Abstract
Different abiotic stresses, such as typhoon, excess water from the torrential rains, flooding during summer in the low lying areas and drought hinder sugarcane productivity. This study was initiated to analyze flooding induced changes in growth, physiology and root structure of sugarcane. A Japanese sugarcane variety, NiF8, was grown in pots inside a glasshouse under natural light and flooded for one month. Flooding increased root, leaf, stalk and total dry weight. Three different kinds of roots were initiated from the flooded plants, viz. (i) from the aerial nodes (above the water surface), which were reddish-black in color; (ii) from the pre-existing roots primordia, which were developed under water and whitish in color; and (iii) from the newly developed roots, which had upward growth against the gravity and major portion above the water surface, were relatively thinner and pinkish in color. Roots growth showed a positive relationship with that of shoot growth. Photosynthetic rate (Pn) was decreased by flooding, but stomatal conductance (gs) and intercellular CO2 concentrations (Ci) were increased; thus, indicated a non-stomatal limitation to Pn. Sugar concentration (brix) was found higher in the flood affected plants, especially in the juice of base and middle part of the stalk.
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Claims 11
Claim · model-written summary
Flooding increased root, leaf, and stalk dry weight.
Not reportedMaterialComparator
Verbatim
t0“Sugarcane”
e0“Flooding increased root, leaf, stalk and total dry weight”
Claim · model-written summary
Flooding increased total dry weight.
Not reportedComparator
Verbatim
t0“Sugarcane”
e0“Flooding increased root, leaf, stalk and total dry weight”
Claim · model-written summary
Flooded plants initiated roots from aerial nodes above the water surface.
Verbatim
t0“Sugarcane”
e0“roots were initiated from the flooded plants, viz. (i) from the aerial nodes (above the water surface), which were reddish-black in color”
Claim · model-written summary
Flooded plants developed whitish roots underwater from pre-existing root primordia.
Verbatim
t0“Sugarcane”
e0“from the pre-existing roots primordia, which were developed under water and whitish in color”
Claim · model-written summary
Flooded plants produced upward growing, thinner, pink roots with much of their length above the water.
Verbatim
t0“Sugarcane”
e0“from the newly developed roots, which had upward growth against the gravity and major portion above the water surface, were relatively thinner and pinkish in color”
Claim · model-written summary
Root growth was positively related to shoot growth.
Verbatim
t0“Sugarcane”
e0“Roots growth showed a positive relationship with that of shoot growth”
Claim · model-written summary
Flooding decreased photosynthetic rate.
Not reportedComparator
Verbatim
t0“Sugarcane”
e0“Photosynthetic rate (Pn) was decreased by flooding”
Claim · model-written summary
Flooding increased stomatal conductance.
Not reportedComparator
Verbatim
t0“Sugarcane”
e0“stomatal conductance (gs) and intercellular CO2 concentrations (Ci) were increased”
e1“by flooding, but stomatal conductance”
Claim · model-written summary
Flooding increased intercellular CO2 concentration.
- Taxon
- Sugarcanet0
- Treatment
- floodinge1
- Outcome
- intercellular CO2 concentrations (Ci)e0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“Sugarcane”
e0“intercellular CO2 concentrations (Ci) were increased”
e1“by flooding, but stomatal conductance”
Claim · model-written summary
The gas exchange pattern indicated a non-stomatal limitation to photosynthesis.
Verbatim
t0“Sugarcane”
e0“indicated a non-stomatal limitation to Pn”
Claim · model-written summary
Flooded plants had higher sugar concentration, especially in juice from the stalk base and middle.
- Taxon
- Sugarcanet0
- Organ / stage
- juice of base and middle part of the stalke0
- Treatment
- flood affectede0
- Outcome
- Sugar concentration (brix)e0
- Direction
- highere0
Not reportedComparator
Verbatim
t0“Sugarcane”
e0“Sugar concentration (brix) was found higher in the flood affected plants, especially in the juice of base and middle part of the stalk”
The same questions in other papers
flooding · growth · Saccharum officinarum (sugarcane)Results differ
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1 paper in the same direction as this paper · 2 in the opposite direction
- negative
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flooding · physiology: photosynthesis · Saccharum officinarum (sugarcane)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.