Evidence for root contraction in white clover (Trifolium repens L.)

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Evidence for root contraction in white clover (Trifolium repens L.). / Cresswell, A.; Sackville Hamilton, N. R.; Thomas, H.; Charnock, R. B.; Cookson, A. R.; Thomas, B. J.

In: Annals of Botany, Vol. 84, No. 3, 09.1999, p. 359-369.

Research output: Contribution to journalArticlepeer-review

Harvard

Cresswell, A, Sackville Hamilton, NR, Thomas, H, Charnock, RB, Cookson, AR & Thomas, BJ 1999, 'Evidence for root contraction in white clover (Trifolium repens L.)', Annals of Botany, vol. 84, no. 3, pp. 359-369. https://doi.org/10.1006/anbo.1999.0928

APA

Cresswell, A., Sackville Hamilton, N. R., Thomas, H., Charnock, R. B., Cookson, A. R., & Thomas, B. J. (1999). Evidence for root contraction in white clover (Trifolium repens L.). Annals of Botany, 84(3), 359-369. https://doi.org/10.1006/anbo.1999.0928

Vancouver

Cresswell A, Sackville Hamilton NR, Thomas H, Charnock RB, Cookson AR, Thomas BJ. Evidence for root contraction in white clover (Trifolium repens L.). Annals of Botany. 1999 Sep;84(3):359-369. https://doi.org/10.1006/anbo.1999.0928

Author

Cresswell, A. ; Sackville Hamilton, N. R. ; Thomas, H. ; Charnock, R. B. ; Cookson, A. R. ; Thomas, B. J. / Evidence for root contraction in white clover (Trifolium repens L.). In: Annals of Botany. 1999 ; Vol. 84, No. 3. pp. 359-369.

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@article{85c8a4d75ff74aa1926f7b55fc1c60ed,
title = "Evidence for root contraction in white clover (Trifolium repens L.)",
abstract = "White clover (Trifolium repens L.) stolons become buried in the field. It was observed that this also occurred in the greenhouse where the accepted mechanisms of burial, treading by livestock and earthworm casting, did not occur. It was also observed that the crown of seedling T. repens plants become closely appressed to the soil. Experiments showed that, regardless of variety of T. repens or depth of planting, all seedling hypocotyls first lift the cotyledons clear of the soil, then 'contract' towards the soil until the cotyledons are in contact with or below the soil surface. Auxanometers were used to measure the rate and extent of this contraction and were also attached to stolen nodes in experiments which showed that stolons move downwards relative to the soil surface and that the speed and extent of this duration varied with soil type. A further experiment showed that only rooted nodes show this behaviour. The force exerted by the contraction of nodal roots was estimated experimentally as 0.21 N g(-1) fresh root. A mechanism for the root contraction, based on examination of root anatomy of seedling tap-roots and nodal roots, is suggested. These experiments provide evidence for root contraction in T. repens which may lead to stolen burial. The importance of this to T. repens as a pasture species and as a means of further improving T. repens varieties is discussed. (C) 1999 Annals of Botany Company.",
keywords = "white clover, Trifolium repens, L., stolon, seedling, burial, root, nodes, nodal, force, contractile, soil resistance, pasture, phloem, fibres, 3 HORIZONTAL STRATA, SEASONAL-VARIATION, GRAZED SWARDS, STOLONS, GROWTH",
author = "A. Cresswell and {Sackville Hamilton}, {N. R.} and H. Thomas and Charnock, {R. B.} and Cookson, {A. R.} and Thomas, {B. J.}",
note = "Cresswell, A., Sackville Hamilton, N. R., Thomas, H., Charnock, R. B., Cookson, A. R., Thomas, B. J. (1999). Evidence for root contraction in white clover (Trifolium repens L.). Annals of Botany, 84 (3), 359-369.",
year = "1999",
month = sep,
doi = "10.1006/anbo.1999.0928",
language = "English",
volume = "84",
pages = "359--369",
journal = "Annals of Botany",
issn = "0305-7364",
publisher = "Oxford University Press",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Evidence for root contraction in white clover (Trifolium repens L.)

AU - Cresswell, A.

AU - Sackville Hamilton, N. R.

AU - Thomas, H.

AU - Charnock, R. B.

AU - Cookson, A. R.

AU - Thomas, B. J.

N1 - Cresswell, A., Sackville Hamilton, N. R., Thomas, H., Charnock, R. B., Cookson, A. R., Thomas, B. J. (1999). Evidence for root contraction in white clover (Trifolium repens L.). Annals of Botany, 84 (3), 359-369.

PY - 1999/9

Y1 - 1999/9

N2 - White clover (Trifolium repens L.) stolons become buried in the field. It was observed that this also occurred in the greenhouse where the accepted mechanisms of burial, treading by livestock and earthworm casting, did not occur. It was also observed that the crown of seedling T. repens plants become closely appressed to the soil. Experiments showed that, regardless of variety of T. repens or depth of planting, all seedling hypocotyls first lift the cotyledons clear of the soil, then 'contract' towards the soil until the cotyledons are in contact with or below the soil surface. Auxanometers were used to measure the rate and extent of this contraction and were also attached to stolen nodes in experiments which showed that stolons move downwards relative to the soil surface and that the speed and extent of this duration varied with soil type. A further experiment showed that only rooted nodes show this behaviour. The force exerted by the contraction of nodal roots was estimated experimentally as 0.21 N g(-1) fresh root. A mechanism for the root contraction, based on examination of root anatomy of seedling tap-roots and nodal roots, is suggested. These experiments provide evidence for root contraction in T. repens which may lead to stolen burial. The importance of this to T. repens as a pasture species and as a means of further improving T. repens varieties is discussed. (C) 1999 Annals of Botany Company.

AB - White clover (Trifolium repens L.) stolons become buried in the field. It was observed that this also occurred in the greenhouse where the accepted mechanisms of burial, treading by livestock and earthworm casting, did not occur. It was also observed that the crown of seedling T. repens plants become closely appressed to the soil. Experiments showed that, regardless of variety of T. repens or depth of planting, all seedling hypocotyls first lift the cotyledons clear of the soil, then 'contract' towards the soil until the cotyledons are in contact with or below the soil surface. Auxanometers were used to measure the rate and extent of this contraction and were also attached to stolen nodes in experiments which showed that stolons move downwards relative to the soil surface and that the speed and extent of this duration varied with soil type. A further experiment showed that only rooted nodes show this behaviour. The force exerted by the contraction of nodal roots was estimated experimentally as 0.21 N g(-1) fresh root. A mechanism for the root contraction, based on examination of root anatomy of seedling tap-roots and nodal roots, is suggested. These experiments provide evidence for root contraction in T. repens which may lead to stolen burial. The importance of this to T. repens as a pasture species and as a means of further improving T. repens varieties is discussed. (C) 1999 Annals of Botany Company.

KW - white clover

KW - Trifolium repens, L.

KW - stolon

KW - seedling

KW - burial

KW - root

KW - nodes

KW - nodal

KW - force

KW - contractile

KW - soil resistance

KW - pasture

KW - phloem

KW - fibres

KW - 3 HORIZONTAL STRATA

KW - SEASONAL-VARIATION

KW - GRAZED SWARDS

KW - STOLONS

KW - GROWTH

UR - http://hdl.handle.net/2160/35974

U2 - 10.1006/anbo.1999.0928

DO - 10.1006/anbo.1999.0928

M3 - Article

VL - 84

SP - 359

EP - 369

JO - Annals of Botany

JF - Annals of Botany

SN - 0305-7364

IS - 3

ER -

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