Abstract
Mohammed, A. R. and Tarpley, L. 2011. High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice ( Oryza sativa L.) plants. Can. J. Plant Sci. 91: 283–291. The presence of seasonally high night temperature (HNT) as a result of global warming, occurring during the critical stages of development, could reduce rice yield and quality. To understand how a combination of HNT and plant growth regulators (PGR; α-tocopherol and glycine betaine) affects yield and yield-related parameters of rice plants, we conducted three pot experiments under two levels of night temperature (NT; 27 and 32 o C) with or without PGR treatments. Plants were subjected to a HNT through the use of continuously controlled infrared heaters, starting 20 d after emergence (DAE), from 2000 until 0600. Plants were treated with α-tocopherol and glycine betaine 20 DAE. The NT had no effect on number of productive tillers, main-stem panicle length or number of primary branches per panicle; however, reduced yield resulted from significant effects on spikelet sterility (SS), and grain length, width, and weight. The grains located at the base of the panicle showed decreased length and width compared with grains located at the tip of the panicle. Application of glycine betaine increased grain yield by predominantly decreasing SS in rice plants, suggesting the potential future use of glycine betaine to help partially prevent HNT damage to rice.
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Claims 8
Claim · model-written summary
Night temperature had no effect on productive tillers, main-stem panicle length or primary branches per panicle of rice.
- Taxon
- Oryza sativa
Oryza sativat0 - Treatment
- NTe1
- Outcome
- number of productive tillers, main-stem panicle length or number of primary branches per paniclee1
- Direction
- had no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e1“The NT had no effect on number of productive tillers, main-stem panicle length or number of primary branches per panicle”
Claim · model-written summary
High night temperature reduced rice yield.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- NTe1
- Outcome
- yielde2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e1“The NT had no effect on number of productive tillers, main-stem panicle length or number of primary branches per panicle”
e2“reduced yield resulted from significant effects on spikelet sterility (SS), and grain length, width, and weight”
Claim · model-written summary
High night temperature had a significant effect on spikelet sterility of rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- NTe1
- Outcome
- spikelet sterility (SS)e2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e1“The NT had no effect on number of productive tillers, main-stem panicle length or number of primary branches per panicle”
e2“reduced yield resulted from significant effects on spikelet sterility (SS), and grain length, width, and weight”
Claim · model-written summary
High night temperature had a significant effect on grain length, width and weight of rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- NTe1
- Outcome
- grain length, width, and weighte2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e1“The NT had no effect on number of productive tillers, main-stem panicle length or number of primary branches per panicle”
e2“reduced yield resulted from significant effects on spikelet sterility (SS), and grain length, width, and weight”
Claim · model-written summary
Grains at the base of the rice panicle had decreased length and width compared with grains at the tip.
- Taxon
- Oryza sativaOryza sativat0
- Organ / stage
- grains located at the base of the paniclee3
- Outcome
- length and widthe3
- Direction
- decreasede3
- Comparator
- grains located at the tip of the paniclee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e3“The grains located at the base of the panicle showed decreased length and width compared with grains located at the tip of the panicle”
Claim · model-written summary
Glycine betaine application increased rice grain yield.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- glycine betainee4
- Outcome
- grain yielde4
- Direction
- increasede4
- Qualifier
- by predominantly decreasing SSe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e4“Application of glycine betaine increased grain yield by predominantly decreasing SS in rice plants”
Claim · model-written summary
Glycine betaine application decreased spikelet sterility in rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- glycine betainee4
- Outcome
- SSe4
- Direction
- decreasinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e4“Application of glycine betaine increased grain yield by predominantly decreasing SS in rice plants”
Claim · model-written summary
The authors suggest potential future use of glycine betaine to help partially prevent high night temperature damage to rice.
- Taxon
- riceOryza sativae5
- Outcome
- the potential future use of glycine betaine to help partially prevent HNT damagee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“High night temperature and plant growth regulator effects on spikelet sterility, grain characteristics and yield of rice (Oryza sativa L.) plants”
e5“suggesting the potential future use of glycine betaine to help partially prevent HNT damage to rice”
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See all 729 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.