Journal Article

A new method for on‐line measurement of diurnal change in potato tuber growth under controlled environments

Toshihiko Eguchi

in Journal of Experimental Botany

Volume 51, issue 346, pages 961-964
Published in print May 2000 | ISSN: 0022-0957
Published online May 2000 | e-ISSN: 1460-2431 | DOI: http://dx.doi.org/10.1093/jexbot/51.346.961
A new method for on‐line measurement of diurnal change in potato tuber growth under controlled environments

Show Summary Details

Preview

An on‐line laser micrometer system was applied to measurement of diurnal change in potato (Solanum tuberosum L.) tuber growth. Diameters of the potato tuber were scanned by moving a laser micrometer along the longitudinal axis of the tuber at constant speed, and tuber volume was evaluated as an aggreg ate of thin discs. A single potato tuber, without competitive sink tubers in the plant, was grown in controlled air at 20 °C and 80% RH, and tuber volume was measured at 30 min intervals. During the growth experiment, the potato tuber increased in size without any inhibitory effect of periodical laser beam irradiation. Greatest expansion generally occurred during the early night, and transient contraction of the tuber occurred at the beginning of the light period.

Keywords: Potato; laser micrometer; tuber growth; on‐line measurement; controlled environments.

Journal Article.  1727 words.  Illustrated.

Subjects: Plant Sciences and Forestry

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.