Abstract
Dimethyl sulfide (DMS) has been identified as the compound responsible for the characteristic aroma of cooked sweet corn (Zea mays L.) and, along with sugar and water-soluble polysaccharides, is one of the main flavor components in the kernels. Because of the close relationship between DMS and its amino acid precursor S-methylmethionine, the premise was formulated that it might be possible to improve sweet corn aroma and overall eating quality through enhanced production of DMS from increased application of N and S to the crop in the field. Studies were conducted on a Plainfield sand and a Flanagan silt loam to evaluate the effects of N and S fertilization on kernel DMS production in several commercial sh2 hybrids; in the process, the effect of N and S fertilization on various yield and yield component parameters was also determined. Hybrid was the main factor affecting kernel DMS production, although in both soils kernel DMS levels were influenced by significant interactions between hybrid and fertilizer treatments. Kernel DMS content, in response to increasing N fertilization rates, increased by an average of 85% in three of six hybrids in the Plainfield sand and by 60% in two of three hybrids in the Flanagan silt loam. The effect of S fertilization on kernel DMS production was small, with only one hybrid on the sandy soil showing a positive response (38%) to S application, and then in combination with high N rates. Irrespective of N-S fertilization regime, kernel DMS concentrations decreased at both locations by an average of ≈8.5% per day as kernel maturity increased. The results showed that kernel DMS production may be enhanced by N nutrition, independent of N fertilization effects on ear and kernel yields.
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Claims 7
Claim · model-written summary
Hybrid was the main factor in kernel DMS production.
Verbatim
e0“Hybrid was the main factor affecting kernel DMS production”
t0“Sweet Corn”
Claim · model-written summary
Hybrid and fertilizer treatment significantly interacted in their effect on kernel DMS levels in both soils.
Not reportedDirection
Verbatim
e0“in both soils kernel DMS levels were influenced by significant interactions between hybrid and fertilizer treatments.”
t0“Sweet Corn”
Claim · model-written summary
Increasing N fertilization raised kernel DMS content by 85% on average in three of six hybrids on Plainfield sand.
- Taxon
- sweet cornt0
- Treatment
- increasing N fertilization ratese0
- Outcome
- Kernel DMS contente0
- Direction
- increasede0
- Value
- 85%e0
- Qualifier
- three of six hybridse0
- Setting
- Plainfield sande0
Not reportedComparator
Verbatim
e0“Kernel DMS content, in response to increasing N fertilization rates, increased by an average of 85% in three of six hybrids in the Plainfield sand”
t0“Sweet Corn”
Claim · model-written summary
Increasing N fertilization raised kernel DMS content by 60% in two of three hybrids on Flanagan silt loam.
- Taxon
- sweet cornt0
- Treatment
- increasing N fertilization ratese1
- Outcome
- Kernel DMS contente1
- Direction
- increasede1
- Value
- 60%e0
- Qualifier
- two of three hybridse0
- Setting
- Flanagan silt loame0
Not reportedComparator
Verbatim
e0“by 60% in two of three hybrids in the Flanagan silt loam.”
t0“Sweet Corn”
e1“Kernel DMS content, in response to increasing N fertilization rates, increased”
Claim · model-written summary
S application with high N increased kernel DMS by 38% in one hybrid on sandy soil.
- Taxon
- sweet cornt0
- Treatment
- S applicatione0
- Outcome
- kernel DMS productione1
- Direction
- positive responsee0
- Value
- 38%e0
- Qualifier
- in combination with high N ratese0
- Setting
- sandy soile0
Not reportedComparator
Verbatim
e0“only one hybrid on the sandy soil showing a positive response (38%) to S application, and then in combination with high N rates.”
t0“Sweet Corn”
e1“The effect of S fertilization on kernel DMS production was small”
Claim · model-written summary
Kernel DMS concentrations declined by about 8.5% per day with greater kernel maturity at both locations.
Verbatim
e0“kernel DMS concentrations decreased at both locations by an average of ≈8.5% per day as kernel maturity increased.”
t0“Sweet Corn”
Claim · model-written summary
The authors concluded that N nutrition can enhance kernel DMS independently of N effects on ear and kernel yields.
Verbatim
e0“kernel DMS production may be enhanced by N nutrition, independent of N fertilization effects on ear and kernel yields.”
t0“Sweet Corn”
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