Abstract
Leaf gas exchange and growth responses of three melon cultivars, i.e., Mission, Da Vinci (var. reticulatus), and Super Nectar (var. inodorus) to two irrigation regimes, 50 and 100% crop evapotranspiration (ETc) were investigated under water-limited conditions of southwest Texas. In 2012, deficit irrigation (50% ETc) significantly decreased above-ground biomass, leaf area, leaf number, and specific leaf area, while leaf gas exchange, relative water content, water potential, chlorophyll fluorescence (Fv/Fm), and chlorophyll content (SPAD index) were not affected. However, in the drier year 2011, deficit irrigation significantly reduced net photosynthetic rate (PN) and stomatal conductance (gs). Further, the responses to water deficit varied with cultivars. At 50% ETc, PN and gs were maintained in cv. Da Vinci while decreased in Mission and Super Nectar. Thus, the late maturing cv. Super Nectar appeared to be more sensitive to drought stress, possibly due to the decrease in leaf area and PN.
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Claims 11
Claim · model-written summary
In 2012, deficit irrigation significantly decreased above-ground biomass.
- Taxon
- Cucumis melo L.
.jpg?width=60)
Cucumis melot0 - Treatment
- deficit irrigation (50% ETc)e0
- Outcome
- above-ground biomasse0
- Direction
- decreasede0
- Qualifier
- In 2012e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Cucumis melo L.”
e0“In 2012, deficit irrigation (50% ETc) significantly decreased above-ground biomass, leaf area, leaf number, and specific leaf area”
Claim · model-written summary
In 2012, deficit irrigation significantly decreased leaf area, leaf number and specific leaf area.
- Taxon
- Cucumis melo L.Cucumis melot0
- Treatment
- deficit irrigation (50% ETc)e0
- Outcome
- leaf area, leaf number, and specific leaf areae0
- Direction
- decreasede0
- Qualifier
- In 2012e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“In 2012, deficit irrigation (50% ETc) significantly decreased above-ground biomass, leaf area, leaf number, and specific leaf area”
Claim · model-written summary
In 2012, leaf gas exchange was not affected by deficit irrigation.
- Taxon
- Cucumis melo L.Cucumis melot0
- Outcome
- leaf gas exchangee0
- Direction
- not affectede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“leaf gas exchange, relative water content, water potential, chlorophyll fluorescence (Fv/Fm), and chlorophyll content (SPAD index) were not affected”
Claim · model-written summary
In 2012, relative water content and water potential were not affected.
- Taxon
- Cucumis melo L.Cucumis melot0
- Outcome
- relative water content, water potentiale0
- Direction
- not affectede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“leaf gas exchange, relative water content, water potential, chlorophyll fluorescence (Fv/Fm), and chlorophyll content (SPAD index) were not affected”
Claim · model-written summary
In 2012, chlorophyll fluorescence and chlorophyll content were not affected.
- Taxon
- Cucumis melo L.Cucumis melot0
- Outcome
- chlorophyll fluorescence (Fv/Fm), and chlorophyll content (SPAD index)e0
- Direction
- not affectede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“leaf gas exchange, relative water content, water potential, chlorophyll fluorescence (Fv/Fm), and chlorophyll content (SPAD index) were not affected”
Claim · model-written summary
In 2011, deficit irrigation significantly reduced net photosynthetic rate.
- Taxon
- Cucumis melo L.Cucumis melot0
- Treatment
- deficit irrigatione0
- Outcome
- net photosynthetic rate (PN)e0
- Direction
- reducede0
- Qualifier
- drier year 2011e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“in the drier year 2011, deficit irrigation significantly reduced net photosynthetic rate (PN) and stomatal conductance (gs)”
Claim · model-written summary
In 2011, deficit irrigation significantly reduced stomatal conductance.
- Taxon
- Cucumis melo L.Cucumis melot0
- Treatment
- deficit irrigatione0
- Outcome
- stomatal conductance (gs)e0
- Direction
- reducede0
- Qualifier
- drier year 2011e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“in the drier year 2011, deficit irrigation significantly reduced net photosynthetic rate (PN) and stomatal conductance (gs)”
Claim · model-written summary
At 50% ETc, Da Vinci maintained PN and gs.
- Taxon
- Cucumis melo L.Cucumis melot0
- Material
- cv. Da Vincie0
- Treatment
- 50% ETce0
- Outcome
- PN and gse0
- Direction
- maintainede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“At 50% ETc, PN and gs were maintained in cv. Da Vinci while decreased in Mission and Super Nectar”
Claim · model-written summary
At 50% ETc, Mission had decreased PN and gs.
- Taxon
- Cucumis melo L.Cucumis melot0
- Material
- Missione0
- Treatment
- 50% ETce0
- Outcome
- PN and gse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“At 50% ETc, PN and gs were maintained in cv. Da Vinci while decreased in Mission and Super Nectar”
Claim · model-written summary
At 50% ETc, Super Nectar had decreased PN and gs.
- Taxon
- Cucumis melo L.Cucumis melot0
- Material
- Super Nectare0
- Treatment
- 50% ETce0
- Outcome
- PN and gse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“At 50% ETc, PN and gs were maintained in cv. Da Vinci while decreased in Mission and Super Nectar”
Claim · model-written summary
Super Nectar appeared more drought sensitive, possibly due to decreased leaf area and PN.
- Taxon
- Cucumis melo L.Cucumis melot0
- Material
- cv. Super Nectare0
- Outcome
- more sensitive to drought stresse0
- Qualifier
- possibly due to the decrease in leaf area and PNe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cucumis melo L.”
e0“the late maturing cv. Super Nectar appeared to be more sensitive to drought stress, possibly due to the decrease in leaf area and PN”
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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.