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

Effect of Oil Cakes and Bio-agents Each Alone and in Combination for Management of Root Knot Nematode (Meloidogyne incognita) in Green Gram

2021 ◽  
Vol 12 (5) ◽  
pp. 286-294
Author(s):  
Poornata Jena ◽  
◽  
N. K. Sahoo ◽  
J. K. Mahalik ◽  
◽  
...  
Keyword(s):  
Plant Growth ◽  
Chlorophyll Content ◽  
Meloidogyne Incognita ◽  
Seed Treatment ◽  
Growth Parameters ◽  
Green Gram ◽  
Root Knot Nematode ◽  
Neem Cake ◽  
Untreated Check ◽  
Am Fungus

A pot experiment was carried out in the net house of Department of Nematology, OUAT, Bhubaneswar, Odisha, India during June to August, 2017 on the application of oilcakes (mustard cake and neem cake) and bio-agents (Trichoderma viride, Glomus fasciculatum, Rhizobium leguminosarum) each alone and in combination for the management of root knot nematode (Meloidogyne incognita) in green gram. Result of the experiment indicated that soil application of mustard or neem cake @ 50 g m-2 with AM fungus (Glomus fasciculatum) @ 5 g m-² and seed treatment of Rhizobium @ 25 g kg-1 of green gram seed declined the root knot nematode population, number of galls plant-1, number of eggmass plant-1and root knot index with corresponding increase of plant growth parameters and chlorophyll content in green gram plant as compared to other treatments and untreated check. But integration of mustard cake @ 50 g m-2 at 2 weeks prior to sowing with AM fungus @ 5 g m-2 at 10 days before sowing and seed treatment of Rhizobium @ 25 g kg-1 green gram seed exhibited the lowest M. incognita population 200 cc soil-1 (153.33 J2), number of galls plant-1 (7.0), number of eggmass plant-1 (2.0) and root knot index (2.0) reflecting enhancement of plant growth parameters, number of pods (206.67%), number of nodules (691.17%) over untreated check. This integrated management module also recorded maximum increase in the availability of NPK content in soil and chlorophyll content as compared to other treatments.

Life cycle duration of Meloidogyne incognita and host status of Brassicaceae and Capparaceae selected for glucosinate content

Nematology ◽  
2005 ◽  
Vol 7 (2) ◽  
pp. 203-212 ◽  
Author(s):  
Elisabetta Dallavalle ◽  
Luca Lazzeri ◽  
Giovanna Curto
Keyword(s):  
Life Cycle ◽  
Meloidogyne Incognita ◽  
Cropping System ◽  
Cycle Duration ◽  
Root Knot Nematode ◽  
Tomato Cultivar ◽  
Host Status ◽  
Rapistrum Rugosum ◽  
Susceptible Tomato ◽  
Life Cycle Duration

AbstractDifferent plant species in the families Brassicaceae and Capparaceae were evaluated for their potential use in management of the root-knot nematode, Meloidogyne incognita. Preliminary tests on host suitability were carried out for toxic effects on the nematode in small field plots of soil naturally infested with M. incognita. Afterwards, the best accessions and a susceptible tomato cultivar (UC82) were tested in pots to collect more complete observations of the nematode life cycle on the selected plant roots. Plants were cultivated in the glasshouse for 14–15 weeks and evaluated every 2 weeks. Root gall rating, population reproduction factor and life cycle duration showed wide differences amongst the different accessions and indicated two distinct approaches for control of M. incognita: catch crops or green manure. At 14–15 weeks after sowing, Rapistrum rugosum sel. ISCI 15, Eruca sativa cv. Nemat, Barbarea verna sel. ISCI 50 and Raphanus sativus cv. Boss were considered 'poor to nonhost' species; Brassica juncea sel. ISCI 99 was classified as 'maintenance host'; Lepidium campestre sel. ISCI 103 and Erucastrum gallicum were 'good hosts'. At 10 weeks after sowing, B. juncea sel. ISCI 20 was classified as a good host, so it could be grown for fewer than 8–10 weeks in a cropping system. The presence of galls and the identification of juveniles, females and egg masses, confirmed that second-stage juveniles had penetrated into the root of the tested accessions and completed their life cycle. However, in R. rugosum sel. ISCI 15, M. incognita did not complete its life cycle, even after 15 weeks.

