Abstract
Wheat root growth was followed to 30 days from planting in wheat supplied with standard, twofold, half and nil levels of nitrogen, phosphorus and potassium. Root numbers and lengths followed consistent patterns of increase in the seminal and nodal root systems of all treatments. Most root components demonstrated their highest rates of relative increase in length and number immediately after first appearance. Within a few days this decreased to a constant rate of increase which continued until the end of the experiment. Rates during the stages of constant relative increase were higher with increasing order of lateral, and the same for all treatments, except when nutrient deficiency seriously suppressed root growth. Potassium deficiency stopped root growth completely within 10–12 days of planting. Nitrogen and phosphorus deficiencies gave increasing delays in root component appearance with increasing order of lateral. Increasing suppression of seminal lateral numbers and a severe suppression of nodal root growth followed. Lower root numbers caused by nitrogen deficiency were compensated by greater lateral lengths in the seminal but not the nodal root systems. Some reduction in root growth resulted from application of the half and twofold levels of nitrogen, phosphorus and potassium. All responses to applied nutrient levels were more obvious with increasing order of lateral and with the nodal rather than seminal root systems. The nodal root system reflected plant response better than the seminal root system.
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Claims 11
Claim · model-written summary
Seminal and nodal root numbers and lengths increased across treatments.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- Root numbers and lengthse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root numbers and lengths followed consistent patterns of increase in the seminal and nodal root systems of all treatments.”
t0“Root growth of wheat”
Claim · model-written summary
Most root components had their highest relative growth rates immediately after emergence.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- rates of relative increase in length and numbere0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most root components demonstrated their highest rates of relative increase in length and number immediately after first appearance.”
t0“Root growth of wheat”
Claim · model-written summary
Relative growth rates then fell to a constant rate.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- rate of increasee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within a few days this decreased to a constant rate of increase which continued until the end of the experiment.”
t0“Root growth of wheat”
Claim · model-written summary
Higher order laterals had higher rates during constant relative growth.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- laterale0
- Outcome
- Rates during the stages of constant relative increasee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rates during the stages of constant relative increase were higher with increasing order of lateral”
t0“Root growth of wheat”
Claim · model-written summary
Potassium deficiency stopped root growth within 10–12 days.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Potassium deficiencye0
- Outcome
- root growthe0
- Direction
- stoppede0
- Value
- 10–12 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium deficiency stopped root growth completely within 10–12 days of planting.”
t0“Root growth of wheat”
Claim · model-written summary
Nitrogen and phosphorus deficiencies delayed root component appearance increasingly in higher order laterals.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nitrogen and phosphorus deficienciese0
- Outcome
- root component appearancee0
- Direction
- delayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen and phosphorus deficiencies gave increasing delays in root component appearance with increasing order of lateral.”
t0“Root growth of wheat”
Claim · model-written summary
Nutrient deficiencies suppressed seminal lateral number and nodal root growth.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- seminal lateral numbers and a severe suppression of nodal root growthe0
- Direction
- suppressione0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing suppression of seminal lateral numbers and a severe suppression of nodal root growth followed.”
t0“Root growth of wheat”
Claim · model-written summary
Under nitrogen deficiency, greater seminal lateral length compensated for lower root numbers.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- nitrogen deficiencye0
- Outcome
- lateral lengthse0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower root numbers caused by nitrogen deficiency were compensated by greater lateral lengths in the seminal but not the nodal root systems.”
t0“Root growth of wheat”
Claim · model-written summary
Half and twofold nutrient levels reduced some root growth.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- half and twofold levels of nitrogen, phosphorus and potassiume0
- Outcome
- root growthe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some reduction in root growth resulted from application of the half and twofold levels of nitrogen, phosphorus and potassium.”
t0“Root growth of wheat”
Claim · model-written summary
Applied nutrient responses were more pronounced in higher order laterals and nodal roots.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- responses to applied nutrient levelse0
- Direction
- more obviouse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All responses to applied nutrient levels were more obvious with increasing order of lateral and with the nodal rather than seminal root systems.”
t0“Root growth of wheat”
Claim · model-written summary
The nodal root system reflected plant response better than the seminal system.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- nodal root systeme0
- Outcome
- reflected plant response bettere0
- Comparator
- seminal root systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nodal root system reflected plant response better than the seminal root system.”
t0“Root growth of wheat”
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See all 551 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.