The Effect of High Temperature during Storage on the Vigour of Potato Mother Tubers

Abstract

The aim of this work was to assess the impact of high temperature during storage and of de-sprouting before planting on the vigour of potato mother tubers of 24 potato cultivars. The study was conducted in the years 2006-2007 in the Jadwisin Branch of the Plant Breeding and Acclimatization Institute, Poland. Vigour was assessed by a field method and evaluated on a nine-point scale. It was found that mother tubers of five cultivars had maintained their growth vigour despite the high temperature in the period from autumn until the time of planting. There was no correlation between the length and mass of the emerging sprouts, plant height, mass of the above-ground part of plants, the LAI index, and the vigour of potato mother tubers. This characteristic was also not dependent on the length of the growing season of the individual cultivars.

Assessment of Potato Mother Tuber Vigour Using the Method of Accelerated Ageing

“…By means of this method it is possible to characterize one cultivar only or several cultivars at the same time. The present study reconfirmed the previous report (Rykaczewska, 2010a) that the national gene pool currently contains more potato cultivars with a slow rate of physiological ageing of tubers than it did in the 1980s (Rykaczewska, 1987a). An additional confirmation of these conclusions is provided by the results of the analysis of the length of the dormancy period of all the Polish cultivars bred in the years 1955 -1994, which shows a clear increase in the number of cultivars with a long dormancy period and a reduction in the number of cultivars with a short dormancy period (Rykaczewska, 1997c).…”

“…In a previous work (Rykaczewska, 2010a), the vigour of tubers was assessed for 24 cultivars. The length and mass of stems and leaf area index were then measured.…”

“…However, due to high labor intensity and lack of correlation of these traits with the vigour of potato tubers, these indicators are not included in the current study. Generally, the shorter length and smaller mass of the stems and the lower leaf area index seem to be typical for the plants growing from potato mother tubers that are physiologically older (Rykaczewska, 2002a(Rykaczewska, , 2002b(Rykaczewska, , 2010a.…”

“…Different vigour may also result from a potato seed of the same cultivar grown in different climatic regions (Reust, 1982). The response of individual cultivars, however, is diverse and is not closely related to the length of the dormancy period or the length of the growing season (Reust and Münster, 1975;Roztropowicz, 1985;Rykaczewska, 1993Rykaczewska, , 2010aRykaczewska, , 2010b. This means that the early cultivars are not always characterized by a rapid rate of physiological ageing of tubers, or the late cultivars by a slow rate of ageing.…”

Selection and RAPD analysis of Pseudomonas ssp. isolates able to improve biological viability of potato seed tubers

“…The length of sprouts per tuber also increased with the duration of sprouting, which matched with results obtained by GACHANGO et al (2008) andPOŠTIĆ et al (2010;. The increase of the heat accumulation, together with the duration of sprouting, have caused the formation of longer sprouts which support the results obtained earlier (GACHANGO et al, 2008;POŠTIĆ et al, 2010;RYKACZEWSKA, 2010;POŠTIĆ et al, 2012).…”