Fitonematoides associados a bananais 'Pacovan' sob condição de cultivo irrigado: relação com a produção

Ritzinger, C. H. S. P.; Borges, A. L.; Lêdo, Carlos Alberto da Silva; Caldas, R.C

doi:10.1590/s0100-29452007000300048

Cited by 4 publications

(4 citation statements)

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“…The reniform nematode had previously been reported in the state of Pernambuco in banana roots by Moura (1972) and Zem and Lordello (1983). The results obtained in this study are in agreement with Ritzinger et al (2007), who detected R. reniformis in a survey of plant-parasitic nematodes in banana plantations located in the irrigated perimeters of the municipalities of Petrolina -PE and Juazeiro-BA, where the authors found a positive correlation between the frequency of R. reniformis and H. multicinctus in roots of the banana cv. Pacovan.…”

Section: Resultssupporting

confidence: 92%

Identification of Plant Parasitic Nematodes in Triploid and Tetraploid Bananas in Brazil

et al. 2020

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Nematodes are important pathogens in banana plants, and the lack of resistant genotypes is the biggest challenge of the banana breeding programs. Little is known on the behavior of banana triploids and tetraploids developed by Embrapa regarding parasitism by plant-parasitic nematodes in field conditions. Embrapa Mandioca e Fruticultura experimental areas, naturally infested in five Brazilian states (Embrapa Acre - Acre, Embrapa Semiárido - Pernambuco, Embrapa Cerrados - Distrito Federal, Palmital - São Paulo and Epagri - Santa Catarina) were evaluated for the distribution and population levels of plant-parasitic nematodes in commercial cultivars and triploid and tetraploid genotypes in the final breeding stage. The root-knot nematodes (Meloidogyne spp.) were the most frequent in roots (40 - 100%) and soil (85.71 - 100%), with a detectable number of juveniles (J2) varying between genotypes (4 - 148 J2.250g-1 roots, and 1 - 110 J2.100 cm-3soil). Four esterase phenotypes were characterized: M. incognita (Est I1 = Rm: 1.0), M. javanica (Est J3 = Rm: 1.0; 1.25 and 1.40 and Est J2 = Rm: 1.0 and 1.40) and M. arenaria (Est A2 = Rm: 1.20 and 1.35), M. javanica (Est J3) was predominant. Meloidogyne javanica and M. incognita were predominant, however mixed infestations between species were found. The occurrence of Meloidogyne spp. was: M. javanica (68.26%), M. incognita (64.73%) and M. arenaria (16.81%). Helicotylenchus multicinctus and Rotylenchulus reniformis was the second most frequent group. Radopholus similis, Scutellonema sp., Criconemoides sp. and Helicotylenchus sp. presented themselves in low frequency and population levels in banana plants.

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Section: Resultssupporting

confidence: 92%

Identification of Plant Parasitic Nematodes in Triploid and Tetraploid Bananas in Brazil

et al. 2020

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“…The use of plant extract combined with HS contributed to root system growth. This contribution may be due to the biocidal aspects of triterpenoid saponins, the main component of the plant extract, which may have favoured the sanitation of the root environment, possibly acting on nematodes, which damage the root system (Ritzinger, Borges, Ledo, & Caldas, 2007), resulting in better root development than with only HS application. The action of these natural pesticides based on triterpenoid saponins, essential oils, is related to the repellent, intoxicating and/or antagonistic activity of the substances present in the plants.…”

Section: Resultsmentioning

confidence: 99%

<b>Roots of ‘BRS Princesa’ banana fertigated with humic substances and saponin-based plant extracts

et al. 2016

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ABSTRACT. This study aimed to evaluate the effects of fertigation with humic substances, with and without the addition of plant extracts, on the root system of the 'BRS Princesa' banana cultivar. The banana crop was cultivated at a spacing of 2.0 x 2.5 m and fertigated using a drip system in a dystrocohesive Yellow Latosol. The experimental design was randomized blocks, in a split-split-plot scheme with five replicates, for the following factors: humic substance doses and presence of a plant extract formulation. The treatments consisted of five doses of humic substances, based on a reference dose of 14.14 L ha , in the presence and absence of plant extract. The variable root length (cm) was subjected to variance analyses to evaluate the effect of the humic substances, either isolated or in interaction with plant extract and soil depth. The use of the plant extract increased the effect of the humic substance on root length but overshadowed its effect for the different doses of humic substance. Root length was not sensitive to increasing humic substance dose with plant extract for doses of up to 42.42 L ha -1 at 0 -0.40 m depth.

