Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

Root weight density followed the root length density pattern.

Taxon: maizeZea mayst0
Outcome: Root weight densitye0
Comparator: root length densitye0

Not reportedDirection

Verbatim

e0
“Root weight density is consistent with the pattern of the root length density”
✓ located verbatim in the source · abstract, characters 1009–1086

t0
“Maize”
✓ located verbatim in the source · title, characters 81–86

Title

Effect of Different Drip Irrigation Schedule under Mulch on Root Distribution of Maize

XU Bao-sha Shuitu baochi yanjiu 2014

Other claims from this paper (14)

Association Reduced water stress increased root length in surface soil.
Association Root length in deep soil followed the opposite pattern.
Observation Maximum maize rooting depth was 80 cm.
Observation At the big horn stage, treatment 1 had minimum root length density at 20 cm, 77.27mm/cm3.
Observation Treatment 9 had maximum root length density, 143.31mm/cm3.
Observation Treatment 8 had minimum root length density, 16.11mm/cm3.
Observation Treatment 1 had maximum root length density, 24.89mm/cm3.
Association Water stress promoted deeper root extension.
Observation At jointing, treatment 1 had 67.9% of root dry weight in the 0—20cm layer.
Observation At jointing, treatment 9 had 90.2% of root dry weight in the 0—20cm layer.
Association Surface root weight density rose with irrigation volume as plants grew.
Observation At big horn stage, root weight density under treatment 1 was 8.16×10-4 g/cm3.
Observation At big horn stage, root weight density under treatment 7 was 2.358×10-3 g/cm3.
Mechanism Water stress produced deeper but finer and smaller roots.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Root surface area, length density and volume density decreased as soil bulk density increased.

Taxon: Vetiver grassChrysopogon zizanioidest0
Treatment: increasing bulk densitye0
Outcome: root surface area,root length density and root volume densitye0
Direction: decreasede0

Not reportedComparator

Verbatim

e0
“The results showed that shoot and root dry weight,root:shoot ratio,root surface area,root length density and root volume density decreased with increasing bulk density,but that average root diameter increased.”
✓ located verbatim in the source · abstract, characters 493–702

t0
“Vetiver grass”
✓ located after whitespace/quote normalisation · title, characters 62–75

Title

Effect of soil bulk density on root morphology and biomass of vetiver grass seedlings

Liu Wan Acta Pratacultural Science 2015

Other claims from this paper (7)

Intervention effect Shoot and root dry weight and root:shoot ratio decreased as soil bulk density increased.
Intervention effect Average root diameter increased as soil bulk density increased.
Observation D1.20 and D1.35 roots were more abundant in the upper and lower soil horizons.
Intervention effect High soil bulk density confined vetiver roots to the upper horizon.
Association Root diameter decreased with depth at D1.20 and D1.35.
Association Root diameter increased with depth at D1.58.
Observation Vetiver grass was judged tolerant of moderately compacted soil.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

p35S:: MYST6 expression increased root hair length, root hair density and lateral root density.

Taxon: ArabidopsisArabidopsist0
Material: Col-0e0
Treatment: Expression of p35S:: MYST6e0
Outcome: root hair lengths, root hair density, and lateral root densitye0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Expression of p35S:: MYST6 in Col-0 increased root hair lengths, root hair density, and lateral root density”
✓ located verbatim in the source · abstract, characters 1015–1123

t0
“Arabidopsis”
✓ located verbatim in the source · title, characters 0–11

Title

Arabidopsis MYST6 encodes a rhamnogalacturonan lyase that modulates root growth

Zhou Shao-hua Purdue e-Pubs (Purdue University System) 2010

Other claims from this paper (9)

Observation AtMYST6 was identified as a plant RG-lyase.
Intervention effect Changing MYST6 expression altered total RG-lyase activity and RG-I structure.
Observation Homozygous insertion mutants had short root hairs and reduced root growth.
Observation Homozygous insertion mutants had conditional early shoot senescence.
Observation MYST6 RNAi lines partly reproduced root growth phenotypes but did not senesce early.
Intervention effect Expression of MYST6 under its native promoter rescued mutant phenotypes.
Intervention effect p35S:: MYST6 expression caused partial loss of apical dominance.
Association Expression analysis suggests kinases and phosphatases participate in MYST6 function.
Mechanism MYST6 expression affects RG-I cleavage and may produce lepidimoide, potentially triggering pathways controlling division and organ growth.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Narrow rows increased root weight density, root length density, and root surface area density relative to wide rows across densities at 0–60 cm.

