Abstract
To study the effects of supplemental lighting with ultraviolet (UV), blue and red-blue lights on quality development of grape berries under protected cultivation to promote early maturing, four-year-old vines of 'Ruidu Xiangyu' grape using 'Beta' as rootstock were used in this experiment. The results indicated that blue and ultraviolet lights were poor in greenhouse environment. Compared with the control, blue and ultraviolet lights lasting 6 hours at night significantly accele-rated the increase of berry mass, fruit diameter, sugar content and the decrease of acidity content during the grape development, but the effect of red-blue light was not obvious. At the fruit maturation, berries supplemented with the three types of light were heavier, and those treated with the UV light were the heaviest. Additionally, grape berries supplemented with blue light had the highest glucose, fructose and total sugar contents, while the sugar contents in berries supplemented with UV light was lower than that under blue light and higher than that under the red-blue light. Volatile linalool, geraniol, terpineol and nerol reached their peak contents ear-liest in berries supplemented with blue light during the developmental stage. At fruit maturation, berries supplemented with blue light had the highest linalool and citronellol contents, while those with UV light had the highest geraniol, hexanal and E-2-hexenal contents, and supplemented with red-blue light had lower linalool content than the control. Moreover, supplementary light was also beneficial for the accumulation of volatile aldehydes and ketones. In conclusion, blue supplementary light could accelerate the development of grape berries as their sugar content was highest and main terpenes reached their peak contents earliest.Grape berries supplemented with UV light had the largest single berry mass and most abundant volatile compounds, while red-blue light treatment was not so effective on quality improvement.
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Claims 16
Claim · model-written summary
Compared with the control, 6 hours of blue light at night significantly accelerated the increase of berry mass, fruit diameter and sugar content during grape development.
Verbatim
e0“Compared with the control, blue and ultraviolet lights lasting 6 hours at night significantly accele-rated the increase of berry mass, fruit diameter, sugar content and the decrease of acidity content during the grape development”
Claim · model-written summary
Compared with the control, 6 hours of blue light at night significantly accelerated the decrease of acidity content during grape development.
Verbatim
e0“Compared with the control, blue and ultraviolet lights lasting 6 hours at night significantly accele-rated the increase of berry mass, fruit diameter, sugar content and the decrease of acidity content during the grape development”
Claim · model-written summary
Compared with the control, 6 hours of ultraviolet light at night significantly accelerated the increase of berry mass, fruit diameter and sugar content during grape development.
Verbatim
e0“Compared with the control, blue and ultraviolet lights lasting 6 hours at night significantly accele-rated the increase of berry mass, fruit diameter, sugar content and the decrease of acidity content during the grape development”
Claim · model-written summary
Compared with the control, 6 hours of ultraviolet light at night significantly accelerated the decrease of acidity content during grape development.
Verbatim
e0“Compared with the control, blue and ultraviolet lights lasting 6 hours at night significantly accele-rated the increase of berry mass, fruit diameter, sugar content and the decrease of acidity content during the grape development”
Claim · model-written summary
The effect of red-blue light on grape berry development was not obvious.
Not reportedComparator
Verbatim
e0“but the effect of red-blue light was not obvious”
e1“grape development”
Claim · model-written summary
At fruit maturation, grape berries supplemented with the three types of light were heavier.
- Taxon
- grapee1
- Organ / stage
- fruit maturatione0
- Treatment
- the three types of lighte0
- Outcome
- heaviere0
- Direction
- heaviere0
Not reportedComparator
Verbatim
e0“At the fruit maturation, berries supplemented with the three types of light were heavier”
e1“grape development”
Claim · model-written summary
At fruit maturation, grape berries treated with UV light were the heaviest.
Not reportedComparator
Verbatim
e0“those treated with the UV light were the heaviest”
e1“grape development”
Claim · model-written summary
Grape berries supplemented with blue light had the highest glucose, fructose and total sugar contents.
- Taxon
- grapee0
- Treatment
- blue lighte0
- Outcome
- glucose, fructose and total sugar contentse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“grape berries supplemented with blue light had the highest glucose, fructose and total sugar contents”
Claim · model-written summary
Sugar contents in berries supplemented with UV light were lower than under blue light.
Verbatim
e0“the sugar contents in berries supplemented with UV light was lower than that under blue light”
e1“grape development”
Claim · model-written summary
Sugar contents in berries supplemented with UV light were higher than under red-blue light.
Verbatim
e0“the sugar contents in berries supplemented with UV light was lower than that under blue light and higher than that under the red-blue light”
e1“grape development”
Claim · model-written summary
Volatile linalool, geraniol, terpineol and nerol reached their peak contents earliest in berries supplemented with blue light during development.
- Taxon
- grapee1
- Treatment
- blue lighte0
- Compound
- linalool, geraniol, terpineol and nerole0
- Outcome
- peak contentse0
- Direction
- ear-lieste0
Not reportedComparator
Verbatim
e0“Volatile linalool, geraniol, terpineol and nerol reached their peak contents ear-liest in berries supplemented with blue light”
e1“grape development”
Claim · model-written summary
At fruit maturation, berries supplemented with blue light had the highest linalool and citronellol contents.
Not reportedComparator
Verbatim
e0“At fruit maturation, berries supplemented with blue light had the highest linalool and citronellol contents”
e1“grape development”
Claim · model-written summary
At fruit maturation, berries supplemented with UV light had the highest geraniol, hexanal and E-2-hexenal contents.
- Taxon
- grapee1
- Treatment
- UV lighte0
- Outcome
- geraniol, hexanal and E-2-hexenal contentse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“those with UV light had the highest geraniol, hexanal and E-2-hexenal contents”
e1“grape development”
Claim · model-written summary
Berries supplemented with red-blue light had lower linalool content than the control at fruit maturation.
Verbatim
e0“supplemented with red-blue light had lower linalool content than the control”
e1“grape development”
Claim · model-written summary
Supplementary light was beneficial for the accumulation of volatile aldehydes and ketones in grape berries.
- Taxon
- grapee1
- Treatment
- supplementary lighte0
- Outcome
- accumulation of volatile aldehydes and ketonese0
- Direction
- increaseinferrede0
Not reportedComparator
Verbatim
e0“supplementary light was also beneficial for the accumulation of volatile aldehydes and ketones”
e1“grape development”
Claim · model-written summary
Grape berries supplemented with UV light had the most abundant volatile compounds.
Not reportedComparator
Verbatim
e0“Grape berries supplemented with UV light had the largest single berry mass and most abundant volatile compounds”
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See all 26 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.