Abstract
Abstract Increasing the potassium (K) supply to wheat plants grown in pots extended the period of grain filling and increased the rate of grain growth, thus increasing the single grain weight. In all K treatments abscisic acid (ABA) content in the grain reached a maximum and this occurred when the growth rate of the grain declined and full ripening commenced. Increasing the K supply delayed the occurrence of the ABA maximum and reduced its absolute value. It seems that an extension of the grain filling period by better K nutrition might not only be due to a longer production of assimilates, but also due to a retarded and lower production of ABA in the grain. This result is supported by the finding that withholding of water supply for 1‐week periods during grain development increased ABA content in the grain and reduced single grain weight.
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Claims 7
Claim · model-written summary
More potassium extended grain filling.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Increasing the potassium (K) supplye0
- Outcome
- period of grain fillinge0
- Direction
- extendede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the potassium (K) supply to wheat plants grown in pots extended the period of grain filling”
Claim · model-written summary
More potassium increased grain growth rate and single grain weight.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Increasing the potassium (K) supplye0
- Outcome
- rate of grain growth, thus increasing the single grain weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the potassium (K) supply to wheat plants grown in pots extended the period of grain filling and increased the rate of grain growth, thus increasing the single grain weight.”
Claim · model-written summary
Grain ABA peaked as growth declined and ripening began.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- full ripeninge0
- Outcome
- abscisic acid (ABA) content in the graine0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“abscisic acid (ABA) content in the grain reached a maximum and this occurred when the growth rate of the grain declined and full ripening commenced”
e1“wheat plants”
Claim · model-written summary
Increasing K delayed the grain ABA maximum.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Increasing the K supplye0
- Outcome
- occurrence of the ABA maximume0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the K supply delayed the occurrence of the ABA maximum”
e1“wheat plants”
Claim · model-written summary
Increasing K reduced the grain ABA maximum value.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Increasing the K supplye0
- Outcome
- absolute valuee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the K supply delayed the occurrence of the ABA maximum and reduced its absolute value.”
e1“wheat plants”
Claim · model-written summary
One-week water withholding increased grain ABA.
- Taxon
- wheatTriticum aestivume1
- Treatment
- withholding of water supply for 1‐week periodse0
- Outcome
- ABA content in the graine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“withholding of water supply for 1‐week periods during grain development increased ABA content in the grain”
e1“wheat plants”
Claim · model-written summary
One-week water withholding reduced single grain weight.
- Taxon
- wheatTriticum aestivume1
- Treatment
- withholding of water supply for 1‐week periodse0
- Outcome
- single grain weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“withholding of water supply for 1‐week periods during grain development increased ABA content in the grain and reduced single grain weight”
e1“wheat plants”
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