Abstract
The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra [Abelmoschus esculentus (L) Moench], causing root galling and yield losses in commercial and local consumption cultivars. Use of expensive, toxic nematicides needs to be replaced with genetic improvement of plants for resistance to nematodes. A study was conducted to determine pathogenicity of root knot nematode on okra accessions and their degree of resistance to the nematode. Okra accessions obtained form the National Centre for Genetic Resources and Biotechnology, Ibadan, Oyo State, Nigeria, were exposed to 0 or 5000 eggs of M. incognita per plant. Two seeds from each accession were sown in pots containing a sterilized sandy loam soil and thinned to one plant per pot before inoculation with nematodes. Data were collected on plant height, shoot weight, fruit weight, numbers of galls, and nematode population in roots and soil. Reductions in plant height due to M. incognita infection ranged from 13.69% to 75.64%, shoot weight from 13.69% and 67.24%, and fruit weight from 12.96% to 53.29%. Accessions NG/TO/JUN/09/007, NHGB/10/048, NG/AA/SEP/09/040, NHGB/09/057, and NG/SA/DEC/07/0528 were tolerant to M. incognita. Accessions CEN/009, NG/AA/SEP/09/038, NG/SA/DEC/07/498, and NHGB/09/055 were susceptible to M. incognita infection. Resistance to root knot nematode may be able to be achieved through breeding.
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Claims 13
Claim · model-written summary
Meloidogyne incognita reduced okra plant height by 13.69% to 75.64%.
- Taxon
- okra
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Abelmoschus esculentuse0 - Treatment
- M. incognita infectione1
- Interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae1pest - Outcome
- plant heighte1
- Direction
- Reductionse1
- Value
- 13.69% to 75.64%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e1“Reductions in plant height due to M. incognita infection ranged from 13.69% to 75.64%”
Claim · model-written summary
Meloidogyne incognita reduced okra shoot weight by 13.69% to 67.24%.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- M. incognita infectione1
- Interactor
- M. incognitaMeloidogyne incognitae1pest
- Outcome
- shoot weighte2
- Direction
- decreaseinferrede1
- Value
- 13.69% and 67.24%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e1“Reductions in plant height due to M. incognita infection ranged from 13.69% to 75.64%”
e2“shoot weight from 13.69% and 67.24%”
Claim · model-written summary
Meloidogyne incognita reduced okra fruit weight by 12.96% to 53.29%.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- M. incognita infectione1
- Interactor
- M. incognitaMeloidogyne incognitae1pest
- Outcome
- fruit weighte3
- Direction
- decreaseinferrede1
- Value
- 12.96% to 53.29%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e1“Reductions in plant height due to M. incognita infection ranged from 13.69% to 75.64%”
e3“fruit weight from 12.96% to 53.29%”
Claim · model-written summary
Okra accession NG/TO/JUN/09/007 was tolerant to Meloidogyne incognita.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NG/TO/JUN/09/007e4
- Interactor
- M. incognitaMeloidogyne incognitae4pest
- Outcome
- tolerant to M. incognitae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e4“Accessions NG/TO/JUN/09/007, NHGB/10/048, NG/AA/SEP/09/040, NHGB/09/057, and NG/SA/DEC/07/0528 were tolerant to M. incognita”
Claim · model-written summary
Okra accession NHGB/10/048 was tolerant to Meloidogyne incognita.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NHGB/10/048e4
- Interactor
- M. incognitaMeloidogyne incognitae4pest
- Outcome
- tolerant to M. incognitae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e4“Accessions NG/TO/JUN/09/007, NHGB/10/048, NG/AA/SEP/09/040, NHGB/09/057, and NG/SA/DEC/07/0528 were tolerant to M. incognita”
Claim · model-written summary
Okra accession NG/AA/SEP/09/040 was tolerant to Meloidogyne incognita.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NG/AA/SEP/09/040e4
- Interactor
- M. incognitaMeloidogyne incognitae4pest
- Outcome
- tolerant to M. incognitae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e4“Accessions NG/TO/JUN/09/007, NHGB/10/048, NG/AA/SEP/09/040, NHGB/09/057, and NG/SA/DEC/07/0528 were tolerant to M. incognita”
Claim · model-written summary
Okra accession NHGB/09/057 was tolerant to Meloidogyne incognita.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NHGB/09/057e4
- Interactor
- M. incognitaMeloidogyne incognitae4pest
- Outcome
- tolerant to M. incognitae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e4“Accessions NG/TO/JUN/09/007, NHGB/10/048, NG/AA/SEP/09/040, NHGB/09/057, and NG/SA/DEC/07/0528 were tolerant to M. incognita”
Claim · model-written summary
Okra accession NG/SA/DEC/07/0528 was tolerant to Meloidogyne incognita.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NG/SA/DEC/07/0528e4
- Interactor
- M. incognitaMeloidogyne incognitae4pest
- Outcome
- tolerant to M. incognitae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e4“Accessions NG/TO/JUN/09/007, NHGB/10/048, NG/AA/SEP/09/040, NHGB/09/057, and NG/SA/DEC/07/0528 were tolerant to M. incognita”
Claim · model-written summary
Okra accession CEN/009 was susceptible to Meloidogyne incognita infection.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- CEN/009e5
- Interactor
- M. incognitaMeloidogyne incognitae5pest
- Outcome
- susceptible to M. incognita infectione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e5“Accessions CEN/009, NG/AA/SEP/09/038, NG/SA/DEC/07/498, and NHGB/09/055 were susceptible to M. incognita infection”
Claim · model-written summary
Okra accession NG/AA/SEP/09/038 was susceptible to Meloidogyne incognita infection.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NG/AA/SEP/09/038e5
- Interactor
- M. incognitaMeloidogyne incognitae5pest
- Outcome
- susceptible to M. incognita infectione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e5“Accessions CEN/009, NG/AA/SEP/09/038, NG/SA/DEC/07/498, and NHGB/09/055 were susceptible to M. incognita infection”
Claim · model-written summary
Okra accession NG/SA/DEC/07/498 was susceptible to Meloidogyne incognita infection.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NG/SA/DEC/07/498e5
- Interactor
- M. incognitaMeloidogyne incognitae5pest
- Outcome
- susceptible to M. incognita infectione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e5“Accessions CEN/009, NG/AA/SEP/09/038, NG/SA/DEC/07/498, and NHGB/09/055 were susceptible to M. incognita infection”
Claim · model-written summary
Okra accession NHGB/09/055 was susceptible to Meloidogyne incognita infection.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- NHGB/09/055e5
- Interactor
- M. incognitaMeloidogyne incognitae5pest
- Outcome
- susceptible to M. incognita infectione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e5“Accessions CEN/009, NG/AA/SEP/09/038, NG/SA/DEC/07/498, and NHGB/09/055 were susceptible to M. incognita infection”
Claim · model-written summary
Resistance to root knot nematode in okra may be achieved through breeding.
- Taxon
- okraAbelmoschus esculentuse0
- Outcome
- Resistance to root knot nematodee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is an important pest of okra”
e6“Resistance to root knot nematode may be able to be achieved through breeding”
The same questions in other papers
Meloidogyne incognita · yield · Abelmoschus esculentus (okra)Results agree
2 papers in the same direction as this paper
- negative
- negative
Meloidogyne incognita · growth · Abelmoschus esculentus (okra)Results agree
5 papers in the same direction as this paper
- negative
- negative
- negative
2 papers more in this group
See all 6 papers →infection · growth · Abelmoschus esculentus (okra)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
infection · yield · Abelmoschus esculentus (okra)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
2 papers more in this group
See all 6 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.