Paper · 2022 · Bangladesh Journal of Botany

Growth and Yield Variability in Rice Owing to Root Knot Nematode (Meloidogyne Graminicola) At Different Plant Age

I Pradhan; RK Panda; JK Mahalik; et al.

8
claims
16
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

Meloidogyne graminicola (nematode) mostly attacks young roots of plants; hence, age of host becomes a predominant factor in infection and pathogenesis. A pot experiment was conducted in the net house condition during kharif, 2018 in complete randomized design to find out the changes in growth and yield parameters of rice cv. Naveen due to inoculation of M. graminicola at different plant age. The nematode infested rice plants showed chlorosis, stunting and characteristic terminal galls on the roots which ultimately resulted in severe reduction in growth, unfilled spikelets, reduction in tiller development and other growth attributes over control. Nematode inoculation at early crop stage retarded the plant growth and yield attributes by reducing the rice yield up to 57.4%. The maximum percentage of reduction in plant height (19.8%), tiller number (39.6%), dry weight of shoot (43.6%), dry weight of root (45.6%) and total biomass (49.6%) was observed in the plants inoculated at two weeks after sowing. Bangladesh J. Bot. 51(3): 411-416, 2022 (September)

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Claims 8

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Infested rice had chlorosis, stunting and terminal root galls.

Organ / stage
rootse0
Interactor
Meloidogyne graminicolaMeloidogyne graminicolat0pathogen
Outcome
chlorosis, stunting and characteristic terminal gallse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The nematode infested rice plants showed chlorosis, stunting and characteristic terminal galls on the roots”

✓ located verbatim in the source · abstract, characters 395–502 · show in text ↑
t0

“Meloidogyne Graminicola”

✓ located verbatim in the source · title, characters 66–89 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nematode infestation reduced rice growth, filled spikelets and tiller development compared with control.

Treatment
Root Knot Nematodet0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
growth, unfilled spikelets, reduction in tiller developmente0
Direction
reductione0
Comparator
controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“resulted in severe reduction in growth, unfilled spikelets, reduction in tiller development and other growth attributes over control”

✓ located verbatim in the source · abstract, characters 520–652 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Early nematode inoculation reduced rice yield by up to 57.4%.

Treatment
Nematode inoculation at early crop stagee0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
rice yielde0
Direction
reducinge0
Value
57.4%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Nematode inoculation at early crop stage retarded the plant growth and yield attributes by reducing the rice yield up to 57.4%”

✓ located verbatim in the source · abstract, characters 654–780 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculation two weeks after sowing reduced plant height by 19.8%.

Treatment
inoculated at two weeks after sowinge0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
plant heighte0
Direction
reductione0
Value
19.8%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The maximum percentage of reduction in plant height (19.8%), tiller number (39.6%), dry weight of shoot (43.6%), dry weight of root (45.6%) and total biomass (49.6%) was observed in the plants inoculated at two weeks after sowing”

✓ located verbatim in the source · abstract, characters 782–1011 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculation two weeks after sowing reduced tiller number by 39.6%.

Treatment
inoculated at two weeks after sowinge0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
tiller numbere0
Direction
reductione0
Value
39.6%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The maximum percentage of reduction in plant height (19.8%), tiller number (39.6%), dry weight of shoot (43.6%), dry weight of root (45.6%) and total biomass (49.6%) was observed in the plants inoculated at two weeks after sowing”

✓ located verbatim in the source · abstract, characters 782–1011 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculation two weeks after sowing reduced dry weight of shoot by 43.6%.

Treatment
inoculated at two weeks after sowinge0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
dry weight of shoote0
Direction
reductione0
Value
43.6%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The maximum percentage of reduction in plant height (19.8%), tiller number (39.6%), dry weight of shoot (43.6%), dry weight of root (45.6%) and total biomass (49.6%) was observed in the plants inoculated at two weeks after sowing”

✓ located verbatim in the source · abstract, characters 782–1011 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculation two weeks after sowing reduced dry weight of root by 45.6%.

Treatment
inoculated at two weeks after sowinge0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
dry weight of roote0
Direction
reductione0
Value
45.6%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The maximum percentage of reduction in plant height (19.8%), tiller number (39.6%), dry weight of shoot (43.6%), dry weight of root (45.6%) and total biomass (49.6%) was observed in the plants inoculated at two weeks after sowing”

✓ located verbatim in the source · abstract, characters 782–1011 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculation two weeks after sowing reduced total biomass by 49.6%.

Treatment
inoculated at two weeks after sowinge0
Interactor
Meloidogyne GraminicolaMeloidogyne graminicolat0pathogen
Outcome
total biomasse0
Direction
reductione0
Value
49.6%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The maximum percentage of reduction in plant height (19.8%), tiller number (39.6%), dry weight of shoot (43.6%), dry weight of root (45.6%) and total biomass (49.6%) was observed in the plants inoculated at two weeks after sowing”

✓ located verbatim in the source · abstract, characters 782–1011 · show in text ↑
t0

“Rice Owing to Root Knot Nematode (Meloidogyne Graminicola)”

✓ located verbatim in the source · title, characters 32–90 · show in text ↑

inoculation · Meloidogyne graminicola · Oryza sativa (rice)Positive and negative results

13 papers: 8 positive, 5 negative or no effect

4 papers in the same direction as this paper · 8 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 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.