Abstract
ABSTRACT The sorghum aphid Melanaphis sorghi (Hemiptera: Aphididae) has become the primary threat to crop production in various parts of the world. Although the combined use of organosynthetic insecticides and resistant hybrids is a common strategy in countries like the USA, Brazilian farmers face the challenge of a lack of registered active ingredients and resistant cultivars against M. sorghi. This study aimed to evaluate grain sorghum genotypes for resistance to M. sorghi infestation. In the initial screening phase, 28 genotypes were evaluated, from which eight were selected and grouped as: i) resistant to M. sorghi (BRS373, CMSXS3017, BRS310, and SC110 [control]); and ii) susceptible (CMSXS3012, 1822043, 2116017, and AG 1085), for further assessment and determination of productivity in subsequent stages. The trial was conducted in a greenhouse under controlled humidity and temperature, with three controlled artificial infestations and injury assessments every seven days. Aphid infestation primarily reduced the plant fresh weight of the plant and grain size, negatively affecting grain weight per panicle. Without M. sorghi infestation, the hybrid genotypes AG 1085, 1822043, and CMSXS3012 showed the highest grain weight; however, they were susceptible to aphids when infested. Under infestation, the most resistant genotypes with the highest grain weight values were CMSXS3017, SC110, BRS373, and BRS310. The SC110 lineage was minimally affected by aphid infestation and should be used as a source of resistance in breeding programs for aphid tolerance. The results of this study may be used to evaluate productivity losses due to sorghum aphid infestation and to propose potential resistant genetic materials. Combined with other integrated management tactics, these findings can make sorghum aphid control more precise and sustainable.
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Claims 9
Claim · model-written summary
Aphid infestation reduced plant fresh weight of sorghum in a greenhouse trial.
- Treatment
- Aphid infestatione1
- Interactor
- Melanaphis sorghi
Melanaphis sorghit0pest - Outcome
- plant fresh weighte1
- Direction
- reducede1
- Setting
- greenhousee3
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e1“Aphid infestation primarily reduced the plant fresh weight of the plant and grain size, negatively affecting grain weight per panicle”
e3“The trial was conducted in a greenhouse under controlled humidity and temperature”
Claim · model-written summary
Aphid infestation reduced grain size of sorghum.
- Treatment
- Aphid infestatione1
- Interactor
- Melanaphis sorghiMelanaphis sorghit0pest
- Outcome
- grain sizee1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e1“Aphid infestation primarily reduced the plant fresh weight of the plant and grain size, negatively affecting grain weight per panicle”
Claim · model-written summary
Aphid infestation decreased grain weight per panicle of sorghum.
- Treatment
- Aphid infestatione1
- Interactor
- Melanaphis sorghiMelanaphis sorghit0pest
- Outcome
- grain weight per paniclee1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e1“Aphid infestation primarily reduced the plant fresh weight of the plant and grain size, negatively affecting grain weight per panicle”
Claim · model-written summary
Without infestation, sorghum genotypes AG 1085, 1822043 and CMSXS3012 had the highest grain weight.
- Material
- AG 1085, 1822043, and CMSXS3012e2
- Interactor
- M. sorghiMelanaphis sorghie2pest
- Outcome
- grain weighte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e2“Without M. sorghi infestation, the hybrid genotypes AG 1085, 1822043, and CMSXS3012 showed the highest grain weight; however, they were susceptible to aphids when infested”
Claim · model-written summary
Sorghum genotypes AG 1085, 1822043 and CMSXS3012 were susceptible to aphids when infested.
- Material
- AG 1085, 1822043, and CMSXS3012e2
- Interactor
- aphidsAphidomorphae2pest
- Outcome
- susceptible to aphidse2
- Qualifier
- when infestede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e2“Without M. sorghi infestation, the hybrid genotypes AG 1085, 1822043, and CMSXS3012 showed the highest grain weight; however, they were susceptible to aphids when infested”
Claim · model-written summary
Under infestation, genotypes CMSXS3017, SC110 and BRS373 had the highest grain weight.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e4“Under infestation, the most resistant genotypes with the highest grain weight values were CMSXS3017, SC110, BRS373, and BRS310”
Claim · model-written summary
Under infestation, genotype BRS310 had the highest grain weight.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e4“Under infestation, the most resistant genotypes with the highest grain weight values were CMSXS3017, SC110, BRS373, and BRS310”
Claim · model-written summary
Genotype SC110 was minimally affected by aphid infestation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e5“The SC110 lineage was minimally affected by aphid infestation and should be used as a source of resistance in breeding programs for aphid tolerance”
Claim · model-written summary
SC110 should be used as a source of resistance in sorghum breeding programs for aphid tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi”
e5“The SC110 lineage was minimally affected by aphid infestation and should be used as a source of resistance in breeding programs for aphid tolerance”