Reaction of soybean genotypes to the nematodes Meloidogyne incognita and M. javanica

Brazil is the world's largest producer and exporter of soybean and studies show that production will continue to grow in the coming years. However, this increase is considered a major challenge due to the serious damage and losses caused by nematodes. The use of resistant materials presents a s...

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Bibliographic Details
Published in:European journal of plant pathology 2024-09, Vol.170 (1), p.25-37
Main Authors: Gontijo, Luciana Nunes, Juliatti, Fernando Cezar, dos Santos, Maria Amelia
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Ecology
Genotypes
Inoculation
Leaf area
Leaf area index
Life Sciences
Meloidogyne incognita
Nematodes
Plant Pathology
Plant Sciences
Soybeans
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Summary:Brazil is the world's largest producer and exporter of soybean and studies show that production will continue to grow in the coming years. However, this increase is considered a major challenge due to the serious damage and losses caused by nematodes. The use of resistant materials presents a sustainable alternative for suppressing them. Therefore, the objective was to evaluate the reaction of soybean genotypes to populations of Meloidogyne incognita and M. javanica . Two experiments were carried out for each species, on different dates, under greenhouse conditions, in a randomized block design with ten and twenty-two treatments, respectively, and four replicates. Plants were inoculated ten days after planting with a suspension of 2500 eggs and second-stage juveniles of M. incognita and M. javanica . Evaluations took place sixty days after inoculation (DAI), determining plant height, stem diameter, Spad index, leaf area index, reproduction factor and reproduction factor reduction. For the species M. incognita all genotypes were susceptible. The UFUL 592 and UFUL 298 genotypes had greater vegetative development and the UFUL 526 genotype behaved as a good host for the nematode. For M. javanica , the UFUL 172 and UFUL 592 genotypes showed good performance in terms of growth parameters, as well as nematological ones. In general, the UFUL 592 genotype performed well in the four trials.
ISSN:0929-1873
1573-8469
DOI:10.1007/s10658-024-02879-0