Abstract
Photosynthetic capacity in non-leaf parts of a wheat plant and the contributions to grain yield cannot be neglected. It is important to understand the photosynthetic functions in these non-leaf organs of a crop plant. In the present research, with wheat leaves at different positions, spike, peduncle and leaf sheath as measurement materials, mathematic approaches were adopted to the analyses of photosynthetic light-response curve, photosynthetic hysteresis and the excised leaf photosynthetic declining curve. Large quantity of net photosynthesis was also measured in spike, leaf sheath and peduncle. Photosynthetic activities were higher in upper leaves than in the lower ones. The lower leaves showed a larger hysteresis than the flag leaf because of the more developed senescence and less sensitive stomatal response in the lower leaves. The higher photosynthetic hysteresis in spike, peduncle and leaf sheath might be attributed more to the morphological differences instead to an inactive photosynthetic mechanism. The response curves of photosynthesis in excised leaves to dehydration suggested that retention abilities of tissue water and photosynthesis were higher and the stomatal and cuticular transpiration in spike, peduncle and leaf sheath was lower than in leaf blades and in the flag leaf lower than in the lower leaf. It was concluded that photosynthesis in the spike possesses higher tolerance or avoidance against dehydration compared with the leaf blade and so does for the flag leaf compared with the lower leaf.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. 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 8
Claim · model-written summary
Photosynthesis was higher in upper wheat leaves than in lower leaves.
- Taxon
- wheat
Triticum aestivumt0 - Organ / stage
- upper leavese1
- Treatment
- upper leavese1
- Outcome
- Photosynthetic activitiese1
- Direction
- highere1
- Comparator
- the lower onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Photosynthetic activities were higher in upper leaves than in the lower ones”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
Lower wheat leaves showed larger photosynthetic hysteresis than the flag leaf.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- lower leavese2
- Outcome
- hysteresise2
- Direction
- largere2
- Qualifier
- more developed senescence and less sensitive stomatal responsee2
- Comparator
- the flag leafe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The lower leaves showed a larger hysteresis than the flag leaf because of the more developed senescence and less sensitive stomatal response in the lower leaves”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
Higher photosynthetic hysteresis in spike, peduncle and leaf sheath may be due to morphological differences rather than an inactive photosynthetic mechanism.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spike, peduncle and leaf sheathe3
- Outcome
- photosynthetic hysteresise3
- Qualifier
- morphological differencese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The higher photosynthetic hysteresis in spike, peduncle and leaf sheath might be attributed more to the morphological differences instead to an inactive photosynthetic mechanism”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
Under dehydration, retention of tissue water and photosynthesis was higher in spike, peduncle and leaf sheath than in leaf blades.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spike, peduncle and leaf sheathe4
- Treatment
- dehydratione4
- Outcome
- retention abilities of tissue water and photosynthesise4
- Direction
- highere4
- Comparator
- leaf bladese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The response curves of photosynthesis in excised leaves to dehydration suggested that retention abilities of tissue water and photosynthesis were higher and the stomatal and cuticular transpiration in spike, peduncle and leaf sheath was lower than in leaf blades”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
Under dehydration, stomatal and cuticular transpiration was lower in spike, peduncle and leaf sheath than in leaf blades.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spike, peduncle and leaf sheathe4
- Treatment
- dehydratione4
- Outcome
- stomatal and cuticular transpiratione4
- Direction
- lowere4
- Comparator
- leaf bladese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The response curves of photosynthesis in excised leaves to dehydration suggested that retention abilities of tissue water and photosynthesis were higher and the stomatal and cuticular transpiration in spike, peduncle and leaf sheath was lower than in leaf blades”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
Under dehydration, flag leaf transpiration was lower than lower-leaf transpiration.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- flag leafe5
- Treatment
- dehydratione4
- Outcome
- stomatal and cuticular transpiratione4
- Direction
- lowere5
- Comparator
- the lower leafe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The response curves of photosynthesis in excised leaves to dehydration suggested that retention abilities of tissue water and photosynthesis were higher and the stomatal and cuticular transpiration in spike, peduncle and leaf sheath was lower than in leaf blades”
e5“in the flag leaf lower than in the lower leaf”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
Photosynthesis in the spike had higher tolerance or avoidance of dehydration than the leaf blade.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spikee6
- Treatment
- dehydratione6
- Outcome
- tolerance or avoidancee6
- Direction
- highere6
- Comparator
- leaf bladee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“photosynthesis in the spike possesses higher tolerance or avoidance against dehydration compared with the leaf blade”
t0“Photosynthesis in different parts of a wheat plant”
Claim · model-written summary
The flag leaf had higher tolerance or avoidance of dehydration than the lower leaf.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- flag leafe7
- Treatment
- dehydratione6
- Outcome
- tolerance or avoidancee6
- Comparator
- the lower leafe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“photosynthesis in the spike possesses higher tolerance or avoidance against dehydration compared with the leaf blade”
e7“so does for the flag leaf compared with the lower leaf”
t0“Photosynthesis in different parts of a wheat plant”
The same questions in other papers
drought · disease · Triticum aestivum (wheat)Positive and negative results
21 papers in the same direction as this paper · 13 in the opposite direction
- negative
- negative
- negative
31 papers more in this group
See all 35 papers →drought · physiology: gas exchange · Triticum aestivum (wheat)Positive and negative results
4 papers in the same direction as this paper · 71 in the opposite direction
- negative
- negative
- negative
72 papers more in this group
See all 76 papers →drought · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
40 papers in the same direction as this paper · 204 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- negative
242 papers more in this group
See all 246 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.