Abstract
Backcross hybrids between the important forage legume white clover (Trifolium repens L.), which is stoloniferous, and the related rhizomatous species Caucasian clover (T. ambiguum M. Bieb), have been produced using white clover as the recurrent parent. The effect of drought on the parental species and two generations of backcrosses were studied in a short-term glasshouse experiment under three intensities of drought. Plants of Caucasian clover maintained a higher leaf relative water content and leaf water potential than white clover at comparable levels of drought, with the response of the backcrosses generally intermediate between the parents. Severe drought significantly reduced stolon growth rate and leaf development rate of white clover compared to the control, well-watered treatment, whilst differences between these two treatments in the backcross hybrids were relatively small. The differences between parental species and the backcrosses in root morphology were studied in 1m long vertical pipes. The parental species differed in root weight distribution, with root weight of Caucasian clover significantly greater than white clover in the 0.1 m to 0.5 m root zone. The backcrosses exhibited root characteristics intermediate between the parents. The extent to which these differences influence the capacity to tolerate drought is discussed.
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Claims 6
Claim · model-written summary
Caucasian clover maintained higher leaf relative water content than white clover at comparable drought levels, with backcrosses generally intermediate.
- Taxon
- Caucasian clover
Trifolium ambiguume0 - Treatment
- droughte0
- Outcome
- leaf relative water contente0
- Direction
- highere0
- Qualifier
- backcrosses generally intermediate between the parentse0
- Comparator
- white clovere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of Caucasian clover maintained a higher leaf relative water content and leaf water potential than white clover at comparable levels of drought, with the response of the backcrosses generally intermediate between the parents”
Claim · model-written summary
Caucasian clover maintained higher leaf water potential than white clover at comparable drought levels, with backcrosses generally intermediate.
- Taxon
- Caucasian cloverTrifolium ambiguume0
- Treatment
- droughte0
- Outcome
- leaf water potentiale0
- Direction
- highere0
- Qualifier
- backcrosses generally intermediate between the parentse0
- Comparator
- white clovere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants of Caucasian clover maintained a higher leaf relative water content and leaf water potential than white clover at comparable levels of drought, with the response of the backcrosses generally intermediate between the parents”
Claim · model-written summary
Severe drought significantly reduced white clover stolon growth rate relative to well-watered treatment; the backcross difference was relatively small.
- Taxon
- white clover
Trifolium repense0 - Treatment
- Severe droughte0
- Outcome
- stolon growth ratee0
- Direction
- reducede0
- Qualifier
- differences between these two treatments in the backcross hybrids were relatively smalle0
- Comparator
- control, well-watered treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severe drought significantly reduced stolon growth rate and leaf development rate of white clover compared to the control, well-watered treatment, whilst differences between these two treatments in the backcross hybrids were relatively small”
Claim · model-written summary
Severe drought significantly reduced white clover leaf development rate relative to well-watered treatment; the backcross difference was relatively small.
- Taxon
- white cloverTrifolium repense0
- Treatment
- Severe droughte0
- Outcome
- leaf development ratee0
- Direction
- reducede0
- Qualifier
- differences between these two treatments in the backcross hybrids were relatively smalle0
- Comparator
- control, well-watered treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severe drought significantly reduced stolon growth rate and leaf development rate of white clover compared to the control, well-watered treatment, whilst differences between these two treatments in the backcross hybrids were relatively small”
Claim · model-written summary
Caucasian clover had significantly greater root weight than white clover in the 0.1 m to 0.5 m root zone.
- Taxon
- Caucasian cloverTrifolium ambiguume0
- Organ / stage
- roote0
- Outcome
- root weighte0
- Direction
- greatere0
- Qualifier
- 0.1 m to 0.5 m root zonee0
- Comparator
- white clovere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root weight of Caucasian clover significantly greater than white clover in the 0.1 m to 0.5 m root zone”
Claim · model-written summary
Backcrosses exhibited root characteristics intermediate between their parents.
- Taxon
- White CloverTrifolium repenst0
- Material
- backcrossese0
- Outcome
- root characteristics intermediate between the parentse0
- Direction
- intermediatee0
- Comparator
- parentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The backcrosses exhibited root characteristics intermediate between the parents”
t0“Interspecific Hybrids between White Clover (T. repens L.) and Caucasian Clover (T. ambiguum M. Bieb.)”
The same questions in other papers
drought · growth · Trifolium repens (white clover)Results differ
20 papers in the same direction as this paper · 7 in the opposite direction
- positive
- negative
- negative
24 papers more in this group
See all 28 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.