Abstract
Abstract ‘Tifgreen’ bermudagrass [Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy] was exposed to 10°/7°C (day/night) temperatures following pretreatment with 120 mg Fe/m 2 or 12.4 mg BA/m 2 to determine their effects on net photosynthesis (Pn), respiration (Rs), leaf total nonstructural carbohydrate (TNC) content, and turf color at chilling temperatures. Average Pn and Rs rates were reduced 73% and 66%, respectively, by a 72-hr chilling period. Within 2 hr at 30° following chilling, Rs rates returned to prechill rates. However, Pn rates returned to within only 50% of prechill rates during the same recovery period. The lack of full photosynthetic recovery was associated with a 288% increase in leaf TNC. Iron increased Pn rates prior to chilling. This iron effect was associated with increased photosynthetic activity per unit of chlorophyll and was evident before, during, and after the chilling period. BA increased Pn rates before chilling and within 2 hr at 30° following chilling. However, during chilling, Pn rates for the BA treatment were similar to the control. Neither Fe nor BA significantly affected leaf TNC or Rs rates. Iron and BA caused higher turf color scores during chilling. Chemical names used: N -(phenylmethyl)-1 H -purin-6-amine (BA).
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 13
Claim · model-written summary
A 72-hr chilling period reduced average net photosynthesis (Pn) by 73%.
- Taxon
- Bermudagrass
Cynodon dactylont0 - Treatment
- 72-hr chilling periode1
- Outcome
- Pne1
- Direction
- reducede1
- Value
- 73%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e1“Average Pn and Rs rates were reduced 73% and 66%, respectively, by a 72-hr chilling period”
Claim · model-written summary
A 72-hr chilling period reduced average respiration (Rs) by 66%.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- 72-hr chilling periode1
- Outcome
- Rse1
- Direction
- reducede1
- Value
- 66%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e1“Average Pn and Rs rates were reduced 73% and 66%, respectively, by a 72-hr chilling period”
Claim · model-written summary
Rs rates returned to prechill rates within 2 hr at 30° following chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Within 2 hr at 30° following chillinge2
- Outcome
- Rs ratese2
- Direction
- returned toe2
- Comparator
- prechill ratese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e2“Within 2 hr at 30° following chilling, Rs rates returned to prechill rates. However, Pn rates returned to within only 50% of prechill rates during the same recovery period”
Claim · model-written summary
Pn returned to only within 50% of prechill rates during recovery at 30° following chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Within 2 hr at 30° following chillinge2
- Outcome
- Pn ratese2
- Direction
- returned to within only 50% ofe2
- Value
- 50%e2
- Comparator
- prechill ratese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e2“Within 2 hr at 30° following chilling, Rs rates returned to prechill rates. However, Pn rates returned to within only 50% of prechill rates during the same recovery period”
Claim · model-written summary
The lack of full photosynthetic recovery was associated with a 288% increase in leaf TNC.
- Taxon
- BermudagrassCynodon dactylont0
- Organ / stage
- leafe3
- Treatment
- lack of full photosynthetic recoverye3
- Outcome
- leaf TNCe3
- Direction
- increasee3
- Value
- 288%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e3“The lack of full photosynthetic recovery was associated with a 288% increase in leaf TNC”
Claim · model-written summary
Iron increased Pn before chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Irone4
- Outcome
- Pn ratese4
- Direction
- increasede4
- Qualifier
- prior to chillinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e4“Iron increased Pn rates prior to chilling”
Claim · model-written summary
The iron effect was associated with increased photosynthetic activity per unit of chlorophyll, evident before, during and after chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- irone5
- Outcome
- photosynthetic activity per unit of chlorophylle5
- Direction
- increasede5
- Qualifier
- evident before, during, and after the chilling periode5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e5“This iron effect was associated with increased photosynthetic activity per unit of chlorophyll and was evident before, during, and after the chilling period”
Claim · model-written summary
BA increased Pn before chilling and within 2 hr at 30° following chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- BAe6
- Outcome
- Pn ratese6
- Direction
- increasede6
- Qualifier
- before chilling and within 2 hr at 30° following chillinge6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e6“BA increased Pn rates before chilling and within 2 hr at 30° following chilling”
Claim · model-written summary
During chilling, Pn of BA-treated plants was similar to the control.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- BA treatmente7
- Outcome
- Pn ratese7
- Direction
- similare7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e7“However, during chilling, Pn rates for the BA treatment were similar to the control”
Claim · model-written summary
Iron did not significantly affect leaf TNC or Rs rates.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Fee7
- Outcome
- leaf TNC or Rs ratese7
- Direction
- no_changeinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e7“Neither Fe nor BA significantly affected leaf TNC or Rs rates”
Claim · model-written summary
BA did not significantly affect leaf TNC or Rs rates.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- BAe7
- Outcome
- leaf TNC or Rs ratese7
- Direction
- no_changeinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e7“Neither Fe nor BA significantly affected leaf TNC or Rs rates”
Claim · model-written summary
Iron caused higher turf color scores during chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Irone6
- Outcome
- turf color scorese6
- Direction
- highere6
- Qualifier
- during chillinge6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e6“Iron and BA caused higher turf color scores during chilling”
Claim · model-written summary
BA caused higher turf color scores during chilling.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- BAe6
- Outcome
- turf color scorese6
- Direction
- highere6
- Qualifier
- during chillinge6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“‘Tifgreen’ Bermudagrass Exposed to Chilling Temperatures”
e6“Iron and BA caused higher turf color scores during chilling”
The same questions in other papers
iron atom · quality: sugar starch · Cynodon dactylon (Bermuda grass)Results agree
1 paper in the same direction as this paper
- no effect
N-benzyladenine · quality: sugar starch · Cynodon dactylon (Bermuda grass)Results agree
1 paper in the same direction as this paper
- no effect
iron atom · quality: postharvest · Cynodon dactylon (Bermuda grass)Results agree
1 paper in the same direction as this paper
- positive
cold · physiology: photosynthesis · Cynodon dactylon (Bermuda grass)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.