Factors affecting the protein content and protein yield in potato tubers

Anna Wierzbicka

a.wierzbicka@ihar.edu.pl
Instytut Hodowli i Aklimatyzacji Roślin — Państwowy Instytut Badawczy, Zakład Agronomii Ziemniaka, Oddział Jadwisin (Poland)

Cezary Trawczyński


Instytut Hodowli i Aklimatyzacji Roślin — Państwowy Instytut Badawczy, Zakład Agronomii Ziemniaka, Oddział Jadwisin (Poland)

Abstract

The aim of this study was to assess changes in total protein content and its yield in potato tubers, depending on nitrogen fertilization, variety, weather conditions, the dry matter and starch content in tubers. Nitrogen fertilization significantly caused significant increase of the protein content and yield. In the range of recommended doses of nitrogen in potato (100–140 kg∙ha-1) protein content was 1,85–1,95;1,72–1,80;1,61–1,68, respectively for early, medium early and late as well as starch varieties. Protein yield depended mainly on the dry matter yield of the tubers. The highest protein yield (over 900 kg∙ha-1) was achieved by edible cultivar Marlen and two starch cultivars Kuras and Pokusa. We detected a significant negative linear relationship between: protein content and starch content, protein content and dry matter content and a positive correlation between protein yield and dry matter yield of the tubers. Growing season with large amounts of rainfall (2010) reduced the total protein content in comparison with the more arid periods (2006, 2008).


Keywords:

nitrogen fertilization, potato, protein yield, total protein content

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Published
2012-12-31

Cited by

Wierzbicka, A. and Trawczyński, C. (2012) “Factors affecting the protein content and protein yield in potato tubers”, Bulletin of Plant Breeding and Acclimatization Institute, (266), pp. 181–190. doi: 10.37317/biul-2012-0018.

Authors

Anna Wierzbicka 
a.wierzbicka@ihar.edu.pl
Instytut Hodowli i Aklimatyzacji Roślin — Państwowy Instytut Badawczy, Zakład Agronomii Ziemniaka, Oddział Jadwisin Poland

Authors

Cezary Trawczyński 

Instytut Hodowli i Aklimatyzacji Roślin — Państwowy Instytut Badawczy, Zakład Agronomii Ziemniaka, Oddział Jadwisin Poland

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