Abstract
High temperature is usually one of the most important stresses during grain filling affecting both yield and quality in barley crops. In the present study, an attempt was made to assess in the field the effects of short periods of high temperature, using transparent boxes covering only the spikes, with thermostatically controlled electric resistance for increasing the temperature. Treatments consisted of 2 malting cultivars and 5 heat treatments of high temperatures (8°C above the environmental temperature for 6 h/day for 5 consecutive days) over different periods during grain filling. Final grain weight was reduced by 2–14%, depending on the timing of heat stress and the genotype. There was a significant increase in grain nitrogen percentage in both cultivars, and grain ß-glucans decreased with high temperatures in Logan and were unchanged in Beka. The resulting malt extract was reduced with exposure to high temperatures, depending on the cultivar, implying that even mild heat stress may change malting performance.
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Claims 5
Claim · model-written summary
Brief high temperature reduced final grain weight by 2–14%.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- heat stresse0
- Outcome
- Final grain weighte0
- Direction
- reducede0
- Value
- 2–14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“barley”
e0“Final grain weight was reduced by 2–14%, depending on the timing of heat stress and the genotype”
Claim · model-written summary
High temperature significantly increased grain nitrogen percentage in both cultivars.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- high temperaturee1
- Outcome
- grain nitrogen percentagee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“There was a significant increase in grain nitrogen percentage in both cultivars”
e1“short periods of high temperature”
Claim · model-written summary
High temperature decreased grain ß-glucans in Logan.
- Taxon
- barleyHordeum vulgaret0
- Material
- Logane0
- Treatment
- high temperaturese0
- Outcome
- grain ß-glucanse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“grain ß-glucans decreased with high temperatures in Logan”
Claim · model-written summary
High temperature left grain ß-glucans unchanged in Beka.
- Taxon
- barleyHordeum vulgaret0
- Material
- Bekae0
- Treatment
- high temperaturese0
- Outcome
- grain ß-glucanse0
- Direction
- unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“grain ß-glucans decreased with high temperatures in Logan and were unchanged in Beka”
Claim · model-written summary
High temperature reduced malt extract, depending on cultivar.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- high temperaturese0
- Outcome
- malt extracte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“The resulting malt extract was reduced with exposure to high temperatures, depending on the cultivar”
The same questions in other papers
heat · yield · Hordeum vulgare (barley)Positive and negative results
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See all 25 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.