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| BELLÉ,C.; KASPARY,T.E.; KUHN,P.R.; SCHMITT,J.; LIMA-MEDINA,I.. |
| ABSTRACT Weeds can be hosts of root-lesion nematode (Pratylenchus spp.), maintaining or increasing their population in the soil. The objective of this study was to evaluate the reaction of 25 weeds species to the nematode Pratylenchus zeae. The weed plants were individually inoculated with 1,000 individuals of P. zeae and maintained in a greenhouse for 90 days. After this period, eggs and nematodes were extracted, quantified, and the reproduction factor (RF = final population/initial population) was calculated. All tested weeds were susceptible (RF>1) to P. zeae, and the species Brachiaria decumbens, Rhynchelytrum repens, Digitaria insularis, D. horizontalis, B. brizantha were the most susceptible to this parasite. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Invasive plants; Susceptibility; Lesion nematode; Parasite. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100203 |
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| ÁVILA,MARIANA R.; DALL’AGNOL,MIGUEL; MARTINELLI,JOSÉ A.; SILVA,GERARDA B.P. DA; BREMM,CAROLINA; NUNES,TAMYRIS. |
| ABSTRACT Foliar diseases impose severe restrictions on the persistence and productivity of Medicago sativa, both of which may be increased by developing disease resistant and more competitive genotypes that can improve pasture quality. We found Curvularia geniculata as the principal alfalfa foliar pathogen in the Brazilian state of Rio Grande do Sul (RS). Growth chamber experiments evaluated the resistance of alfalfa genotypes ‘E1C4’, ‘CPPSul’, ‘ABT 805’ and ‘CUF-101’ to C. geniculata as compared the control ‘Crioula’ genotype. These genotypes were also evaluated in field trials at a sea level site in Eldorado do Sul in central RS and at two sites £200 m above sea level, one in Bagé municipality in south west RS and the other at a farm near the town of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lucerne; Invasive plants; Foliar pathogen; Forage legumes. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401801 |
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| Larcher,Letícia; Nogueira,Guilherme; Boeger,Maria Regina. |
| ABSTRACT The objective of this study was to understand the different morpho-physiological strategies of Ligustrum lucidum, an invasive species occurring in Brazilian forest fragments under heterogeneous light conditions. Ten individuals of L. lucidum were selected and evaluated for morphological of the leaves and physiological traits. For morphological parameters were evaluated: length, width, area, angle, petiole length, dried mass, total thickness, palisade parenchyma and spongy parenchyma thickness, abaxial and adaxial epidermis thickness, stomata density, leaf density and specific leaf area. The physiological traits were vapor-pressure deficit, assimilation rate, CO2 sub-stomata concentration, intrinsic water-use efficiency, transpiration rate and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Invasive plants; Phenotypic integration; Assimilation rates; Glossy privet. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600877 |
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