Genótipos de soja resistentes à ferrugem, oriundos de germoplasma com ampla base genética
Data
2012-12-13
Autores
Souza, Débora Santana de Matos
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Universidade Federal de Mato Grosso
Resumo
The objective of this study was to develop cultivars that have
high grain productivity, along with other characteristics that optimize its
production, as resistance to biotic and abiotic stresses. This experiment was
carried out in an experimental field in the Mato Grosso Federal University
(UFMT), in the municipality of Rondonópolis, State of Mato Grosso, Brazil.
The tests were settled in randomized block designs having three repetitions.
57 soybean genotypes from the Uberlândia Federal University were
evaluated, being 24 lineages and three witnesses of medium early/medium
cycle and 25 lineages and five witnesses of medium late/late cycle. The tests
were performed in duplicity, being one of them subject to treatment with
fungicide and another one with no treatment. The variables analyzed were:
severity and number of pustules cm2 of the Asian rust (AACPD), chlorophyll
content, stomatal conductance, number of days for blooming, plant height
under maturation, and insertion of the first pod, grain productivity, 100-grain
weight, number of pods per plant, and grain per pod. The results were
subject to analysis of variance by means of the statistics program Sisvar,
developed by the Lavras Federal University. The materials that stood out in
the test of medium early/medium cycle were UFUS 13 and the witness
Richness, which displayed more resistance to the pathogen, while genotype
UFUS 02 stood out the characters plant height, insertion into the first pod,
grain percentage and productivity. As to the semi late/late cycle test lineages
UFUS 006 and UFUS 023 showed better performances related to plant
height under maturation, productivity, 100-seed weight, seed percentage and
resistance to Asian rust.
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SOUZA, Débora Santana de Matos. Genótipos de soja resistentes à ferrugem, oriundos de germoplasma com ampla base genética. 2012. 94 f. Dissertação (Mestrado em Engenharia Agrícola) - Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, 2012.