Abstract
Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains and is grown primarily as either a grain‐only (GO) or a dual‐purpose (DP, grazing plus grain) crop. Traditionally, cultivars are developed in GO systems. Because of genotype × system interactions, the DP environment may compromise gains in grain yield accrued in GO‐developed cultivars. Forage traits for 24 sets of populations (each with unique pedigree) were used to test benefits of tailoring breeding programs for DP wheat. Each set came from the same F 2 source and contained a base (B) F 3 bulk population and F 5 bulk populations mass selected from the F 2 within either a GO or DP system. Forage biomass and forage total N and nitrate were measured at the start of fall grazing. Nearly always, the effect of selection environment was consistent across genetic backgrounds. Effect of selection environment on forage biomass of each nursery was significant at P = 0.09 and P = 0.07. In 2001, DP‐derived populations produced about 5% less than GO‐derived populations; in 2002, the selection effect was not significant ( P = 0.38 and 0.30). Selection environment had a significant effect on forage total N, but not nitrate levels. Total N in DP selections was slightly greater (2.5%, P < 0.05) than those from B and GO selections. Forage nitrate was affected by genetic background; mean nitrate‐N among the 24 backgrounds ranged from 1.3 to 3.1 mg g −1 in 2001 and 0.4 to 1.3 mg g −1 in 2002. Selection in the DP system appears to offer equal or slightly less fall forage biomass without greatly changing forage total N and nitrate concentrations.
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Claims 7
Claim · model-written summary
Selection environment had a significant effect on fall forage biomass of winter wheat nurseries at P = 0.09 and P = 0.07.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- selection environmente1
- Outcome
- forage biomasse1
- Qualifier
- at P = 0.09 and P = 0.07e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e1“Effect of selection environment on forage biomass of each nursery was significant at P = 0.09 and P = 0.07”
Claim · model-written summary
The selection environment effect on fall forage biomass of winter wheat was not significant in the second year.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- selection environmente1
- Outcome
- selection effecte2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e1“Effect of selection environment on forage biomass of each nursery was significant at P = 0.09 and P = 0.07”
e2“the selection effect was not significant ( P = 0.38 and 0.30)”
Claim · model-written summary
Selection environment had a significant effect on forage total N of winter wheat.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Selection environmente3
- Outcome
- forage total Ne3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e3“Selection environment had a significant effect on forage total N, but not nitrate levels”
Claim · model-written summary
Total N in dual-purpose selections was slightly greater (2.5%) than in base and grain-only selections.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- DP selectionse4
- Outcome
- Total Ne4
- Direction
- slightly greatere4
- Value
- 2.5%e4
- Qualifier
- P < 0.05e4
- Comparator
- B and GO selectionse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e4“Total N in DP selections was slightly greater (2.5%, P < 0.05) than those from B and GO selections”
Claim · model-written summary
Selection environment did not change forage nitrate levels of winter wheat.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Selection environmente3
- Outcome
- nitrate levelse3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e3“Selection environment had a significant effect on forage total N, but not nitrate levels”
Claim · model-written summary
Forage nitrate of winter wheat was affected by genetic background.
- Taxon
- winter wheatTriticum aestivume0
- Material
- genetic backgrounde5
- Outcome
- Forage nitratee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e5“Forage nitrate was affected by genetic background”
Claim · model-written summary
Selection in the dual-purpose system may offer equal or slightly less fall forage biomass without greatly changing forage total N and nitrate concentrations.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Selection in the DP systeme6
- Outcome
- fall forage biomasse6
- Direction
- equal or slightly lesse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat ( Triticum aestivum L.) is the foundation of many agricultural enterprises in the southern Great Plains”
e6“Selection in the DP system appears to offer equal or slightly less fall forage biomass without greatly changing forage total N and nitrate concentrations”
The same questions in other papers
climate site · nutrient: content · Triticum aestivum (wheat)Positive and negative results
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See all 15 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.