonged
contact with the stolons and underground portion of the stem were favorable
to stem decay by pathogens but did not affect lenticel size. Isolating the
stolons in a low relative humidity environment delayed tuber set, but
increased the number of tubers per plant. This effect of low humidity
suggests that the onset of tuberization involves at least two inductive factors,
one of which is not translocated among stolons.

Item Type:	Article
NWISRL Publication Number:	0593
Subjects:	Mass Import - unclassified
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:52
Last Modified:	13 Jan 2017 19:14
Item ID:	471
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/471