Abstract
Taking different cotton cultivars with different maturity stage as test materials,a field experiment of two sowing dates and three N application rates was conducted in the lower reaches of Yangtze River basin(Nanjing and Huai'an) and Yellow River basin(Xuzhou and Anyang),with the effects of cultivar,main meteorological conditions,and N application rate on the cottonseed protein and oil contents analyzed,aimed to understand the quantitative relations of cottonseed protein and oil contents with environmental factors.Besides cotton cultivar,the major factors affecting the cottonseed protein and oil contents were in the sequence of the mean air temperature at bolling stage,solar radiation,and N application rate.The optimum mean air temperature for the production of cottonseed protein and oil at bolling stage was 26.1 ℃ and 25.7 ℃,respectively.Sufficient illumination did not favor the enhancement of cottonseed protein and oil contents.Increasing N application rate increased the cottonseed protein content but decreased the cottonseed oil content.Based on the statistical analyses,an ecological model for predicting cottonseed protein and oil contents was established,taking cultivar,mean air temperature and solar radiation at bolling stage,and N application rate as the input parameters,being easy to be operated.The root mean square error(RMSE) of the prediction of cottonseed protein content and oil content by the model was 2.03% and 2.54%,respectively,showing a good predictability of the model.
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Claims 8
Claim · model-written summary
Mean air temperature at bolling stage was the leading factor after cultivar for cottonseed protein and oil, followed by solar radiation and nitrogen rate.
- Taxon
- cotton
Gossypium hirsutume0 - Organ / stage
- cottonseede0
- Outcome
- cottonseed protein and oil contentse0
- Setting
- mean air temperature at bolling stagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Besides cotton cultivar,the major factors affecting the cottonseed protein and oil contents were in the sequence of the mean air temperature at bolling stage,solar radiation,and N application rate”
Claim · model-written summary
The optimum bolling-stage temperature for cottonseed protein production was 26.1 ℃.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- production of cottonseed proteine0
- Direction
- optimume0
- Value
- 26.1 ℃e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum mean air temperature for the production of cottonseed protein and oil at bolling stage was 26.1 ℃ and 25.7 ℃,respectively”
Claim · model-written summary
The optimum bolling-stage temperature for cottonseed oil production was 25.7 ℃.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- cottonseed protein and oile0
- Direction
- optimume0
- Value
- 25.7 ℃e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum mean air temperature for the production of cottonseed protein and oil at bolling stage was 26.1 ℃ and 25.7 ℃,respectively”
Claim · model-written summary
Sufficient illumination did not favor higher cottonseed protein and oil contents.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- cottonseed protein and oil contentse0
- Direction
- did not favor the enhancemente0
- Setting
- Sufficient illuminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sufficient illumination did not favor the enhancement of cottonseed protein and oil contents”
Claim · model-written summary
Increasing nitrogen rate raised cottonseed protein content.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Increasing N application ratee0
- Outcome
- cottonseed protein contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing N application rate increased the cottonseed protein content but decreased the cottonseed oil content”
Claim · model-written summary
Increasing nitrogen rate lowered cottonseed oil content.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Increasing N application ratee0
- Outcome
- cottonseed oil contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing N application rate increased the cottonseed protein content but decreased the cottonseed oil content”
Claim · model-written summary
The model predicted cottonseed protein with an RMSE of 2.03%.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- prediction of cottonseed protein contente0
- Value
- 2.03%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root mean square error(RMSE) of the prediction of cottonseed protein content and oil content by the model was 2.03% and 2.54%,respectively”
Claim · model-written summary
The model predicted cottonseed oil with an RMSE of 2.54%.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- oil contente0
- Value
- 2.54%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root mean square error(RMSE) of the prediction of cottonseed protein content and oil content by the model was 2.03% and 2.54%,respectively”
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