Abstract
The objective of the present study was to characterize various traits associated with nitrogen uptake and utilization in a range of potato cultivars. For this purpose an in vitro test system was developed which allows analyzing specific stress responses in a highly con-trolled environment. Shoot tips were grown fixed in perforated stainless steel plates in 500 ml glass vessels in liquid culture medium at four nitrogen levels, i.e. 60, 30, 15 and 7.5 mmol L-1. At the end of a three weeks’ culture period plant developmental traits were determined and nitrogen uptake and assimilation were analyzed. Reduction of nitrogen in the culture medium differentially affected morphological and physiological features. Highly significant differences were found between different N-levels and cultivars as well as for genotype x nitrogen level interactions. Three groups of cultivars (high, low and intermediate) were distinguished with respect to biomass production and crude protein yield under nitrogen-sufficient conditions of 60 mmol L-1. Genotypes with a low biomass production at full nitrogen availability responded with increased root development under nitrogen deficiency stress and increased their nitrogen utilization capacity in relation to the other cultivars.
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Claims 6
Claim · model-written summary
Nitrogen reduction differentially affected potato morphological and physiological features.
- Treatment
- Reduction of nitrogene0
- Outcome
- morphological and physiological featurese0
- Direction
- differentially affectede0
Not reportedTaxonComparator
Verbatim
e0“Reduction of nitrogen in the culture medium differentially affected morphological and physiological features.”
Claim · model-written summary
Potato cultivars and nitrogen levels differed significantly, including their interaction.
- Taxon
- potato
Solanum tuberosumt0 - Outcome
- differencese0
- Qualifier
- genotype x nitrogen level interactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highly significant differences were found between different N-levels and cultivars as well as for genotype x nitrogen level interactions.”
t0“potato”
Claim · model-written summary
Three cultivar groups differed in biomass production under nitrogen-sufficient conditions.
- Taxon
- potatoSolanum tuberosumt0
- Material
- cultivarse0
- Outcome
- biomass productione0
- Qualifier
- nitrogen-sufficient conditions of 60 mmol L-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three groups of cultivars (high, low and intermediate) were distinguished with respect to biomass production and crude protein yield under nitrogen-sufficient conditions of 60 mmol L-1.”
t0“potato”
Claim · model-written summary
Three cultivar groups differed in crude protein yield under nitrogen-sufficient conditions.
- Taxon
- potatoSolanum tuberosumt0
- Material
- cultivarse0
- Outcome
- crude protein yielde0
- Qualifier
- nitrogen-sufficient conditions of 60 mmol L-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three groups of cultivars (high, low and intermediate) were distinguished with respect to biomass production and crude protein yield under nitrogen-sufficient conditions of 60 mmol L-1.”
t0“potato”
Claim · model-written summary
Low biomass genotypes increased root development under nitrogen deficiency stress.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Genotypes with a low biomass productione0
- Treatment
- nitrogen deficiency stresse0
- Outcome
- root developmente0
- Direction
- increasede0
- Comparator
- full nitrogen availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes with a low biomass production at full nitrogen availability responded with increased root development under nitrogen deficiency stress and increased their nitrogen utilization capacity in relation to the other cultivars.”
t0“potato”
Claim · model-written summary
Low biomass genotypes increased nitrogen utilization capacity relative to other cultivars under nitrogen deficiency.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Genotypes with a low biomass productione0
- Treatment
- nitrogen deficiency stresse0
- Outcome
- nitrogen utilization capacitye0
- Direction
- increasede0
- Comparator
- the other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypes with a low biomass production at full nitrogen availability responded with increased root development under nitrogen deficiency stress and increased their nitrogen utilization capacity in relation to the other cultivars.”
t0“potato”
The same questions in other papers
nitrogen · growth · Solanum tuberosum (potato)Positive and negative results
12 papers in the same direction as this paper · 38 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
47 papers more in this group
See all 51 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.