scholarly journals Host status of eucalypt species to Pratylenchus brachyurus and Meloidogyne incognita

2021 ◽  
Vol 88 ◽  
Author(s):  
Victor Hugo Moura de Souza ◽  
Mário Massayuki Inomoto
Keyword(s):  
Meloidogyne Incognita ◽  
Eucalypt Species ◽  
Pratylenchus Brachyurus ◽  
Host Status

scholarly journals Nematóides associados a plantas invasoras

1976 ◽  
Vol 33 (0) ◽  
pp. 597-615 ◽  
Author(s):  
Antonio Carlos Zem ◽  
Luiz Gonzaga E. Lordello
Keyword(s):  
Meloidogyne Incognita ◽  
Meloidogyne Javanica ◽  
Meloidogyne Arenaria ◽  
Pratylenchus Brachyurus ◽  
Pratylenchus Zeae

O presente trabalho trata de nematóides associados a raízes de 71 plantas invasoras, nas quais revelou-se a presença de 8 gêneros e 18 espécies parasitas. As espécies, pela ordem decrescente de freqüência foram: Helicotylenchus dihystera (46%) ; Meloidogyne javanica (24%) ; Meloidogyne incognita (23%); Macroposthonia ornata (17%); Pratylenchus brachyurus (16%) ; Pratylenchus zeae (14%) ; Xiphinemaseiariae (11%); Xiphinema krugi (10%); Helicotylenchus pseudorobustus (5,6%); Meloidogyne arenaria (4,2%); Helicotylenchus dUiysteroides (4,2%) ; Tylenchorhynchus martini (4,2%) ; Aphelenchoides sp. (2,8%) ; Ditylenchus sp. (2,8%) ; Helicotylerfichus microcephalus (2,8%) ; Xiphinema elongatum (2,8%) ; Helicotylenchus egyptiensis (1,4%) e Meloidogyne coffeicola (1,4%). São feitas considerações sobre as implicações para a agricultura de tão ampla distribuição de nematóides em plantas colonizadoras e gramíneas utilizadas como forrageiras.

scholarly journals KEEFEKTIFAN BAKTERI ENDOFIT UNTUK MENGENDALIKAN NEMATODA Pratylenchus brachyurus PADA TANAMAN NILAM

2020 ◽  
Vol 17 (1) ◽  
pp. 6
Author(s):  
RITA HARNI ◽  
SUPRAMANA SUPRAMANA ◽  
MEITY S. SINAGA ◽  
GIYANTO GIYANTO ◽  
SUPRIADI SUPRIADI
Keyword(s):  
Meloidogyne Incognita ◽  
Endophytic Bacteria ◽  
Penetration Rate ◽  
Achromobacter Xylosoxidans ◽  
Radopholus Similis ◽  
Fresh Weight ◽  
Greenhouse Condition ◽  
Pogostemon Cablin ◽  
Pratylenchus Brachyurus ◽  
Uninoculated Control

<p>ABSTRAK</p><p>Penggunaan bakteri endofit sebagai agen pengendalian nematodaparasit seperti Meloidogyne incognita pada kapas dan tomat, Globoderasp. pada kentang dan Radopholus similis pada pisang telah banyak ditelitipada beberapa jenis tanaman. Penelitian bertujuan untuk menganalisiskeefektifan  beberapa  bakteri  endofit terhadap  perkembangan  P.brachyurus, penetrasi, reproduksi, dan kerusakan yang diakibatkannyapada tanaman nilam. Penelitian dilakukan di Laboratorium dan Rumahkaca Hama dan Penyakit Balai Penelitian Tanaman Obat dan AromatikBogor, dari bulan Maret sampai Agustus 2008. Penelitian menggunakanrancangan acak lengkap (RAL) 6 perlakuan dengan 7 ulangan. Lima isolatbakteri endofit, yaitu Achromobacter xylosoxidans TT2, Alcaligenesfaecalis NJ16, Pseudomonas putida EH11, Bacillus cereus MSK, danBacillus subtilis NJ57, diaplikasikan pada setek tanaman nilam denganmetode perendaman akar. Seminggu setelah tanam, nilam diinokulasidengan 500 ekor P. brachyurus. Pengamatan dilakukan terhadap penetrasi,reproduksi, populasi nematoda, dan pertumbuhan nilam. Hasil penelitianmenunjukkan bahwa bakteri endofit A. xylosoxidans TT2, A. faecalisNJ16, P. putida EH11, B. cereus MSK, dan B. subtilis NJ57 dapatmenekan penetrasi dan populasi P. brachyurus ke dalam akar sebesar54,8-70,6% dengan faktor reproduksi (pf/pi) 0,61-0,94 dan meningkatkanpertumbuhan tanaman nilam sebesar 37,86-84,71%.</p><p>Kata kunci: Pogostemon cablin, bakteri endofit, keefektifan, nematoda,Pratylenchus brachyurus, pengendalian biologi</p><p>ABSTRACT</p><p>Effectiveness  of  endophytic  bacteria  to  controlPratylenchus brachyurus nematode on patchouli</p><p>The use of endophytic bacteria as biocontrol agents for nematodes,such as Meloidogyne incognita on cotton and tomatoes, Globodera sp. onpotatoes and Radopholus similis on bananas has been widely studied inseveral crops. The aim of the study was to investigate the effectiveness ofsome endophytic bacteria to control P. brachyurus, penetration,reproduction, and plant fresh weight production. Five isolates, namely A.xylosoxidans TT2, A. faecalis NJ16, P. putida EH11, B. cereus MSK, andB. subtilis NJ57 were applied to the patchouli cutting roots by soakingmethod before planting. A week after planting, the plants were inoculatedwith 500 juveniles and adults of P. brachyurus. Observations were doneon penetration and reproduction rates of the nematode, and growth ofpatchouli plant. Under greenhouse condition, A. xylosoxidans TT2, A.faecalis NJ16, P. putida EH11, B. cereus MSK, and B. subtilis NJ57reduced penetration rate of P. brachyurus into the patchouli roots by 54.8to 70.6% and suppressed nematode population with pf/pi value 0.61 to0.94. Growth of inoculated plants increased by 37.86 to 84.71% comparedwith uninoculated (control) ones.</p><p>Key words: Pogostemon cablin, endophytic bacteria, effectivenessnematode, Pratylenchus brachyurus, biological control</p>

