Abstract
Leaves of individual alfalfa ( Medicago sativa L.) plants were developed under light intensities which were either high (32 to 43 klux) or low (13 to 14 klux). One week after leaf unfolding, half of the plants in each growth chamber were transferred to the other. At 3 weeks, plants were again transferred so that the treatments included all combinations of light intensities and leaf age. Specific leaf weight (SLW = dry weight per unit leaf area) and net photosynthesis (Pn) were determined on leaves at 1, 3, and 5 weeks after leaf unfolding. Both SLW and Pn were higher under high light than low light. The major light intensity effect was that which the leaf had most recently been exposed to. Another was a carryover effect of the light intensity under which the leaf had developed. The SLW and Pn of alfalfa leaves changed with changes in light intensity at all the stages of maturity measured.
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Claims 5
Claim · model-written summary
Specific leaf weight of alfalfa leaves was higher under high light than under low light.
- Taxon
- Alfalfa
Medicago sativat0 - Treatment
- high lighte1
- Outcome
- SLWe1
- Direction
- highere1
- Comparator
- low lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Both SLW and Pn were higher under high light than low light”
t0“Photosynthetic and Morphological Adaptation of Alfalfa Leaves”
Claim · model-written summary
Net photosynthesis of alfalfa leaves was higher under high light than under low light.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Both SLW and Pn were higher under high light than low light”
t0“Photosynthetic and Morphological Adaptation of Alfalfa Leaves”
Claim · model-written summary
The major light intensity effect on alfalfa leaves was from the light the leaf had most recently been exposed to.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- light intensitye2
- Outcome
- major light intensity effecte2
- Qualifier
- that which the leaf had most recently been exposed toe2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The major light intensity effect was that which the leaf had most recently been exposed to”
t0“Photosynthetic and Morphological Adaptation of Alfalfa Leaves”
Claim · model-written summary
Alfalfa leaves showed a carryover effect of the light intensity under which they had developed.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- light intensity under which the leaf had developede3
- Outcome
- carryover effecte3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Another was a carryover effect of the light intensity under which the leaf had developed”
t0“Photosynthetic and Morphological Adaptation of Alfalfa Leaves”
Claim · model-written summary
SLW and Pn of alfalfa leaves changed with light intensity changes at all stages of maturity measured.
- Taxon
- AlfalfaMedicago sativat0
- Organ / stage
- all the stages of maturity measurede4
- Treatment
- changes in light intensitye4
- Outcome
- SLW and Pne4
- Direction
- changede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The SLW and Pn of alfalfa leaves changed with changes in light intensity at all the stages of maturity measured”
t0“Photosynthetic and Morphological Adaptation of Alfalfa Leaves”
The same questions in other papers
light · physiology: photosynthesis · Medicago sativa (alfalfa)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
See all 7 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.