Paper · 2009 · Journal of Irrigation and Drainage

Effects of Irrigation on Content of Neutral Aroma Constituents in Flue-cured Tobacco

Wang Guang-sheng

7
claims
13
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

The field experiment was conducted to investigate the effect of irrigation amount on content of neutral aroma constituents in flue-cured tobacco in 2008.The results show that the relationship between micro-spraying amount and the contents of carotene catabolites,phenylalanine catabolites,carbohydrate and maillard reaction catabolites in different positions was significantly different.For lower leaves,aroma content increased with the increase of micro-spraying amount to a certain degree,then decreased when the irrigation amount surpassed 48 mm.The content of aromas constituents in mid leave had no significant differences among different irrigation amounts.For upper leaves,the irrigation amount of 48 mm and 72 mm had the highest aroma content;the traditional furrow irrigation with the irrigation amount of 120 mm had the lowest content of aroma compound.It is concluded that irrigation amount of 48~72 mm with micro-spraying is conducive to the formation of aroma constituents for all leaf positions.No irrigated tobacco had low level of aroma matter in bottom leaves,while irrigating too much by furrow irrigation would decrease aroma content in upper leaves.

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Claims 7

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

The relation between micro-spraying amount and three classes of aroma constituents differed significantly by leaf position.

Taxon
Flue-cured Tobaccot0
Treatment
micro-spraying amounte0
Outcome
contents of carotene catabolites,phenylalanine catabolites,carbohydrate and maillard reaction catabolitese0

Not reportedDirection

Verbatim

e0

“relationship between micro-spraying amount and the contents of carotene catabolites,phenylalanine catabolites,carbohydrate and maillard reaction catabolites in different positions was significantly different”

✓ located verbatim in the source · abstract, characters 179–386 · show in text ↑
t0

“Flue-cured Tobacco”

✓ located verbatim in the source · title, characters 66–84 · show in text ↑
Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Lower leaf aroma content rose with micro-spraying amount to a point, then fell above 48 mm.

Taxon
Flue-cured Tobaccot0
Organ / stage
lower leavese0
Treatment
micro-spraying amounte0
Outcome
aroma contente0
Direction
increasede0
Qualifier
irrigation amount surpassed 48 mme0

Verbatim

e0

“For lower leaves,aroma content increased with the increase of micro-spraying amount to a certain degree,then decreased when the irrigation amount surpassed 48 mm”

✓ located verbatim in the source · abstract, characters 387–548 · show in text ↑
t0

“Flue-cured Tobacco”

✓ located verbatim in the source · title, characters 66–84 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Mid-leaf aroma constituents did not differ significantly among irrigation amounts.

Taxon
Flue-cured Tobaccot0
Organ / stage
mid leavee0
Treatment
different irrigation amountse0
Outcome
content of aromas constituentse0
Direction
no significant differencese0
Comparator
different irrigation amountse0

Verbatim

e0

“The content of aromas constituents in mid leave had no significant differences among different irrigation amounts”

✓ located verbatim in the source · abstract, characters 549–662 · show in text ↑
t0

“Flue-cured Tobacco”

✓ located verbatim in the source · title, characters 66–84 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Upper leaves had the highest aroma content at 48 and 72 mm irrigation.

Taxon
Flue-cured Tobaccot0
Organ / stage
upper leavese0
Treatment
irrigation amount of 48 mm and 72 mme0
Outcome
aroma contente0
Direction
higheste0

Not reportedComparator

Verbatim

e0

“For upper leaves,the irrigation amount of 48 mm and 72 mm had the highest aroma content”

✓ located verbatim in the source · abstract, characters 663–750 · show in text ↑
t0

“Flue-cured Tobacco”

✓ located verbatim in the source · title, characters 66–84 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Traditional furrow irrigation at 120 mm gave the lowest upper-leaf aroma compound content.

Taxon
Flue-cured Tobaccot0
Treatment
traditional furrow irrigation with the irrigation amount of 120 mme0
Outcome
content of aroma compounde0
Direction
loweste0

Not reportedComparator

Verbatim

e0

“the traditional furrow irrigation with the irrigation amount of 120 mm had the lowest content of aroma compound”

✓ located verbatim in the source · abstract, characters 751–862 · show in text ↑
t0

“Flue-cured Tobacco”

✓ located verbatim in the source · title, characters 66–84 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors concluded that 48–72 mm micro-spraying supports aroma formation across leaf positions.

Taxon
Flue-cured Tobaccot0
Treatment
irrigation amount of 48~72 mm with micro-sprayinge0
Outcome
formation of aroma constituents for all leaf positionse0

Verbatim

e0

“irrigation amount of 48~72 mm with micro-spraying is conducive to the formation of aroma constituents for all leaf positions”

✓ located verbatim in the source · abstract, characters 884–1008 · show in text ↑
t0

“Flue-cured Tobacco”

✓ located verbatim in the source · title, characters 66–84 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Unirrigated tobacco had low aroma matter in bottom leaves.

Organ / stage
bottom leavese0
Treatment
No irrigatede0
Outcome
low level of aroma mattere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“No irrigated tobacco had low level of aroma matter in bottom leaves”

✓ located verbatim in the source · abstract, characters 1009–1076 · show in text ↑

irrigation · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results

7 papers: 5 positive, 2 negative or no effect

1 paper in the same direction as this paper · 5 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 papers →

irrigation · quality: phytochemicals · Nicotiana tabacum (tobacco)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 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.