Host status of green manures for two isolates of Pratylenchus brachyurus in Brazil

Nematology ◽  
2007 ◽  
Vol 9 (6) ◽  
pp. 799-805 ◽  
Author(s):  
Luiz Ferraz ◽  
Luis Motta ◽  
Mário Inomoto ◽  
Kércya de Siqueira ◽  
Andressa Machado
Keyword(s):  
Cover Crops ◽  
Pigeon Pea ◽  
Mucuna Pruriens ◽  
Parasitic Nematodes ◽  
Infested Soil ◽  
Tagetes Patula ◽  
Green Manures ◽  
Lesion Nematodes ◽  
Pratylenchus Brachyurus ◽  
Host Status

AbstractDue to the complexity of management of plant-parasitic nematodes in cash crops, the use of non-chemical methods, such as rotation with green manures, has increased in recent years. However, data about the host status of green manures for lesion nematodes are scarce. Thus, two glasshouse trials were carried out to evaluate the host status of some green manures for two isolates of Pratylenchus brachyurus, a root-lesion nematode often found attacking soybean, maize and cotton in Brazil. Green manures tested were pigeon pea (Cajanus cajan) cultivars Fava Larga and Iapar 43, Crotalaria juncea, C. spectabilis, C. mucronata, C. breviflora, C. ochroleuca, C. paulina, velvetbean (Mucuna pruriens) cvs Black, Dwarf and Gray. Soybean cv. Pintado and French marigold (Tagetes patula) were included as standard good and poor hosts for P. brachyurus. In a separate glasshouse experiment, a naturally infested soil was used to evaluate the suitability of two green manures to P. brachyurus in comparison with two gramineaceous cover crops. In addition, morphometric studies were carried out with the two isolates of P. brachyurus used in experiments in order to confirm the species. Among the 11 green manures tested, at least two, C. spectabilis and C. breviflora, can be useful as rotation crops to reduce population densities of P. brachyurus, irrespective of the origin of the nematode. By contrast, all velvetbean cultivars and C. juncea must be avoided in infested areas as they are good hosts for the nematode.

Resistance evaluation and host status of selected green gram germplasm against Meloidogyne incognita

2017 ◽  
Vol 92 ◽  
pp. 198-202 ◽  
Author(s):  
Tariq Mukhtar ◽  
Muneeba Arooj ◽  
Muhammad Ashfaq ◽  
Asim Gulzar
Keyword(s):  
Meloidogyne Incognita ◽  
Green Gram ◽  
Resistance Evaluation ◽  
Host Status

scholarly journals Fitonematoides associados a frutíferas na região Noroeste do Paraná, Brasil

2010 ◽  
Vol 32 (4) ◽  
pp. 1064-1071 ◽  
Author(s):  
Cláudia Regina Dias-Arieira ◽  
Cleber Furlanetto ◽  
Simone de Melo Santana ◽  
Davi Antonio Oliveira Barizão ◽  
Regina Cássia Ferreira Ribeiro ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Tylenchulus Semipenetrans ◽  
Pratylenchus Brachyurus

Com o objetivo de estudar a ocorrência de nematoides fitoparasitos em frutíferas cultivadas na região noroeste do Paraná, realizou-se um levantamento, envolvendo 124 amostras de solo e raízes coletadas de 19 espécies de frutíferas, em 15 municípios, no período de dezembro/2007 a fevereiro/2009. As amostras foram submetidas a extrações e avaliadas sob microscópio óptico. Foram constatados nove diferentes gêneros de nematoides. Em citros, a espécie mais frequente e abundante foi Tylenchulus semipenetrans, sendo também recuperados das amostras os gêneros Meloidogyne, Pratylenchus, Helicotylenchus, Xiphinema, Trichodorus, Mesocriconema e Dolichodorus. Nas demais frutíferas, os gêneros observados foram Meloidogyne, Pratylenchus, Helicotylenchus e Hemicycliophora. A maior abundância de Pratylenchus brachyurus ocorreu em abacaxizeiro, Meloidogyne incognita em figueira e caquizeiro, e Helicotylenchus dihystera e H. multicinctus em bananeira. Os principais gêneros de fitonematoides foram constatados em aproximadamente 50% das amostras, podendo representar risco para fruteiras da região se não manejados adequadamente.

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