Abstract
Abstract Guava is an important edible and economic fruit crop distributed worldwide. It is widely infested with root knot nematode, Meloidogyne enterolobii which plays a vital role in causing economic losses. Several management strategies were performed to enhance the health status of guava and also to reduce root knot nematode infestation. Among the different aspects, application of plant growth regulators on guava plants under nursery conditions against root knot nematode, M. enterolobii was performed. The guava plants were treated with Salicylic acid (100 ppm), Jasmonic acid (100 ppm), and Indole 3-Butyric Acid (1000 ppm) alone and in combination of two and three. The result of this study revealed that IBA at 1,000 ppm alone (T3) and combined application of plant growth regulators viz., (T 4 ) – Salicylic acid (100 ppm) + Jasmonic acid (100 ppm) + Indole 3-Butyric Acid (1,000 ppm) showed reduction in the nematode population and establishment of new roots (compensatory) and tertiary roots. The combined application of PGRs also increased the Plant height, root length, chlorophyll index, photosynthetic rate, transpiration rate, stomatal conductance, and chlorophyll fluorescence. The activity of various enzymes like total phenols, peroxidase, polyphenol oxidase, acid phosphatase, and phenylalanine ammonia lyase were influenced and developed resistance against root knot nematode, M. enterolobii. Under field conditions, application of Pochonia chlamydosporia and Purpureocilium lilacinum reduced the nematode infestation besides increasing the yield attributes of guava plants.
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Claims 11
Claim · model-written summary
IBA alone reduced nematode population in guava.
- Taxon
- guava
Psidium guajavat0 - Treatment
- IBA at 1,000 ppm alone (T3)e0
- Interactor
- Meloidogyne enterolobii
_5384315.jpg?width=60)
Meloidogyne enterolobiit0pathogen - Outcome
- nematode populatione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_5384315.jpg?width=500)
Verbatim
e0“IBA at 1,000 ppm alone (T3) and combined application of plant growth regulators viz., (T 4 ) – Salicylic acid (100 ppm) + Jasmonic acid (100 ppm) + Indole 3-Butyric Acid (1,000 ppm) showed reduction in the nematode population and establishment of new roots (compensatory) and tertiary roots”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Combined growth regulators reduced nematode population.
- Taxon
- guavaPsidium guajavat0
- Treatment
- combined application of plant growth regulatorse0
- Interactor
- Meloidogyne enterolobiiMeloidogyne enterolobiit0pathogen
- Outcome
- nematode populatione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combined application of plant growth regulators viz., (T 4 ) – Salicylic acid (100 ppm) + Jasmonic acid (100 ppm) + Indole 3-Butyric Acid (1,000 ppm) showed reduction in the nematode population”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
IBA alone promoted establishment of new and tertiary roots.
- Taxon
- guavaPsidium guajavat0
- Treatment
- IBA at 1,000 ppm alone (T3)e0
- Outcome
- establishment of new roots (compensatory) and tertiary rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IBA at 1,000 ppm alone (T3) and combined application of plant growth regulators viz., (T 4 ) – Salicylic acid (100 ppm) + Jasmonic acid (100 ppm) + Indole 3-Butyric Acid (1,000 ppm) showed reduction in the nematode population and establishment of new roots (compensatory) and tertiary roots”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Combined growth regulators promoted new and tertiary roots.
- Taxon
- guavaPsidium guajavat0
- Treatment
- combined application of plant growth regulatorse0
- Outcome
- establishment of new roots (compensatory) and tertiary rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combined application of plant growth regulators viz., (T 4 ) – Salicylic acid (100 ppm) + Jasmonic acid (100 ppm) + Indole 3-Butyric Acid (1,000 ppm) showed reduction in the nematode population and establishment of new roots (compensatory) and tertiary roots”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Combined regulators increased plant height and root length.
- Taxon
- guavaPsidium guajavat0
- Treatment
- combined application of PGRse0
- Outcome
- Plant height, root lengthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of PGRs also increased the Plant height, root length, chlorophyll index, photosynthetic rate, transpiration rate, stomatal conductance, and chlorophyll fluorescence”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Combined regulators increased chlorophyll index, photosynthetic rate and transpiration rate.
- Taxon
- guavaPsidium guajavat0
- Treatment
- combined application of PGRse0
- Outcome
- chlorophyll index, photosynthetic rate, transpiration ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of PGRs also increased the Plant height, root length, chlorophyll index, photosynthetic rate, transpiration rate, stomatal conductance, and chlorophyll fluorescence”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Combined regulators increased stomatal conductance and chlorophyll fluorescence.
- Taxon
- guavaPsidium guajavat0
- Treatment
- combined application of PGRse0
- Outcome
- stomatal conductance, and chlorophyll fluorescencee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of PGRs also increased the Plant height, root length, chlorophyll index, photosynthetic rate, transpiration rate, stomatal conductance, and chlorophyll fluorescence”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Regulators influenced defence enzyme activities and resistance.
- Taxon
- guavaPsidium guajavat0
- Interactor
- M. enterolobiiMeloidogyne enterolobiie0pathogen
- Outcome
- activity of various enzymese0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of various enzymes like total phenols, peroxidase, polyphenol oxidase, acid phosphatase, and phenylalanine ammonia lyase were influenced and developed resistance against root knot nematode, M. enterolobii”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Field application of Pochonia chlamydosporia reduced nematode infestation.
- Taxon
- guavaPsidium guajavae0
- Treatment
- application of Pochonia chlamydosporiae0
- Interactor
- Meloidogyne enterolobiiMeloidogyne enterolobiit0pathogen
- Second interactor
- Pochonia chlamydosporiaPochonia chlamydosporiae0biocontrol_agent
- Outcome
- nematode infestatione0
- Direction
- reducede0
- Setting
- field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under field conditions, application of Pochonia chlamydosporia and Purpureocilium lilacinum reduced the nematode infestation besides increasing the yield attributes of guava plants”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Field application of Purpureocilium lilacinum reduced nematode infestation.
- Taxon
- guavaPsidium guajavae0
- Treatment
- application of Pochonia chlamydosporia and Purpureocilium lilacinume0
- Interactor
- Meloidogyne enterolobiiMeloidogyne enterolobiit0pathogen
- Second interactor
- Purpureocilium lilacinume0biocontrol_agent
- Outcome
- nematode infestatione0
- Direction
- reducede0
- Setting
- field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under field conditions, application of Pochonia chlamydosporia and Purpureocilium lilacinum reduced the nematode infestation besides increasing the yield attributes of guava plants”
t0“guava root knot nematode, Meloidogyne enterolobii”
Claim · model-written summary
Field application of the biocontrol agents increased guava yield attributes.
- Taxon
- guavaPsidium guajavae0
- Treatment
- application of Pochonia chlamydosporia and Purpureocilium lilacinume0
- Outcome
- yield attributes of guava plantse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under field conditions, application of Pochonia chlamydosporia and Purpureocilium lilacinum reduced the nematode infestation besides increasing the yield attributes of guava plants”
The same questions in other papers
indole-3-butyric acid · growth · Psidium guajava (guava)Results differ
35 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
34 papers more in this group
See all 38 papers →indole-3-butyric acid · Meloidogyne enterolobii · Psidium guajava (guava)Results agree
1 paper in the same direction as this paper
- positive
Pochonia chlamydosporia · Meloidogyne enterolobii · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- positive
- positive
class · growth · Psidium guajava (guava)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
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.