Taxon: maizeZea mayst0
Treatment: narrow row spacinge0
Outcome: root weight density,root length density and root surface area densitye0
Direction: greater thane0
Qualifier: 0-60 cm soil depth under each plant densitye0
Comparator: wide row spacinge0

Verbatim

e0
“root weight density,root length density and root surface area density with narrow row spacing were greater than wide row spacing in 0-60 cm soil depth under each plant density.”
✓ located verbatim in the source · abstract, characters 246–422

t0
“Maize”
✓ located verbatim in the source · title, characters 72–77

Title

Effect of Spacing Allocation on the Root System Characters and Yield of Maize

Pu Wang Yumi kexue 2013

Other claims from this paper (10)

Intervention effect At 50 025 plants/ha, row spacings significantly differed in root weight and length density at silking.
Intervention effect At 50 025 plants/ha, row spacings significantly differed in root surface area density at three stages.
Intervention effect At 67 500 plants/ha, row spacings significantly differed in root weight density at three stages.
Intervention effect At 67 500 plants/ha, row spacings significantly differed in root length and surface area densities at the 10-leaf and later stages.
Intervention effect At 100 050 plants/ha, root weight and length density differed significantly between spacings at the 10-leaf stage and 25 days after silking.
Intervention effect At 100 050 plants/ha, root weight density differed significantly between spacings at all three stages.
Intervention effect Reduced row spacing increased xylem sap volume.
Intervention effect Reduced row spacing increased maize yield by 6.76% at 50 025 plants/ha.
Intervention effect Reduced row spacing increased maize yield by 4.89% at 67 500 plants/ha.
Association Root traits and yield were significantly positively correlated at the 10-leaf stage.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Root volume density and root active surface area index decreased as planting density increased.

Taxon: LD818e0
Treatment: planting densitye1
Outcome: root volume density and RAIe0
Direction: decreasede0

Verbatim

e0
“then root volume density and RAI of LD818 decreased”
✓ located verbatim in the source · abstract, characters 695–746

e1
“With increasing planting density”
✓ located verbatim in the source · abstract, characters 747–779

Title

Influence of Planting Density on the Root Dynamic Growth and Yield in Erectophile Type Maize LD818

Qingcheng Wang Yumi kexue 2013

Other claims from this paper (8)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The maximum root length density, root surface area density and root dry matter density were obtained under no-till.

Taxon: wheatTriticum aestivume0
Treatment: NTe1
Outcome: RLD, root surface area density and root dry matter densitye1
Direction: maximume1

Not reportedComparator

Verbatim

e0
“dryland wheat (Triticum aestivum L.)”
✓ located verbatim in the source · abstract, characters 99–135

e1
“The maximum RLD, root surface area density and root dry matter density were obtained under NT”
✓ located verbatim in the source · abstract, characters 921–1014

Title

Stand establishment, root development and yield of winter wheat as affected by tillage and straw mulch in the water deficit hilly region of southwestern China

Chao-su LI; Jin-gang LI; Yong-lu TANG; et al. Journal of Integrative Agriculture 2016. doi:10.1016/s2095-3119(15)61184-4

Other claims from this paper (12)

Intervention effect No-till gave lower soil cover thickness for wheat seed than rotary and conventional tillage.
Intervention effect No-till gave a higher number of uncovered seeds than rotary and conventional tillage.
Intervention effect No-till gave a lower percentage of seedling-less ridges than rotary and conventional tillage.
Intervention effect No-till gave lower tiller density than rotary and conventional tillage.
Intervention effect Straw mulch gave higher tiller density than non-straw mulch.
Intervention effect Straw mulching gave more soil water content and root length density at most growth stages and soil depths.
Intervention effect In the topmost 10 cm soil layer, root length density was higher under no-till than under rotary and conventional tillage.
Intervention effect There were no significant differences in wheat yield or yield components among tillage treatments in 2011-2012.
Intervention effect In 2012-2013 no-till gave significantly higher yield than rotary and conventional tillage.
Intervention effect Grain yield was significantly higher with straw mulch than with non-straw mulch.
Observation A strong relationship was observed between water-use efficiency and grain yield.
Recommendation The authors conclude that no-till and straw mulch were beneficial for wheat, giving higher grain yield and enhanced water-use efficiency, especially in a low rainfall year.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Root length density was significantly greater under high density than low density.

Taxon: MaizeZea mayst0
Outcome: Root length densitye0
Direction: biggere0
Comparator: low density populatione0

Not reportedTreatment

Verbatim

e0
“Root length density(RLD)was significantly bigger than that of low density population”
✓ located verbatim in the source · abstract, characters 866–950

t0
“Maize”
✓ located verbatim in the source · title, characters 77–82

Title

Studies on the Effect of Density on the Root-shoot Relationship and Yield in Maize

Xiu Wen-wen Acta Agriculturae Boreali-Sinica 2012

Other claims from this paper (8)

Intervention effect Plant character indices decreased as maize density increased.
Intervention effect Population quality increased with density.
Intervention effect Population leaf area and biomass increased significantly.
Intervention effect High density contracted root distribution horizontally.
Intervention effect High density extended root distribution vertically.
Intervention effect Shoot-root ratio did not change with density at a given growth stage.
Association Xianyu335 was more suited to high density than Zhengdan958 under the tested conditions.
Recommendation The authors suggested raising planting density from 52500 to 82500 plants/ha in North-east maize production.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Extra CO[sub 2] influenced fine root dry weight density more than root length density.

