Abstract
A pot experiment was carried out in the net house of Department of Nematology, Assam Agricultural University, Jorhat, to study the pathogenicity of root-knot nematode, Meloidogyne incognita, on tuberose. The study found that as the inoculum level of M. incognita increased from 10 to 10,000 second-stage juveniles (J2) per pot (containing 1 kg of sterilized soil), all plant growth parameters of tuberose decreased progressively. At the highest inoculum level, the plants became severely stunted, chlorotic, and produced very few bulblets. It was noted that at the highest inoculum level, the root systems were significantly reduced, with larger and mostly coalescent galls. The treatments with no nematode (check and associated check) were free from galls and eggmasses. An initial inoculum level of 100 J2 of M.incognita per kg of soil caused significant reduction in all growth parameters and proved to be pathogenic to the tuberose plants. The number of galls and eggmasses increased gradually in the plants with an initial inoculum level of 10 to 1000 J2 of M.incognita per kg of soil, but it declined at highest inoculum level of 10,000 J2 per kg of soil. The experiment also recorded the variation in nematode population in the soil as well as their reproductive rates. These findings can be used to develop effective, targeted methods for minimizing the damage caused by root-knot nematode in tuberose crops.
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Claims 7
Claim · model-written summary
Increasing M. incognita inoculum from 10 to 10,000 J2 per pot progressively decreased all tuberose plant growth parameters.
- Taxon
- Polianthes tuberosa L.
Agave amicat0 - Treatment
- inoculum level of M. incognita increased from 10 to 10,000 second-stage juveniles (J2) per pote2
- Interactor
- Meloidogyne incognita
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Meloidogyne incognitae1pathogen - Outcome
- plant growth parameterse2
- Direction
- decreasede2
- Setting
- net housee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“pathogenicity of root-knot nematode, Meloidogyne incognita, on tuberose”
e2“as the inoculum level of M. incognita increased from 10 to 10,000 second-stage juveniles (J2) per pot (containing 1 kg of sterilized soil), all plant growth parameters of tuberose decreased progressively”
e3“A pot experiment was carried out in the net house”
Claim · model-written summary
At the highest inoculum level, the root systems of tuberose were significantly reduced.
- Taxon
- Polianthes tuberosa L.Agave amicat0
- Treatment
- highest inoculum levele1
- Outcome
- root systemse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“at the highest inoculum level, the root systems were significantly reduced”
Claim · model-written summary
At the highest inoculum level, tuberose plants became severely stunted and chlorotic and produced very few bulblets.
- Taxon
- Polianthes tuberosa L.Agave amicat0
- Treatment
- highest inoculum levele1
- Outcome
- bulbletse1
- Qualifier
- severely stunted, chlorotice1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“At the highest inoculum level, the plants became severely stunted, chlorotic, and produced very few bulblets”
Claim · model-written summary
An initial inoculum of 100 J2 of M. incognita per kg soil significantly reduced all tuberose growth parameters.
- Taxon
- Polianthes tuberosa L.Agave amicat0
- Treatment
- initial inoculum level of 100 J2 of M.incognita per kg of soile1
- Interactor
- M.incognitaMeloidogyne incognitae1pathogen
- Outcome
- all growth parameterse1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“An initial inoculum level of 100 J2 of M.incognita per kg of soil caused significant reduction in all growth parameters”
Claim · model-written summary
Galls and eggmasses increased gradually with inoculum levels from 10 to 1000 J2 per kg soil.
- Taxon
- Polianthes tuberosa L.Agave amicat0
- Treatment
- initial inoculum level of 10 to 1000 J2 of M.incognita per kg of soile1
- Outcome
- number of galls and eggmassese1
- Direction
- increased graduallye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“The number of galls and eggmasses increased gradually in the plants with an initial inoculum level of 10 to 1000 J2 of M.incognita per kg of soil”
Claim · model-written summary
Galls and eggmasses declined at the highest inoculum level of 10,000 J2 per kg soil.
- Taxon
- Polianthes tuberosa L.Agave amicat0
- Treatment
- highest inoculum level of 10,000 J2 per kg of soile2
- Outcome
- number of galls and eggmassese1
- Direction
- declinede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“The number of galls and eggmasses”
e2“but it declined at highest inoculum level of 10,000 J2 per kg of soil”
Claim · model-written summary
Control treatments without nematodes were free from galls and eggmasses.
- Taxon
- Polianthes tuberosa L.Agave amicat0
- Outcome
- galls and eggmassese1
- Qualifier
- no nematode (check and associated check)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tuberose (Polianthes tuberosa L.)”
e1“The treatments with no nematode (check and associated check) were free from galls and eggmasses”
The same questions in other papers
inoculation · growth · Agave amica (tuberose)Positive and negative results
8 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.