Abstract
Abstract The fungus Alternaria padwickii has been frequently detected in seed tests of rice collected from commercial crops in Corrientes Province, Argentina. This pathogen causes germination inhibition, seedling death or spotted grains and is the causal agent of Alternaria leaf spot. The pathogen survives as mycelia and sclerotia on seeds, plant debris and soil. Four detection methods were compared in laboratory tests, to select the best for a quick identification of the fungus in seeds. The methods were (i) Blotter Test (ii) Potato glucose agar, (iii) Bean agar (BA) and (iv) Malt extract agar. Twenty seed samples of different varieties of rice collected from Empedrado, Goya, Itá Ibaté, La Cruz, Mercedes, Paso de los Libres and Perugorría localities (Corrientes, Argentina), were analyzed in the assays. The anova test and the Tukey multiple range test were applied on the data to compare the A. padwickii incidence among the varieties and detection methods. BA method was found more sensitive than other methods for A. padwickii . The incidence values ranged from 3.6 to 76%. The statistical analysis demonstrated that the BA method was the most efficient for the detection of seed pathogens, and it could be useful in studies of transmission and chemical control.
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Claims 3
Claim · model-written summary
Bean agar was more sensitive than other methods for detecting A. padwickii in rice seeds.
- Taxon
- rice
Oryza sativat0 - Interactor
- A. padwickii
Alternaria padwickiie0pathogen - Outcome
- sensitivee0
- Direction
- more sensitivee0
- Comparator
- other methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA method was found more sensitive than other methods for A. padwickii .”
t0“Rice Seeds”
Claim · model-written summary
A. padwickii incidence in rice seed tests ranged from 3.6 to 76%.
- Taxon
- riceOryza sativat0
- Outcome
- incidence valuese0
- Value
- 3.6 to 76%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incidence values ranged from 3.6 to 76%.”
t0“Rice Seeds”
Claim · model-written summary
Bean agar was the most efficient method for detecting seed pathogens.
- Taxon
- riceOryza sativat0
- Outcome
- detection of seed pathogense0
- Direction
- most efficiente0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The statistical analysis demonstrated that the BA method was the most efficient for the detection of seed pathogens, and it could be useful in studies of transmission and chemical control.”
t0“Rice Seeds”