Abstract
SummaryThe rooting abilities of the filamentous virus infected and the virus-free cuttings of sweet potato (Ipomoea batatas Poir.) were compared, with an anatomical comparison of the root. The diameters of the pith and the vascular bundle cylinder at the node of the virus-free cutting were larger than in those of virus infected ones. Thicker and more vigorous roots were initiated in the virus-free cutting. The diameter of the central cylinder and the thickness of the cortical layer of the root were larger in the virus-free cutting than in the virus infected one. Larger and more numerous vessels developed, and larger and more distinct meristematic tissues surrounding the protophloem poles also developed in a fan form in the root of the virus-free cutting. The weight of the leaf and stem of the plant 80.d after planting in the field were larger in the virus-free cutting than in the virus infected cutting. From these results, the following assumptions on roots in the virus-free cutting can be made. Thicker roots with larger vessels and thicker meristematic tissues develop in the virus-free cutting because the meristematic activity is high in the tissues in the vicinity of the vascular bundle cylinder at the node, due to the recovery of normal physiological function by removal of the virus. There are fewer roots in the virus-free cutting because the smaller total area of the root is sufficient to absorb the nutrient elements owing to superior development of the vessels and meristematic tissues in the root. In the field, the larger weight of the leaf and stem in the virus-free cutting is caused by the high absorption ability of nutrient elements from the root.
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Claims 9
Claim · model-written summary
Thicker and more vigorous roots were initiated in virus-free sweet potato cuttings.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast1 - Treatment
- virus-free cuttinge1
- Outcome
- rootse1
- Direction
- Thicker and more vigorouse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e1“Thicker and more vigorous roots were initiated in the virus-free cutting”
Claim · model-written summary
Pith and vascular bundle cylinder diameters at the node were larger in virus-free cuttings.
- Taxon
- sweet potatoIpomoea batatast1
- Treatment
- virus-free cuttinge2
- Outcome
- diameters of the pith and the vascular bundle cylindere2
- Direction
- largere2
- Qualifier
- at the nodee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e2“The diameters of the pith and the vascular bundle cylinder at the node of the virus-free cutting were larger”
Claim · model-written summary
Larger and more numerous vessels developed in the roots of virus-free cuttings.
- Taxon
- sweet potatoIpomoea batatast1
- Organ / stage
- roote3
- Treatment
- virus-free cuttinge3
- Outcome
- vesselse3
- Direction
- Larger and more numerouse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e3“Larger and more numerous vessels developed, and larger and more distinct meristematic tissues surrounding the protophloem poles also developed in a fan form in the root of the virus-free cutting”
Claim · model-written summary
Meristematic tissues around the protophloem poles were larger and more distinct in roots of virus-free cuttings.
- Taxon
- sweet potatoIpomoea batatast1
- Organ / stage
- roote3
- Treatment
- virus-free cuttinge3
- Outcome
- meristematic tissuese3
- Direction
- larger and more distincte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e3“Larger and more numerous vessels developed, and larger and more distinct meristematic tissues surrounding the protophloem poles also developed in a fan form in the root of the virus-free cutting”
Claim · model-written summary
Central cylinder diameter and cortical layer thickness of roots were larger in virus-free cuttings than in virus-infected ones.
- Taxon
- sweet potatoIpomoea batatast1
- Organ / stage
- roote5
- Treatment
- virus-free cuttinge5
- Outcome
- diameter of the central cylinder and the thickness of the cortical layere5
- Direction
- largere5
- Comparator
- virus infected onee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e5“The diameter of the central cylinder and the thickness of the cortical layer of the root were larger in the virus-free cutting than in the virus infected one”
Claim · model-written summary
In the field, leaf and stem weight at 80 days after planting was larger in virus-free cuttings than in virus-infected cuttings.
- Taxon
- sweet potatoIpomoea batatast1
- Treatment
- virus-free cuttinge6
- Outcome
- weight of the leaf and steme6
- Direction
- largere6
- Qualifier
- 80.d after plantinge6
- Comparator
- virus infected cuttinge6
- Setting
- in the fielde6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e6“The weight of the leaf and stem of the plant 80.d after planting in the field were larger in the virus-free cutting than in the virus infected cutting”
Claim · model-written summary
Virus-free cuttings have fewer roots, which the authors attribute to superior vessel and meristem development.
- Taxon
- sweet potatoIpomoea batatast1
- Organ / stage
- roote7
- Outcome
- fewer rootse7
- Qualifier
- superior development of the vessels and meristematic tissuese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e7“There are fewer roots in the virus-free cutting because the smaller total area of the root is sufficient to absorb the nutrient elements owing to superior development of the vessels and meristematic tissues in the root”
Claim · model-written summary
The larger leaf and stem weight of virus-free cuttings is attributed to higher nutrient absorption from the root.
- Taxon
- sweet potatoIpomoea batatast1
- Treatment
- virus-free cuttinge4
- Outcome
- larger weight of the leaf and steme4
- Qualifier
- high absorption ability of nutrient elements from the roote4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e4“In the field, the larger weight of the leaf and stem in the virus-free cutting is caused by the high absorption ability of nutrient elements from the root”
Claim · model-written summary
Thicker roots develop in virus-free cuttings because virus removal restores normal physiological function.
- Taxon
- sweet potatoIpomoea batatast1
- Organ / stage
- roote0
- Outcome
- Thicker rootse0
- Qualifier
- recovery of normal physiological function by removal of the viruse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“rooting ability of virus infected and virus-free cuttings of sweet potatoes”
e0“Thicker roots with larger vessels and thicker meristematic tissues develop in the virus-free cutting because the meristematic activity is high in the tissues in the vicinity of the vascular bundle cylinder at the node, due to the recovery of normal physiological function by removal of the virus”
The same questions in other papers
pruning · growth · Ipomoea batatas (sweet potato)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- no effect
6 papers more in this group
See all 10 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.