Abstract
Abstract Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants. The objective of this research was to determine the effect of salinity applied at different stages of the life cycle of wheat plants supplied with either NH 4 or NO 3 on growth, yield, and translocation of photosynthates. Plants were grown in sand culture irrigated with nutrient solution until maturity. The nutrient solution contained 4 m M N, either as (NH 4 ) 2 SO 4 or Ca(NO 3 ) 2 . Salinity (60 m M NaCl) was applied to the nutrient solution at 19, 70, and 92 d after sowing. Some of the plants received 14 CO 2 pulses 100 d after sowing, and 14 C distribution in each plant part was determined 24 h later. Dry biomass production and grain yield were reduced when salinity was applied 19 d after sowing (beginning of the vegetative stage), whereas no effect of NaCl was observed when salinity was applied later. Ammonium‐fed plants always produced more tillers and spikes than NO 3 ‐fed plants. Total grain yield was similar with plants growing in either N form. Nitrate‐treated plants produced fewer, but heavier, spikes due to a larger number of grains per spike than NH 4 ‐fed plants. Ammonium‐fed plants showed a preferential allocation of 14 C‐assimilates to young developing tillers. Nitrate‐fed plants, under similar conditions, allocated assimilates preferentially to grain. Salinity enhanced translocation of assimilates to the spikes when plants were grown with NO 3 .
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Claims 10
Claim · model-written summary
Salinity applied 19 d after sowing reduced dry biomass production of wheat.
- Taxon
- Triticum aestivum
Triticum aestivume0 - Treatment
- salinity was applied 19 d after sowinge1
- Outcome
- Dry biomass productione1
- Direction
- reducede1
- Comparator
- salinity was applied latere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e1“Dry biomass production and grain yield were reduced when salinity was applied 19 d after sowing”
e2“no effect of NaCl was observed when salinity was applied later”
Claim · model-written summary
Salinity applied 19 d after sowing reduced wheat grain yield.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- salinity was applied 19 d after sowinge1
- Outcome
- grain yielde1
- Direction
- reducede1
- Comparator
- salinity was applied latere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e1“Dry biomass production and grain yield were reduced when salinity was applied 19 d after sowing”
e2“no effect of NaCl was observed when salinity was applied later”
Claim · model-written summary
Salinity applied later than 19 d after sowing had no effect on wheat.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- salinity was applied latere2
- Direction
- no effecte2
Not reportedComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e2“no effect of NaCl was observed when salinity was applied later”
Claim · model-written summary
Ammonium-fed wheat plants produced more tillers and spikes than nitrate-fed plants.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- Ammonium‐fede3
- Outcome
- tillers and spikese3
- Direction
- moree3
- Comparator
- NO 3 ‐fed plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e3“Ammonium‐fed plants always produced more tillers and spikes than NO 3 ‐fed plants”
Claim · model-written summary
Nitrate-treated wheat plants produced fewer spikes than ammonium-fed plants.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- Nitrate‐treatede5
- Outcome
- spikese5
- Direction
- fewere5
- Comparator
- NH 4 ‐fed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e5“Nitrate‐treated plants produced fewer, but heavier, spikes due to a larger number of grains per spike than NH 4 ‐fed plants”
Claim · model-written summary
Nitrate-treated wheat plants produced heavier spikes than ammonium-fed plants.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- Nitrate‐treatede5
- Outcome
- spikese5
- Direction
- heaviere5
- Comparator
- NH 4 ‐fed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e5“Nitrate‐treated plants produced fewer, but heavier, spikes due to a larger number of grains per spike than NH 4 ‐fed plants”
Claim · model-written summary
Nitrate-treated wheat plants had a larger number of grains per spike than ammonium-fed plants.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- Nitrate‐treatede5
- Outcome
- grains per spikee5
- Direction
- largere5
- Comparator
- NH 4 ‐fed plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e5“Nitrate‐treated plants produced fewer, but heavier, spikes due to a larger number of grains per spike than NH 4 ‐fed plants”
Claim · model-written summary
Ammonium-fed wheat plants preferentially allocated 14C-assimilates to young developing tillers.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- Ammonium‐fede6
- Outcome
- preferential allocatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e6“Ammonium‐fed plants showed a preferential allocation of 14 C‐assimilates to young developing tillers”
Claim · model-written summary
Nitrate-fed wheat plants allocated assimilates preferentially to grain.
- Taxon
- Triticum aestivumTriticum aestivume0
- Organ / stage
- graine7
- Treatment
- Nitrate‐fede7
- Outcome
- allocated assimilatese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e7“Nitrate‐fed plants, under similar conditions, allocated assimilates preferentially to grain. Salinity enhanced translocation of assimilates to the spikes when plants were grown with NO 3”
Claim · model-written summary
Salinity enhanced translocation of assimilates to wheat spikes when plants were grown with nitrate.
- Taxon
- Triticum aestivumTriticum aestivume0
- Treatment
- Salinitye7
- Outcome
- translocation of assimilates to the spikese7
- Direction
- enhancede7
- Qualifier
- when plants were grown with NO 3e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat ( Triticum aestivum L.) growth is affected by both salinity and the type of N fed to the plants”
e7“Nitrate‐fed plants, under similar conditions, allocated assimilates preferentially to grain. Salinity enhanced translocation of assimilates to the spikes when plants were grown with NO 3”
The same questions in other papers
salinity · yield · Triticum aestivum (wheat)Positive and negative results
196 papers in the same direction as this paper · 30 in the opposite direction
- negative
- positive
- positive
223 papers more in this group
See all 227 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.