Abstract
Sugarcane (Saccharum spp.) is an economical crop in the tropical and subtropical countries. However, because of global climate change, flooding has become problematic, particularly during the rainy season, in Thailand. We investigated the effects of floods on three commercial sugarcane cultivars, namely NiF8, U-thong 6 (UT6), and U-thong 9 (UT9), as well as Erianthus spp. Growth was assessed using a pot experiment in a glasshouse with two treatments: (1) control and (2) 60 d of flooding followed by 30 d of normal conditions. In comparison with control, during prolonged flooding, Erianthus showed greatly decreased CO2 assimilation, whereas NiF8, UT6, and UT9 showed slightly declined CO2 assimilation. Growth in plants subjected to 60 d of flooding was less influenced by floods while sucrose content was not affected except in UT6. During flooding, some roots died, resulting in plants compensating adventitious roots to offset the negative effects of root death and to assist them in maintaining their growth, which appeared from the submerged nodes, with different characteristics for each cultivar. However, 30 d after draining, roots remained damaged, while adventitious roots died, resulting in lesser growth as compared with the control, but it did not significantly affect sucrose content and sugar yield. This study suggests that sugarcane plants need to produce the adventitious roots to compensate their roots’ death during flooding and require time to recover their root system after flooding for obtaining the optimum yield and quality at harvest.
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Claims 11
Claim · model-written summary
Flooding greatly decreased CO2 assimilation in Erianthus.
Verbatim
e0“In comparison with control, during prolonged flooding, Erianthus showed greatly decreased CO2 assimilation”
Claim · model-written summary
Flooding slightly decreased CO2 assimilation in NiF8, UT6 and UT9.
Verbatim
e0“In comparison with control, during prolonged flooding, Erianthus showed greatly decreased CO2 assimilation, whereas NiF8, UT6, and UT9 showed slightly declined CO2 assimilation”
t0“sugarcane”
Claim · model-written summary
Growth during 60 days of flooding was less influenced.
Not reportedComparator
Verbatim
e0“Growth in plants subjected to 60 d of flooding was less influenced by floods”
t0“sugarcane”
Claim · model-written summary
Sucrose content was generally unaffected by flooding except in UT6.
Not reportedComparator
Verbatim
e0“sucrose content was not affected except in UT6”
t0“sugarcane”
t1“flood conditions”
e1“In comparison with control, during prolonged flooding”
Claim · model-written summary
During flooding some roots died.
Verbatim
e0“During flooding, some roots died”
t0“sugarcane”
Claim · model-written summary
Plants produced adventitious roots from submerged nodes during flooding.
Verbatim
e0“plants compensating adventitious roots to offset the negative effects of root death and to assist them in maintaining their growth, which appeared from the submerged nodes”
t0“sugarcane”
Claim · model-written summary
Roots remained damaged 30 days after draining.
Verbatim
e0“30 d after draining, roots remained damaged”
t0“sugarcane”
Claim · model-written summary
Adventitious roots died 30 days after draining.
Verbatim
e0“30 d after draining, roots remained damaged, while adventitious roots died”
t0“sugarcane”
Claim · model-written summary
Growth was lower than control 30 days after draining.
Verbatim
e0“resulting in lesser growth as compared with the control”
t0“sugarcane”
t1“flood conditions”
e1“Growth in plants subjected to 60 d of flooding was less influenced by floods”
Claim · model-written summary
Postdrainage flooding did not significantly affect sucrose content and sugar yield.
Not reportedComparatorDirection
Verbatim
e0“it did not significantly affect sucrose content and sugar yield”
t0“sugarcane”
t1“flood conditions”
e1“Growth in plants subjected to 60 d of flooding was less influenced by floods”
Claim · model-written summary
The authors recommend adventitious root production and recovery time for optimum yield and quality.
Verbatim
e0“sugarcane plants need to produce the adventitious roots to compensate their roots’ death during flooding and require time to recover their root system after flooding for obtaining the optimum yield and quality at harvest”
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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.