Abstract
Post-harvest losses of maize due to storage insect pest such as the maize weevil, have been recognized as an increasingly important problem in the world. A study was conducted with the objectives to determine the performance of Sitophilus zeamais populations originating from the five Brazilian regions in five varieties of maize and to correlate these variables with the enzymatic activity of insects and nutritional components of the grain. The grain of maize hybrids 30F53H, 30K64H, 30F35H, DKB390 and “crioulo” (not commercial) maize produced in the microregion of Alto Médio Gurguéia in Piauí, was infested with 25 unsexed insects of S. zeamais coming from Bom Jesus, PI; Canarana, MT; Volta Redonda, RJ; Cacoal, RO; and Palmeira das Missões, RS. At the end of 120 days enzyme assays of amylase, lipase and protease from the insects, as well as nutritional analyses of the maize grains were performed. The hybrid with the greatest mass of grain consumption was 30F53H, and insects fed on this achieved the highest growth, followed by 30K64H, DKB390, 30F35H and the “crioulo” with the lowest loss of grain mass and hence the least insect growth. For the data of mass consumed by S. zeamais, the populations of Bom Jesus and Canarana were the ones that ate the most and Palmeira das Missões had the lowest consumption. The population from Bom Jesus, PI was the one that consumed the most grain mass, due to its adaptation to maize from the region. The “crioulo” maize was the one that presented the best indicators of resistance to attack by S. zeamais. Key words: Digestive enzymes, maize weevil, host plant resistance to insects, stored grain.
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Claims 9
Claim · model-written summary
30F53H had the greatest maize grain mass consumption.
- Material
- 30F53He0
- Interactor
- Sitophilus zeamais
Sitophilus zeamaist1pest - Outcome
- mass of grain consumptione0
- Direction
- greateste0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hybrid with the greatest mass of grain consumption was 30F53H”
t0“maize”
t1“Sitophilus zeamais”
Claim · model-written summary
Weevils feeding on 30F53H had the highest growth, followed by 30K64H, DKB390 and 30F35H.
- Taxon
- Sitophilus zeamaisSitophilus zeamaist0
- Material
- 30F53He0
- Outcome
- growthe0
- Direction
- higheste0
- Qualifier
- followed by 30K64H, DKB390, 30F35He0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hybrid with the greatest mass of grain consumption was 30F53H, and insects fed on this achieved the highest growth, followed by 30K64H, DKB390, 30F35H and the “crioulo” with the lowest loss of grain mass and hence the least insect growth.”
t0“Sitophilus zeamais”
t1“maize”
Claim · model-written summary
Crioulo maize had the lowest grain mass loss.
- Material
- criouloe0
- Interactor
- Sitophilus zeamaisSitophilus zeamaist1pest
- Outcome
- loss of grain masse0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the “crioulo” with the lowest loss of grain mass and hence the least insect growth.”
t0“maize”
t1“Sitophilus zeamais”
Claim · model-written summary
Crioulo supported the least weevil growth.
- Taxon
- Sitophilus zeamaisSitophilus zeamaist0
- Material
- criouloe0
- Outcome
- insect growthe0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the “crioulo” with the lowest loss of grain mass and hence the least insect growth.”
t0“Sitophilus zeamais”
t1“maize”
Claim · model-written summary
Bom Jesus weevils were among the populations consuming the most grain.
- Taxon
- S. zeamaisSitophilus zeamaise0
- Material
- Bom Jesuse0
- Outcome
- mass consumed by S. zeamaise0
- Direction
- moste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the data of mass consumed by S. zeamais, the populations of Bom Jesus and Canarana were the ones that ate the most and Palmeira das Missões had the lowest consumption.”
Claim · model-written summary
Canarana weevils were among the populations consuming the most grain.
- Taxon
- S. zeamaisSitophilus zeamaise0
- Material
- Canaranae0
- Outcome
- mass consumed by S. zeamaise0
- Direction
- moste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the data of mass consumed by S. zeamais, the populations of Bom Jesus and Canarana were the ones that ate the most and Palmeira das Missões had the lowest consumption.”
Claim · model-written summary
Palmeira das Missões weevils had the lowest consumption.
- Taxon
- S. zeamaisSitophilus zeamaise0
- Material
- Palmeira das Missõese0
- Outcome
- consumptione0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the data of mass consumed by S. zeamais, the populations of Bom Jesus and Canarana were the ones that ate the most and Palmeira das Missões had the lowest consumption.”
Claim · model-written summary
The authors attribute the highest grain consumption by Bom Jesus weevils to adaptation to local maize.
- Taxon
- Sitophilus zeamaisSitophilus zeamaist0
- Material
- Bom Jesuse0
- Outcome
- grain masse0
- Direction
- moste0
- Qualifier
- due to its adaptation to maize from the regione0
- Setting
- Bom Jesus, PIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population from Bom Jesus, PI was the one that consumed the most grain mass, due to its adaptation to maize from the region.”
t0“Sitophilus zeamais”
Claim · model-written summary
Crioulo maize had the best indicators of resistance to S. zeamais attack.
- Material
- criouloe0
- Interactor
- S. zeamaisSitophilus zeamaise0pest
- Outcome
- indicators of resistance to attacke0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The “crioulo” maize was the one that presented the best indicators of resistance to attack by S. zeamais.”