Abstract
Study on effects of nitrogen sources and topping ways on plastid pigments and its degrading products and their relations in flue-cured tobacco were investigated with field experiments.The results showed that,the treatment of T1t2 which combined nitrate(T1) as nitrogen source with normal topping(t2) increased the content of carotenoids effectively,declined the content of chlorophyll and maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco.For the neophytadiene,carotenoids,chromoplast pigments and degradation products,the content was the highest in the treatment T1t2 in middle leaves,in the upper leaves,the content of neophytadiene and chromoplast pigments and degradation products of T2t2 was the highest,T1t2 was the second,and the content of carotenoids was the highest in the treatment T1t2.The correlation between plastid pigments and its degrading products showed that when the content of chlorophyll was lower,and the content of carotenoids was higher,the content of total degrading products of plastid pigments was higher.Therefore,the treatment of T1t2 has the biggest effect on plastid pigments and its degrading products,especially on middle leaves.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Nitrate nitrogen with normal topping (T1t2) increased carotenoid content in flue-cured tobacco.
- Taxon
- flue-cured tobaccoe1
- Organ / stage
- upper leaves and cutters leavese1
- Treatment
- nitrate(T1) as nitrogen source with normal topping(t2)e0
- Outcome
- content of carotenoidse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“the treatment of T1t2 which combined nitrate(T1) as nitrogen source with normal topping(t2) increased the content of carotenoids effectively”
e1“in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
Nitrate nitrogen with normal topping (T1t2) declined chlorophyll content in flue-cured tobacco.
- Taxon
- flue-cured tobaccoe2
- Treatment
- nitrate(T1) as nitrogen source with normal topping(t2)e0
- Outcome
- content of chlorophylle1
- Direction
- declinede1
Not reportedComparator
Verbatim
e0“the treatment of T1t2 which combined nitrate(T1) as nitrogen source with normal topping(t2) increased the content of carotenoids effectively”
e1“declined the content of chlorophyll”
e2“in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
Nitrate nitrogen with normal topping (T1t2) kept the carotenoid-to-chlorophyll ratio suitable in upper and cutter leaves.
- Taxon
- flue-cured tobaccoe1
- Organ / stage
- upper leaves and cutters leavese1
- Treatment
- nitrate(T1) as nitrogen source with normal topping(t2)e0
- Outcome
- ratio of the carotenoids and chlorophylle1
- Direction
- maintainede1
- Qualifier
- suitablee1
Not reportedComparator
Verbatim
e0“the treatment of T1t2 which combined nitrate(T1) as nitrogen source with normal topping(t2) increased the content of carotenoids effectively”
e1“maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
In middle leaves, T1t2 gave the highest content of neophytadiene, carotenoids and chromoplast pigments.
- Taxon
- flue-cured tobaccoe1
- Organ / stage
- middle leavese0
- Treatment
- T1t2e0
- Outcome
- neophytadiene,carotenoids,chromoplast pigmentse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“For the neophytadiene,carotenoids,chromoplast pigments and degradation products,the content was the highest in the treatment T1t2 in middle leaves”
e1“maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
In middle leaves, T1t2 gave the highest content of degradation products.
- Taxon
- flue-cured tobaccoe1
- Organ / stage
- middle leavese0
- Treatment
- T1t2e0
- Outcome
- degradation productse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“For the neophytadiene,carotenoids,chromoplast pigments and degradation products,the content was the highest in the treatment T1t2 in middle leaves”
e1“maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
In upper leaves, T2t2 gave the highest content of neophytadiene, chromoplast pigments and degradation products.
Verbatim
e0“in the upper leaves,the content of neophytadiene and chromoplast pigments and degradation products of T2t2 was the highest”
e1“T1t2 was the second,and the content of carotenoids was the highest in the treatment T1t2”
e2“maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
In upper leaves, T1t2 ranked second for neophytadiene, chromoplast pigments and degradation products.
- Taxon
- flue-cured tobaccoe2
- Organ / stage
- upper leavese0
- Treatment
- T1t2e1
- Outcome
- neophytadiene and chromoplast pigments and degradation productse0
- Direction
- the seconde1
Not reportedComparator
Verbatim
e0“in the upper leaves,the content of neophytadiene and chromoplast pigments and degradation products of T2t2 was the highest”
e1“T1t2 was the second,and the content of carotenoids was the highest in the treatment T1t2”
e2“maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
T1t2 gave the highest carotenoid content overall.
Not reportedComparator
Verbatim
e0“T1t2 was the second,and the content of carotenoids was the highest in the treatment T1t2”
e1“maintained the ratio of the carotenoids and chlorophyll suitable in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
Lower chlorophyll and higher carotenoid content are associated with higher total degradation products of plastid pigments.
Verbatim
e0“when the content of chlorophyll was lower,and the content of carotenoids was higher,the content of total degrading products of plastid pigments was higher”
e1“in the upper leaves and cutters leaves of flue-cured tobacco”
Claim · model-written summary
T1t2 has the biggest effect on plastid pigments and their degradation products, especially in middle leaves.
- Taxon
- flue-cured tobaccoe1
- Organ / stage
- middle leavese0
- Treatment
- the treatment of T1t2e0
- Outcome
- plastid pigments and its degrading productse0
- Direction
- biggest effecte0
Not reportedComparator
Verbatim
e0“the treatment of T1t2 has the biggest effect on plastid pigments and its degrading products,especially on middle leaves”
e1“in the upper leaves and cutters leaves of flue-cured tobacco”
The same questions in other papers
nitrogen · physiology: pigments · Nicotiana tabacum (tobacco)Positive and negative results
10 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- no effect
10 papers more in this group
See all 14 papers →pruning · physiology: pigments · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.