Abstract
The potential of biotic and chemical plant inducers to trigger the resistant in plant against disease was investigated. A biotic inducer as Trichoderma harzianum and chemical inducers as salicylic acid and Bion were tested for their induced resistance ability to protect anthracnose disease on two tested chilli cvs. Mae Ping and Man Dum in both seedling and mature stages. The necrotic symptom development on seedling of both tested chilli varieties after treated with Bion 0.05 mg a.i./ml was significantly lower than the others. The potential of anthracnose management on chilli cv. Man Dum was also treated by T. harzianum at 10 8 spore/ml and salicylic acid at 1 mM. Treatments with any plant inducer did not lead to an increase activity of polyphenol oxidase in chilli cotyledon 1, 3 and 5 day after challenge inoculation. In field experiment, the result showed that the foliar sprays with any of plant inducer reduced the infection percentage of anthracnose on chilli. Bion also showed the best percentage of disease reduction compared to the untreated treatment at 76.3% and 75.9% on both chilli varieties, whereas in treatment of 10 8 spore/ml T. harzianum and 2 mM salicylic acid were reduced 24.2, 57.4% and 19.8, 36.6% respectively. However, fruit yield of Bion treatment was very low and significantly different to control. The phytotoxicity occurred at high concentration. T. harzianum and salicylic acid treatment showed the fruit yield to be significantly increased in comparison with the control on chilli cv. Man Dum, but not on cv. Mae Ping. All plant inducers did not affect to fruit fly infestation on both varieties under field conditions.
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Claims 6
Claim · model-written summary
Foliar sprays of any plant inducer reduced anthracnose infection percentage on chilli.
- Taxon
- chillit0
- Treatment
- foliar sprays with any of plant inducere0
- Outcome
- infection percentage of anthracnosee0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“the foliar sprays with any of plant inducer reduced the infection percentage of anthracnose on chilli”
t0“Resistance of Chilli to Anthracnose”
Claim · model-written summary
Plant inducers did not increase polyphenol oxidase activity in chilli cotyledons at 1, 3 and 5 days after challenge inoculation.
- Taxon
- chillit0
- Organ / stage
- chilli cotyledone0
- Treatment
- any plant inducere0
- Outcome
- activity of polyphenol oxidasee0
- Direction
- did not lead to an increasee0
Not reportedComparator
Verbatim
e0“Treatments with any plant inducer did not lead to an increase activity of polyphenol oxidase in chilli cotyledon 1, 3 and 5 day after challenge inoculation”
t0“Resistance of Chilli to Anthracnose”
Claim · model-written summary
Trichoderma harzianum and salicylic acid significantly increased fruit yield of chilli cv. Man Dum compared with the control.
Verbatim
e0“T. harzianum and salicylic acid treatment showed the fruit yield to be significantly increased in comparison with the control on chilli cv. Man Dum”
t0“Resistance of Chilli to Anthracnose”
Claim · model-written summary
Trichoderma harzianum and salicylic acid did not significantly increase fruit yield of chilli cv. Mae Ping.
- Taxon
- chillit0
- Material
- Mae Pinge1
- Treatment
- T. harzianum and salicylic acid treatmente0
- Outcome
- fruit yielde0
- Comparator
- controle0
Not reportedDirection
Verbatim
e0“T. harzianum and salicylic acid treatment showed the fruit yield to be significantly increased in comparison with the control on chilli cv. Man Dum”
e1“but not on cv. Mae Ping”
t0“Resistance of Chilli to Anthracnose”
Claim · model-written summary
Phytotoxicity of the inducers occurred at high concentration.
Verbatim
e0“The phytotoxicity occurred at high concentration”
t0“Resistance of Chilli to Anthracnose”
Claim · model-written summary
Plant inducers did not affect fruit fly infestation on chilli under field conditions.
- Taxon
- chillit0
- Treatment
- plant inducerse0
- Interactor
- fruit flye0pest
- Outcome
- fruit fly infestatione0
- Direction
- did not affecte0
Not reportedComparator
Verbatim
e0“All plant inducers did not affect to fruit fly infestation on both varieties under field conditions”
t0“Resistance of Chilli to Anthracnose”
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