Abstract
Water defi cit is one of the most important causes of decreased yield in cultivated plants. Non-foliar green organs in cotton play an important role in yield formation at the late growth stage. Although better photosynthetic performance was observed in a non-foliar organ(bract) compared with leaves under water defi cit. However, the physiological response of each organ in cotton to water defi cit has not been comprehensively studied in relation to the water status and photosynthesis characteristics. We studied the maintenance of water status of each organ in cotton by measuring their relative water content, proline content and stomatal characteristics. Water defi cit signifi cantly decreased the surface area of each organ, but to a lesser extent in non-foliar organs. Our results showed that the relative contribution of biomass accumulation of non-foliar organs increased under water defi cit. Non-foliar organs(bracts and capsule wall) showed less ontogenetic decrease in O2 evolution capacity and in RuBPC activity(per dry weight) as well as better antioxidant systems than leaves at various days after anthesis. We conclude that the photosynthesis from non-foliar organs is important for increasing cotton yield especially under water defi cit conditions.
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Claims 7
Claim · model-written summary
Water deficit significantly decreased surface area of each cotton organ.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- Water defi cite0
- Outcome
- surface area of each organe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water defi cit signifi cantly decreased the surface area of each organ”
t0“Cotton”
Claim · model-written summary
Water deficit decreased non-foliar organ surface area less than other organs.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- non-foliar organse0
- Treatment
- Water defi cite0
- Outcome
- surface area of each organe0
- Direction
- decreasede0
- Qualifier
- to a lesser extente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water defi cit signifi cantly decreased the surface area of each organ, but to a lesser extent in non-foliar organs”
t0“Cotton”
Claim · model-written summary
The relative biomass contribution of non-foliar organs increased under water deficit.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- water defi cite0
- Outcome
- relative contribution of biomass accumulation of non-foliar organse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the relative contribution of biomass accumulation of non-foliar organs increased under water defi cit”
t0“Cotton”
Claim · model-written summary
Bracts and capsule walls showed less ontogenetic decline in O2 evolution capacity than leaves.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- bracts and capsule walle0
- Outcome
- O2 evolution capacitye0
- Direction
- less ontogenetic decreasee0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Non-foliar organs(bracts and capsule wall) showed less ontogenetic decrease in O2 evolution capacity and in RuBPC activity(per dry weight) as well as better antioxidant systems than leaves at various days after anthesis”
t0“Cotton”
Claim · model-written summary
Bracts and capsule walls showed less ontogenetic decline in RuBPC activity than leaves.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- bracts and capsule walle0
- Gene
- RuBPCe0
- Outcome
- RuBPC activity(per dry weight)e0
- Direction
- less ontogenetic decreasee0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Non-foliar organs(bracts and capsule wall) showed less ontogenetic decrease in O2 evolution capacity and in RuBPC activity(per dry weight) as well as better antioxidant systems than leaves at various days after anthesis”
t0“Cotton”
Claim · model-written summary
Bracts and capsule walls had better antioxidant systems than leaves.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- bracts and capsule walle0
- Outcome
- antioxidant systemse0
- Direction
- bettere0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Non-foliar organs(bracts and capsule wall) showed less ontogenetic decrease in O2 evolution capacity and in RuBPC activity(per dry weight) as well as better antioxidant systems than leaves at various days after anthesis”
t0“Cotton”
Claim · model-written summary
The authors concluded non-foliar photosynthesis is important for cotton yield, especially under water deficit.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- non-foliar organse0
- Outcome
- cotton yielde0
- Direction
- increasinge0
- Qualifier
- photosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthesis from non-foliar organs is important for increasing cotton yield especially under water defi cit conditions”