Abstract
High temperature stress during grain-filling period is one of the major environmental constraints limiting the grain yield of wheat in Bangladesh. Crop growth response and relative performance of yield components of ten wheat genotypes were studied in two temperature conditions in glass rooms in a Phytotron to identify the genotype tolerant to high temperature stress. A favourable day/night temperatures of 15/10, 20/15, and 25/20°C were maintained from sowing to 60 days after sowing (DAS), 61 to 80 DAS and 81 DAS to maturity, respectively, in one glass room (G1); whereas day/night temperatures in another glass room (G2) was always maintained at 5°C higher than that of G1. Green leaf area and number of tillers in different times, number of days for the occurrence of major crop growth stages, relative performance in yield components, grain yield and heat susceptibility index were estimated following the standard methods. The higher temperature enhanced plant growth, flowering, and maturation. Thus the number of days to booting, heading, anthesis, and maturity of wheat were significantly decreased that varied among the genotypes. Green leaf area and productive tillers/plant were drastically reduced in time under high temperature. The reduced number of grains/spike and smaller grain size resulted from drastic reduction in growth duration were responsible for the yield loss of wheat at high temperature. Out of ten wheat genotypes, three were characterized as high temperature tolerant based on their relative performance in yield components, grain yield and heat susceptibility index. Key Words: High-temperature tolerance, wheat genotype, growth and yield components. DOI: 10.3329/bjar.v34i3.3961 Bangladesh J. Agril. Res. 34(3) : 361-372, September 2009
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Higher temperature accelerated wheat growth.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- higher temperaturee0
- Outcome
- plant growthe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher temperature enhanced plant growth, flowering, and maturation.”
t0“wheat”
Claim · model-written summary
Higher temperature accelerated wheat flowering and maturation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- higher temperaturee0
- Outcome
- flowering, and maturatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher temperature enhanced plant growth, flowering, and maturation.”
t0“wheat”
Claim · model-written summary
Higher temperature significantly shortened time to booting, heading, anthesis, and maturity, with variation among genotypes.
- Taxon
- wheatTriticum aestivume0
- Outcome
- number of days to booting, heading, anthesis, and maturitye0
- Direction
- decreasede0
- Qualifier
- varied among the genotypese0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of days to booting, heading, anthesis, and maturity of wheat were significantly decreased that varied among the genotypes.”
Claim · model-written summary
High temperature drastically reduced green leaf area over time.
Not reportedTaxonComparator
Verbatim
e0“Green leaf area and productive tillers/plant were drastically reduced in time under high temperature.”
Claim · model-written summary
High temperature drastically reduced productive tillers per plant over time.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- high temperaturee0
- Outcome
- productive tillers/plante0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green leaf area and productive tillers/plant were drastically reduced in time under high temperature.”
t0“wheat”
Claim · model-written summary
Shortened growth duration reduced wheat grains per spike.
- Taxon
- wheatTriticum aestivume0
- Outcome
- number of grains/spikee0
- Qualifier
- drastic reduction in growth duratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduced number of grains/spike and smaller grain size resulted from drastic reduction in growth duration were responsible for the yield loss of wheat at high temperature.”
Claim · model-written summary
Shortened growth duration reduced wheat grain size.
- Taxon
- wheatTriticum aestivume0
- Outcome
- grain sizee0
- Qualifier
- drastic reduction in growth duratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduced number of grains/spike and smaller grain size resulted from drastic reduction in growth duration were responsible for the yield loss of wheat at high temperature.”
Claim · model-written summary
Reduced grain number and size contributed to yield loss at high temperature.
- Taxon
- wheatTriticum aestivume0
- Outcome
- yield losse0
- Qualifier
- reduced number of grains/spike and smaller grain sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduced number of grains/spike and smaller grain size resulted from drastic reduction in growth duration were responsible for the yield loss of wheat at high temperature.”
Claim · model-written summary
Three of ten wheat genotypes were classified as high-temperature tolerant.
- Taxon
- wheatTriticum aestivume0
- Outcome
- high temperature tolerante0
- Value
- threee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Out of ten wheat genotypes, three were characterized as high temperature tolerant based on their relative performance in yield components, grain yield and heat susceptibility index.”
The same questions in other papers
heat · growth · Triticum aestivum (wheat)Positive and negative results
88 papers in the same direction as this paper · 42 in the opposite direction
- positive
- positive
- positive
127 papers more in this group
See all 131 papers →heat · yield · Triticum aestivum (wheat)Positive and negative results
254 papers in the same direction as this paper · 54 in the opposite direction
- negative
- negative
- no effect
305 papers more in this group
See all 309 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.