Abstract
Few experiments have studied how seeding rates affect agronomic performance and end‐use quality of modern wheat ( Triticum aestivum L.) genotypes in the Great Plains. Higher grain yield and better quality grain production requires the use of appropriate seeding rates. During the 1997 and 1998 crop seasons, 20 winter wheat genotypes and experimental lines were evaluated at two locations (four environments) to assess seeding rate and genotype effects on agronomic performance and end‐use quality of wheat. Significant differences among environments, seeding rates, and genotypes, and some of their interactions were identified. Lower seeding rates decreased plant population (by 62.3%), grain yield (by 0.8 Mg ha −1 ), kernel weight (by 1.3 mg kernel −1 ), flour yield (by 0.8 g/100 g grain), mixing time (by 0.7 min), caused later flowering (by 2 d), and increased flour protein content (by 15 mg g −1 ) and mixing tolerance (1 unit). Environment × genotype interactions were significant for all the traits except plant population and mixing tolerance. On the basis of the four environments, the seeding rate × genotype interactions were nonsignificant for all traits except plant height. These results provide evidence that agronomic performance and end‐use quality traits are greatly influenced by the environmental conditions and less so by seeding rates. Seeding rate affected plant population, days to flowering, plant height, grain yield, kernel weight, flour yield, flour protein, and mixing time and tolerance of wheat; therefore, seeding rate should be considered as a factor in obtaining higher grain yields with good end‐use quality.
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Claims 13
Claim · model-written summary
Lower seeding rates reduced wheat plant population by 62.3%.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- Lower seeding ratese0
- Outcome
- plant populatione0
- Direction
- decreasede0
- Value
- 62.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower seeding rates decreased plant population (by 62.3%)”
t0“Winter Wheat”
Claim · model-written summary
Lower seeding rates reduced grain yield by 0.8 Mg ha −1.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- grain yielde0
- Direction
- decreaseinferrede0
- Value
- 0.8 Mg ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield (by 0.8 Mg ha −1 )”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Lower seeding rates reduced kernel weight by 1.3 mg kernel −1.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- kernel weighte0
- Direction
- decreaseinferrede0
- Value
- 1.3 mg kernel −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kernel weight (by 1.3 mg kernel −1 )”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Lower seeding rates reduced flour yield by 0.8 g/100 g grain.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- flour yielde0
- Direction
- decreaseinferrede0
- Value
- 0.8 g/100 g graine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flour yield (by 0.8 g/100 g grain)”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Lower seeding rates reduced mixing time by 0.7 min.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- mixing timee0
- Direction
- decreaseinferrede0
- Value
- 0.7 mine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mixing time (by 0.7 min)”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Lower seeding rates delayed flowering by 2 d.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- floweringe0
- Direction
- latere0
- Value
- 2 de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“caused later flowering (by 2 d)”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Lower seeding rates increased flour protein content by 15 mg g −1.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- flour protein contente0
- Direction
- increasede0
- Value
- 15 mg g −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased flour protein content (by 15 mg g −1 )”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Lower seeding rates increased mixing tolerance by 1 unit.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Lower seeding ratese1
- Outcome
- mixing tolerancee0
- Direction
- increaseinferrede0
- Value
- 1 unite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mixing tolerance (1 unit)”
t0“Winter Wheat”
e1“Lower seeding rates decreased plant population (by 62.3%)”
Claim · model-written summary
Environment by genotype interactions were significant for all traits except plant population and mixing tolerance.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- all the traits except plant population and mixing tolerancee0
- Setting
- Environmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Environment × genotype interactions were significant for all the traits except plant population and mixing tolerance”
t0“Winter Wheat”
Claim · model-written summary
Seeding rate by genotype interactions were nonsignificant for all traits except plant height.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- seeding ratee0
- Outcome
- all traits except plant heighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seeding rate × genotype interactions were nonsignificant for all traits except plant height”
t0“Winter Wheat”
Claim · model-written summary
Seeding rate by genotype interaction was significant for plant height.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- seeding ratee1
- Outcome
- plant heighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nonsignificant for all traits except plant height”
t0“Winter Wheat”
e1“the seeding rate × genotype interactions were nonsignificant for all traits except plant height”
Claim · model-written summary
Environmental conditions influenced agronomic performance and end-use quality more than seeding rates.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- agronomic performance and end‐use quality traitse0
- Comparator
- seeding ratese0
- Setting
- environmental conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic performance and end‐use quality traits are greatly influenced by the environmental conditions and less so by seeding rates”
t0“Winter Wheat”
Claim · model-written summary
Seeding rate should be considered to obtain higher grain yields with good end-use quality.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- obtaining higher grain yields with good end‐use qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeding rate should be considered as a factor in obtaining higher grain yields with good end‐use quality”
t0“Winter Wheat”
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