Taxon: soybeanGlycine maxt0
Treatment: extra CO[sub 2]e0
Outcome: root dry weight densitye0
Comparator: root length densitye0

Not reportedDirection

Verbatim

e0
“extra CO[sub 2] influenced root dry weight density more so than root length density”
✓ located verbatim in the source · abstract, characters 1462–1545

t0
“soybean and sorghum”
✓ located verbatim in the source · title, characters 45–64

Title

Effects of elevated atmospheric CO[sub 2] on soybean and sorghum root growth

H. H. Rogers; Stephen A. Prior; G. Brett Runion OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) 1993

Other claims from this paper (8)

Intervention effect Elevated CO[sub 2] significantly increased root length, dry weight and tissue density, except root number.
Intervention effect Elevated CO[sub 2] increased soybean nodule number.
Intervention effect Elevated CO[sub 2] had no effect on soybean nodule dry weight.
Intervention effect Elevated CO[sub 2] increased root dry weight more than root length.
Intervention effect Elevated CO[sub 2] increased vertical pull resistance.
Association Several root variables showed CO[sub 2] by species interactions, with greater differences between CO[sub 2] levels in sorghum.
Observation Under elevated CO[sub 2], root dry weight density tended to be greater in the top 15 cm, but not lower soil profile.
Observation Fine root measures showed few CO[sub 2] by species interactions.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Stover amount explained variation in root length density and root dry weight density.

Taxon: maizeZea mayse0
Treatment: stovere0
Outcome: root length density and root dry weight densitye0

Not reportedDirection

Verbatim

e0
“Amount of stover to the field explained the variation in root length density and root dry weight density in double cropping of winter wheat and summer maize.”
✓ located verbatim in the source · abstract, characters 91–248

Title

Response of Maize Root Growth to Residue Management Strategies

Fei Gao; Bin Zhao; Shuting Dong; et al. Agronomy Journal 2017. doi:10.2134/agronj2017.06.0307

Other claims from this paper (9)

Intervention effect SR increased maize root fresh weight by 19.4% relative to CK.
Intervention effect SR increased maize root dry weight by 18.5% relative to CK.
Intervention effect SR increased root length density by 13.7% relative to CK.
Intervention effect SR increased root surface area density by 29.4% relative to CK.
Intervention effect SR increased summer maize yield by 15.1% relative to CK.
Intervention effect Half SR increased summer maize yield by 17.1% relative to CK.
Intervention effect Half SR significantly increased RLD, RSAD and RDWD relative to SR.
Intervention effect Half SR significantly increased root length relative to SR.
Intervention effect Moderate straw return had the greatest effect on maize root growth and development.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Root restriction reduced cotton root length, volume and mass density.

Taxon: cottonGossypium hirsutumt0
Treatment: root restrictione0
Outcome: root length density (RLD), root volume density (RVD), root mass density (RMD)e0
Direction: reducede0
Comparator: no‐root‐restriction treatmente1

Verbatim

e0
“root restriction reduced root length density (RLD), root volume density (RVD), root mass density (RMD)”
✓ located verbatim in the source · abstract, characters 899–1001

t0
“cotton”
✓ located verbatim in the source · title, characters 12–18

e1
“120 cm (no‐root‐restriction treatment)”
✓ located verbatim in the source · abstract, characters 535–573

Title

Response of cotton root growth and yield to root restriction under various water and nitrogen regimes

Hong Hai Luo; Xian Ping Tao; Yuan Yuan Hu; et al. Journal of Plant Nutrition and Soil Science 2015. doi:10.1002/jpln.201400264

Other claims from this paper (6)

Intervention effect Root restriction reduced SOD and NR activity.
Intervention effect Root restriction reduced total plant biomass and root to shoot ratio.
Intervention effect Root restriction increased aboveground biomass and yield.
Association Root traits and root to shoot ratio declined across water and nitrogen regimes from W0N0 to W1N1 in both rooting treatments.
Association SOD and NR activity, aboveground biomass and seed yield showed the opposite order across water and nitrogen regimes.
Mechanism With adequate water and nitrogen, authors interpreted root restriction as increasing root activity and photosynthate availability to shoots.

“Root density”

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