Potato Tuber Formation Research Articles

AN EFFECT OF NITROGEN ON THE FORMATION OF POTATO TUBERS AND THE INCIDENCE OF COMMON SCAB (STREPTOMYCES SCABIES)

Plant PathologyVolume 15, Issue 1 p. 9-14 AN EFFECT OF NITROGEN ON THE FORMATION OF POTATO TUBERS AND THE INCIDENCE OF COMMON SCAB (STREPTOMYCES SCABIES) D. H. Lapwood, D. H. Lapwood Rothamsted Experimental Station, Harpenden, Herts.Search for more papers by this authorP. W. Dyson, P. W. Dyson Rothamsted Experimental Station, Harpenden, Herts. Now at School of Agriculture, Bedford Road, Aberdeen.Search for more papers by this author D. H. Lapwood, D. H. Lapwood Rothamsted Experimental Station, Harpenden, Herts.Search for more papers by this authorP. W. Dyson, P. W. Dyson Rothamsted Experimental Station, Harpenden, Herts. Now at School of Agriculture, Bedford Road, Aberdeen.Search for more papers by this author First published: March 1966 https://doi.org/10.1111/j.1365-3059.1966.tb00313.xCitations: 22 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Citing Literature Volume15, Issue1March 1966Pages 9-14 RelatedInformation

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

In cultures with tubers which had not formed sprouts during storage the number of daughter tubers was increased in presence of 55 µg vitamin B1 and the weight of daughter tubers was increased in presence of 19 µg vitamin B1. The formation of daughter tubers was delayed for some weeks in presence of 75 µg vitamin B1. In cultures with tubers which had been kept for 2 months in the dark at room temperature and which were desprouted, the number of daughter tubers was substantially increased in presence of 49 and of 180 µg vitamin B1. The number of tubers was greatly reduced by large amounts of vitamin B1.

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

On the physiology of tuber formation in potatoes

Physiological and morphological studies on potato plants : Part 10. On the physiological behavior of ascorbic acid in the formation of potato tubers

This investigation is one of a series of experiments carried out under the title of physiological studies on potato plants. It has long been known that potato tubers are an important source for the supply of ascorbic acid (Vitamin C) as a dietary essential for human nutrition. Although a great number of studies on the ascorbic acid contents in potato tubers [graph] have recently been reported by many investigators, few data concerning the influence of ascorbic acid on the tuberization and maturity of the potato tubers, especially on the accumulation of starch in the new tubers, are available. In the present investigation, in extending the work on the carbohydrate metabolism of potato tubers, particular attention was given to a study on the physiological interrelationship between the accumulation of starch and the variation of ascorbic acid content in the potato tuber during the time of its development. The analysis was carried out on the following fractions, namely, total ascorbic acid, reduced ascorbic acid, oxidized ascorbic acid, reducing sugar, non-reducing sugar, and starch during the period from late May to the beginning of August. The experimental results obtained may be summarized as follows: (1) The ascorbic acid metabolism during the stolon elongation stage. The stolon arises in the axis of underground main stem soon after the germination. The total ascorbic acid and the reducing sugar contents in the stolon increase with the development of the stolon. At this stage, however, the amount of ascorbic acid, especially in the reduced form, in the stolon tips was less than that of the following stage ; the decline of the ratio of reduced form/oxidized form of ascorbic acid may be pointed out as a characteristic feature at this stage. (2) The ascorbic acid metabolism during the tuberization stage. The duration of this stage is very short, from the middle of June to late in June. The tips of the stolons began to swell into a spindle shape as soon as the elongation ceased and then gradually became tuberous through the deposition of starch in them. As a characteristic feature at this stage a conspicuous increase of ascorbic acid content and a decrease of reducing sugar content in the stolon tips were recognized. When reviewing the works of PURR (1934), HANES (1935) and NISHIDA (1951) which state that the ascorbic acid is very effective for inhibiting amylase activity it is very interesting to assume that the ascorbic acid in the potato tubers may act as an activator in the formation of starch in the stolon tips. In the previous paper, the authors have reported the fact that the amylase activity declined rapidly with the development of new tuber. This experimental evidence reported by the author added confirmatory support to the previous assumption of inhibitory effect of the ascorbic acid upon the amylase activity. At any rate, a close relationship between the accumulation of starch and the increase of the ascorbic acid content in the new tubers is supposed to exist. (3) The ascorbic acid metabolism during the tuber maturing stage. When the tubers attained maturity the leaves gradually died, and the onset of ripening of the new tubers roughly coincided with the yellowing and drying up of the vines. With the increasing maturity of the tuber the rate of increase of the ascorbic acid content in the new tuber slackend gradually. With respect to the detailed ratio of the constituents of ascorbic acid, an increase of the reduced form and a decrease of the oxidized form were recognized. Accordingly the ratio of reduced form/oxidized form of ascorbic acid also rose. Concomitant with these changes of the ascorbic acid content according to the tuber maturity, the starch content in the new tuber increased steeply.

Fundamental Study of Root Tuber Formation in Sweet Potatoes.

Fundamental Study of Root Tuber Formation in Sweet Potatoes.

Fundamental Study of Root Tuber Formation in Sweet Potatoes.

Fundamental Study of Root Tuber Formation in Sweet Potatoes.

Physiological Behavior of Enzymes and Carbohydrate Transformations in After-Ripening of the Potato Tuber

Previous articleNext article FreePhysiological Behavior of Enzymes and Carbohydrate Transformations in After-Ripening of the Potato TuberCharles O. ApplemanCharles O. Appleman Search for more articles by this author PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by Volume 52, Number 4Oct., 1911 Article DOIhttps://doi.org/10.1086/330637 Views: 167Total views on this site Citations: 4Citations are reported from Crossref Journal History This article was published in the Botanical Gazette (1876-1991), which is continued by International Journal of Plant Sciences (1992-present). PDF download Crossref reports the following articles citing this article:B. Samotus, M. Niedźwiedź, Z. Kolodziej, M. Leja, B. Czajkowska Storage and reconditioning of tubers of Polish potato varieties and strains. 1. influence of storage temperature on sugar level in potato tubers of different varieties and strains, Potato Research 17, no.11 (Mar 1974): 64–81.https://doi.org/10.1007/BF02361870Howard W. Hruschka, Wilson L. Smith, James E. Baker Reducing chilling injury of potatoes by intermittent warming, American Potato Journal 46, no.22 (Feb 1969): 38–53.https://doi.org/10.1007/BF02868692D. A. van Schreven On the physiology of tuber formation in potatoes, Plant and Soil 8, no.11 (Aug 1956): 56–74.https://doi.org/10.1007/BF01394196 Sophia Eckerson A Physiological and Chemical Study of After-Ripening, Botanical Gazette 55, no.44 (Sep 2015): 286–299.https://doi.org/10.1086/331050