Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin, Bulletin of Plant Breeding and Acclimatization Institute, Open Access Journal
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The length of tuber dormancy period in new potato cultivars

Krystyna Zarzyńska

k.zarzynska@ihar.edu.pl
Zakład Agronomii Ziemniaka, Instytut Hodowli i Aklimatyzacji Roślin, Oddział Jadwisin (Poland)


Abstract

The investigations on duration of potato tubers dormancy were carried out in the years 1999–2002 at the Plant Breeding and Acclimatization Institute in Jadwisin. Twenty-two cultivars, including: 8 — very early and early, 9 — mid-early and 5 — mid-late and late, were tested. The length of a dormancy period was measured in days, counting from the „0” date (1st October) to sprouting of 80% of tubers. For measuring a dormancy period, a 1–9 scale, where 1 — the shortest dormancy and 9 — the longest dormancy, was used. It was found that 6 of the tested cultivars had long dormancy periods (ratings 9–7), 8 cultivars were characterized by the dormancy periods of medium length (6–4), and 8 cultivars had short periods of dormancy (3–1). No close relationship between cultivar earliness and the duration of tuber dormancy was observed. The cultivars differed in the depth of tuber dormancy, i.e. in the length of a period between sprouting of 10% and 90% of tubers in the tested sample. The influence of weather conditions in the vegetation period upon the duration of dormancy was found. The dormancy period of tubers harvested in the dry year 2002 was shorter than those of tubers harvested in the years 1999, 2000 and 2001.


Keywords:

cultivar, dormancy, earliness, potato

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Published
2004-06-30

Cited by

Zarzyńska, K. (2004) “The length of tuber dormancy period in new potato cultivars”, Bulletin of Plant Breeding and Acclimatization Institute, (232), pp. 5–14. doi: 10.37317/biul-2004-0063.

Authors

Krystyna Zarzyńska 
k.zarzynska@ihar.edu.pl
Zakład Agronomii Ziemniaka, Instytut Hodowli i Aklimatyzacji Roślin, Oddział Jadwisin Poland

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