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“…(Gowen andQuene-herve 1990, Koshy andBanu 2000) and yield losses are estimated to be 19.7% amounting to US $17.8 million (Sasser and Freckman 1987b). Nevertheless, only Radopholus similis, several species of the genus Meloidogyne, Helicotylenchus, Pratylenchus and Rotylenchulus associated with the soil or roots of banana and cause significant losses in banana plantations (Ritzinger et al 2007). Since no other work has been done on plant parasitic nematodes associated with this ubiquitous and useful fruit crop in northern part of Bangladesh, a survey was made to collect and identify the nematodes associated with banana.…”

Section: Introductionmentioning

confidence: 99%

Nematode diversity in banana rhizosphere from northern districts of Bangladesh

et al. 2012

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Context: Banana is one of the most important fruits crops among the different fruit crops in the agricultural and its intensively cultivated in all over the parts of Bangladesh especially in northern part. Many species of plant parasitic nematodes are association with banana root systems and are mainly responsible for controlling the banana productions to greater extend.Objective: Keeping in view of the disturbing nature of the nematode pest, the present study was undertaken to examine the biodiversity of plant parasitic nematodes associated with banana intensively grown in northern districts of Bangladesh. Materials and Methods:The collection of nematodes was conducted in the banana growing areas of Bogra, Natore, Rajshahi, Rangpur and Gaibandha districts. In each area, banana fields of different commercial cultivars were chosen for collection of soil and root samples. From each field 10 plants were selected randomly for sample collection. Each subsample consisted about 1 kg of soil and 20 g of fleshy roots taken from a single mat from a depth of 10-30 cm and from three equidistant points (40-50 cm) around the pseudostem Nematodes were extracted from soil by Cobb's sieving technique and from root by Mechanical maceration technique, and processed by Seinhorst's slow dehydration method. Fixing was done in boiling lactophenol cotton blue and finally by formalin glycerin solution. Dehydrated nematodes were kept in glycerol-ethanol solution and mounted permanently on glass slides. Identification was done up to species following the keys.Results: Among the plant parasitic nematodes ten species belonging to nine genera, six families of a single order, viz. Helicotylenchus dihystera, Rotylenchulus reniformis, Meloidogyne incognita, Hoplolaimus galeatus, Tylenchorhynchus mashhoodi, Tylenchorhynchus annulatus, Criconemoides sp., Hemicriconemoides cocophillus, Cephalenchus emarginatus and Aphelenchus avenae were encountered. Among the non-parasitic nematodes 15 genera belonging to seven families and three orders viz. Acrobeles, Acrobeloides, Aporcelaimus, Aporcelaimium, Aporcelaimellus, Cephalobus, Dorylaimus, Dorylaimoides, Discolaimus, Discolaimium, Discolaimoides, Indodorylaimus, Mylonchulus, Iotonchus, and Rhabditis were found to be associated with soils in banana field. It was found that species H. galeatus, C. emarginatus and M. incognita were present in all the surveyed areas. Four species of parasitic nematodes viz. C. emarginatus, H. cocophillus, Criconemoides sp. and A. avenae and 5 genera of non parasitic nematodes viz., Aporcelaimium, Aporcelaimellus, Discolaimium, Discolaimoides and Indodorylaimus are reported for the first time in Bangladesh. Conclusion:Present investigation have clearly indicated that the association of plant parasitic nematodes especially the most an important nematodes species like Hoplolaimus galeatus, Cephalenchus emarginatus and Meloidogyne incognita would cause severe economic yield loss to banana plantation in the study area.

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Fitonematoides associados a bananais 'Pacovan' sob condição de cultivo irrigado: relação com a produção

Cited by 4 publications

References 1 publication

Identification of Plant Parasitic Nematodes in Triploid and Tetraploid Bananas in Brazil

Identification of Plant Parasitic Nematodes in Triploid and Tetraploid Bananas in Brazil

<b>Roots of ‘BRS Princesa’ banana fertigated with humic substances and saponin-based plant extracts

Nematode diversity in banana rhizosphere from northern districts of Bangladesh

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