Abstract
The present experiment was conducted in the Division of Crop Protection at the ICAR-Indian Institute of Horticultural Research, Bengaluru (Karnataka), India during 2022–2023 for nine months to investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava; P. guajava and the interspecific hybrid progenies. Results revealed significant variations in the growth of shoot and root parameters among the parents and hybrid progenies. Reduction in shoot and root weight was recorded in all the susceptible plants whereas, the resistant species recorded increased growth parameters of both shoot and root. In the susceptible plants inoculated with M. enterolobii a drastic reduction in shoot weight, root weight and root length were observed. However, in the resistant wild species (P. cattleianum var. cattleianum and P. cattleianum var, lucidum) the growth of shoot and root was increased as normal. In contrast, it was noticed that the root length was decreased in susceptible plants inoculated with M. enterolobii due to decomposition and deterioration of roots over three to nine months whereas, resistant wild species did not express these kinds of symptoms. Based on the shoot and root growth parameters, this study confirms that M. enterolobii is a more dangerous, devastating and virulent species compared to M. incognita. This indicates that these resistant species have the potential to exploit their resistance in guava breeding, especially the development of resistant varieties.
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Claims 7
Claim · model-written summary
Shoot and root growth parameters varied significantly among the guava parents and hybrid progenies.
- Taxon
- guava
Psidium guajavae0 - Material
- parents and hybrid progeniese1
- Outcome
- growth of shoot and root parameterse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e1“Results revealed significant variations in the growth of shoot and root parameters among the parents and hybrid progenies”
Claim · model-written summary
Shoot and root weight was reduced in the susceptible guava plants.
- Taxon
- guavaPsidium guajavae0
- Material
- susceptible plantse2
- Outcome
- shoot and root weighte2
- Direction
- Reductione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e2“Reduction in shoot and root weight was recorded in all the susceptible plants”
Claim · model-written summary
Resistant species showed increased shoot and root growth parameters.
- Taxon
- guavaPsidium guajavae0
- Material
- resistant speciese3
- Outcome
- growth parameters of both shoot and roote3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e3“the resistant species recorded increased growth parameters of both shoot and root”
Claim · model-written summary
Inoculation with M. enterolobii drastically reduced shoot weight, root weight and root length in susceptible plants.
- Taxon
- guavaPsidium guajavae0
- Material
- susceptible plantse4
- Treatment
- inoculated with M. enterolobiie4
- Interactor
- M. enterolobii
_5384315.jpg?width=60)
Meloidogyne enterolobiie4pathogen - Outcome
- shoot weight, root weight and root lengthe4
- Direction
- reductione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_5384315.jpg?width=500)
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e4“In the susceptible plants inoculated with M. enterolobii a drastic reduction in shoot weight, root weight and root length were observed”
Claim · model-written summary
Resistant wild species did not show nematode-associated symptoms.
- Taxon
- guavaPsidium guajavae0
- Material
- resistant wild speciese5
- Outcome
- symptomse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e5“resistant wild species did not express these kinds of symptoms”
Claim · model-written summary
M. enterolobii was more dangerous and virulent than M. incognita for guava shoot and root growth.
- Taxon
- guavaPsidium guajavae0
- Treatment
- M. enterolobiie6
- Interactor
- M. enterolobiiMeloidogyne enterolobiie6pathogen
- Second interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae6pathogen - Outcome
- virulente6
- Direction
- more dangerouse6
- Comparator
- M. incognitae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e6“this study confirms that M. enterolobii is a more dangerous, devastating and virulent species compared to M. incognita”
Claim · model-written summary
Resistant wild species have potential for use in guava breeding, especially for developing resistant varieties.
- Taxon
- guavaPsidium guajavae0
- Outcome
- exploit their resistance in guava breedinge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“investigate the effect of root-knot nematodes (M. incognita and M. enterolobii) on the biomass of resistant wild parent P. cattleianum, common guava”
e7“these resistant species have the potential to exploit their resistance in guava breeding, especially the development of resistant varieties”
The same questions in other papers
Meloidogyne enterolobii · disease · Psidium guajava (guava)Results agree
1 paper in the same direction as this paper
- negative
inoculation · growth · Psidium guajava (guava)Positive and negative results
3 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 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.