Abstract
SUMMARY The effects of supplementary far‐red light (FR), provided either (bring or at the end of the photoperiod, on reproductive shoot growth were investigated in Triticum aestivam L. plants grown under natural radiation. Natural photoperiods were inductive per se and supplementary FR had no obvious effects on the date of floral initation, as indicated by the lack of differences in both the final number of leaves and the rate of leaf appearance. The first internode to elongate was longer, and the first visible node appeared earlier in FR‐treated plants. However, the rate of extension growth of the peduncle (i.e. the uppermost internode, that bears the ear) was temporarily delayed by FR. Therefore, the period between the appearance of the first visible node and ear emergence was extended by FR. Neither the final length of the flag‐leaf sheath nor the final length of the stem were significantly affected by the treatments. The responses to FR provided during twilight were fully reversed by red light, indicating the involvement of phytochrome. The potential significance of stem‐growth responses mediated by phytochrome for wheat crop performance is discussed.
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Claims 8
Claim · model-written summary
Supplementary far-red light had no obvious effect on the date of floral initiation in wheat.
- Taxon
- Triticum aestivum L.
Triticum aestivumt0 - Treatment
- supplementary FRe1
- Outcome
- date of floral initatione1
- Direction
- no obvious effectse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e1“supplementary FR had no obvious effects on the date of floral initation, as indicated by the lack of differences in both the final number of leaves and the rate of leaf appearance”
Claim · model-written summary
Supplementary far-red light did not change the final number of leaves or the rate of leaf appearance in wheat.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- supplementary FRe1
- Outcome
- the final number of leaves and the rate of leaf appearancee1
- Direction
- lack of differencese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e1“supplementary FR had no obvious effects on the date of floral initation, as indicated by the lack of differences in both the final number of leaves and the rate of leaf appearance”
Claim · model-written summary
The first internode to elongate was longer in far-red-treated wheat plants.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- FRe2
- Outcome
- The first internode to elongatee2
- Direction
- longere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e2“The first internode to elongate was longer, and the first visible node appeared earlier in FR‐treated plants”
Claim · model-written summary
Far-red light made the first visible node appear earlier in wheat.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- FRe2
- Outcome
- the first visible nodee2
- Direction
- earliere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e2“The first internode to elongate was longer, and the first visible node appeared earlier in FR‐treated plants”
Claim · model-written summary
Far-red light temporarily delayed the rate of extension growth of the peduncle in wheat.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- FRe3
- Outcome
- rate of extension growth of the pedunclee3
- Direction
- delayede3
- Qualifier
- temporarilye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e3“However, the rate of extension growth of the peduncle (i.e. the uppermost internode, that bears the ear) was temporarily delayed by FR”
Claim · model-written summary
Far-red light extended the period between the appearance of the first visible node and ear emergence in wheat.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- FRe4
- Outcome
- the period between the appearance of the first visible node and ear emergencee4
- Direction
- extendede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e4“Therefore, the period between the appearance of the first visible node and ear emergence was extended by FR”
Claim · model-written summary
Far-red light did not significantly affect the final length of the flag-leaf sheath or of the stem in wheat.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- treatmentse5
- Outcome
- final length of the flag‐leaf sheath nor the final length of the steme5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e5“Neither the final length of the flag‐leaf sheath nor the final length of the stem were significantly affected by the treatments”
Claim · model-written summary
Red light fully reversed the responses to far-red light given during twilight, indicating phytochrome involvement in wheat.
- Taxon
- Triticum aestivum L.Triticum aestivumt0
- Treatment
- red lighte6
- Outcome
- The responses to FR provided during twilighte6
- Direction
- fully reversede6
- Qualifier
- indicating the involvement of phytochromee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum L.”
e6“The responses to FR provided during twilight were fully reversed by red light, indicating the involvement of phytochrome”
The same questions in other papers
light · growth · Triticum aestivum (wheat)Positive and negative results
38 papers in the same direction as this paper · 46 in the opposite direction
- positive
- positive
- positive
81 papers more in this group
See all 85 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.