Abstract
SUMMARY In a field experiment where winter wheat and winter barley were sown on the same date, the patterns of root growth of the two species were similar, with a few roots reaching a depth of at least 120 cm. Roots senesced sooner in barley, in association with earlier maturity of the shoots and grain. The number of shoots and leaf area index of the barley were greater than for the wheat, but rates of dry-matter production until anthesis of the barley were similar in both species. The grain yield of wheat was about 10% heavier than for barley. Where chlormequat had been applied in early December at the 3- to 4-leaf stage, when shoot apices of both species were still vegetative, root density of the winter wheat in the following March and April was slightly greater than for untreated plants, but the difference disappeared later. For winter barley there was no effect of chlormequat on root growth until July when root length tended to be greater at depth after the chlormequat treatment. The chlormequat treatment significantly shortened stem length, but did not significantly affect the number of shoots, crop dry weight or grain yield of either species.
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Claims 9
Claim · model-written summary
The two cereals had similar root growth patterns, with a few roots reaching at least 120 cm.
- Taxon
- winter barley and winter wheat
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Hordeum vulgare
Triticum aestivumt0 - Outcome
- patterns of root growthe0
- Value
- at least 120 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the patterns of root growth of the two species were similar, with a few roots reaching a depth of at least 120 cm”
t0“A comparison of the root and shoot growth of winter barley and winter wheat, and the effect of an early application of chlormequat”
Claim · model-written summary
Barley roots senesced sooner, associated with earlier shoot and grain maturity.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- Rootse0
- Outcome
- Roots senescede0
- Direction
- soonere0
- Qualifier
- earlier maturity of the shoots and graine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roots senesced sooner in barley, in association with earlier maturity of the shoots and grain”
Claim · model-written summary
Barley had more shoots and greater leaf area index than wheat.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- number of shoots and leaf area indexe0
- Direction
- greatere0
- Comparator
- wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of shoots and leaf area index of the barley were greater than for the wheat”
Claim · model-written summary
Barley and wheat had similar dry matter production rates until anthesis.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- rates of dry-matter productione0
- Direction
- similare0
- Comparator
- both speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rates of dry-matter production until anthesis of the barley were similar in both species”
Claim · model-written summary
Wheat grain yield was about 10% greater than barley grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield of wheat was about 10% heavier than for barley”
Claim · model-written summary
Early chlormequat slightly increased wheat root density in March and April, with the difference disappearing later.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- chlormequatt0
- Outcome
- root densitye0
- Direction
- slightly greatere0
- Qualifier
- difference disappeared latere0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root density of the winter wheat in the following March and April was slightly greater than for untreated plants, but the difference disappeared later”
t0“A comparison of the root and shoot growth of winter barley and winter wheat, and the effect of an early application of chlormequat”
Claim · model-written summary
Chlormequat tended to increase deep barley root length in July.
- Taxon
- winter barleyHordeum vulgaree0
- Treatment
- chlormequat treatmente0
- Outcome
- root lengthe0
- Direction
- greatere0
- Qualifier
- until Julye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For winter barley there was no effect of chlormequat on root growth until July when root length tended to be greater at depth after the chlormequat treatment”
Claim · model-written summary
Chlormequat significantly shortened stem length in both cereals.
- Taxon
- winter barley and winter wheatHordeum vulgareTriticum aestivumt0
- Treatment
- chlormequat treatmente0
- Outcome
- stem lengthe0
- Direction
- shortenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlormequat treatment significantly shortened stem length”
t0“A comparison of the root and shoot growth of winter barley and winter wheat, and the effect of an early application of chlormequat”
Claim · model-written summary
Chlormequat did not significantly affect shoot number, crop dry weight, or grain yield in either cereal.
- Taxon
- winter barley and winter wheatHordeum vulgareTriticum aestivumt0
- Treatment
- chlormequatt0
- Outcome
- number of shoots, crop dry weight or grain yielde0
- Direction
- did not significantly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did not significantly affect the number of shoots, crop dry weight or grain yield of either species”
t0“A comparison of the root and shoot growth of winter barley and winter wheat, and the effect of an early application of chlormequat”
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