Host status of some selected Brazilian upland rice cultivars to Meloidogyne incognita race 4 and Rotylenchulus reniformis

Nematology ◽  
2010 ◽  
Vol 12 (6) ◽  
pp. 929-934 ◽  
Author(s):  
Jerônimo V. de Araújo Filho ◽  
Andressa C.Z. Machado ◽  
Luiz C.C.B. Ferraz
Keyword(s):  
Meloidogyne Incognita ◽  
Upland Rice ◽  
Initial Population ◽  
Rice Cultivars ◽  
Rotylenchulus Reniformis ◽  
Nematode Reproduction ◽  
Central Brazil ◽  
Host Status ◽  
Race 4 ◽  
Reproduction Factor

Abstract Nowadays, rice is among the most preferred crops for rotation with soybean and cotton in the large producing areas of Central Brazil. Nevertheless, the host status of the Brazilian upland rice cultivars for Meloidogyne incognita race 4 and Rotylenchulus reniformis has not been investigated and remains unknown. This study dealt with the assessment of the host response of some selected Brazilian upland rice cultivars to these nematodes under glasshouse conditions. The host status for each tested interaction was based on the nematode reproduction factor (RF) and number of nematodes (g root)–1. Two experiments with M. incognita race 4, referred to as trial 1 (initial population (IP) = 4000) and trial 2 (IP = 800), included, respectively, 14 cultivars (cvs AN Cirad 141, BRS Monarca, BRS Primavera, AN Cambará, BRS Pepita, BRS Curinga, BRS Sertaneja, IAPAR 9, IAPAR 62, IAPAR 63, IAPAR 64, IAPAR 117, IAC 201, IAC 202) and 19 cultivars (the same ones in Experiment 1 plus cvs BRS Maravilha, BRS Talento, BRS Bonança, Ricetec Ecco, BRS Soberana). Except for cv. BRS Pepita, rated as resistant, the cultivars were rated as susceptible or moderately susceptible (RF means ranged from 1.09 to 12.56). In a third experiment with R. reniformis (IP = 1800) that included the same cultivars as in Experiment 1, all cultivars were rated as resistant (RF means ranged from 0.01 to 0.29).

scholarly journals Chia: Host Status for Meloidogyne incognita and Activity of Plant Extracts

Plant Disease ◽  
2020 ◽  
Vol 104 (11) ◽  
pp. 2979-2985
Author(s):  
Susan L. F. Meyer ◽  
Margaret H. MacDonald ◽  
Nathan D. Reetz ◽  
Mihail R. Kantor ◽  
Lynn K. Carta ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Egg Production ◽  
Animal Feed ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Plant Parts ◽  
Second Stage ◽  
Host Status ◽  
Cucumber Roots ◽  
Salvia Hispanica L

Chia (Salvia hispanica L.) seeds are used for food, drinks, oil, and animal feed, and all plant parts are employed in traditional medicine. The growing demand for the seed has created a need for improved disease management. Plant-parasitic nematodes have been found on other Salvia spp., but none have been reported from S. hispanica. Chia has also not been tested for production of compounds active against these nematodes. Therefore, aqueous extracts from shoots and roots of six chia lines, Brad’s Organic, Cono, E2, G3, G5, and W13.1, were tested in laboratory assays. Some concentrations of all extracts were nematotoxic, killing about one-third of Meloidogyne incognita (Kofoid & White) Chitwood second-stage juveniles (J2s) in shoot extracts and up to nearly half of J2s in root extracts. Hatch was generally not affected by the extracts. In greenhouse trials, all six chia lines were hosts of M. incognita. Chia line G3 had approximately two times or more eggs per gram of root than Brad’s Organic or Cono. When cucumber seedlings were transplanted into soil amended with chopped chia shoots (2.3 or 2.5% weight of fresh shoots/weight of dry soil), galling and egg production on cucumber roots were not suppressed. To our knowledge, this is the first report that chia is a host to M. incognita (or any phytoparasitic nematode) and that chia shoots and roots produce compounds active against a nematode.

Improving the use of rye (Secale cereale) for nematode management: potential to select cultivars based on Meloidogyne incognita host status and benzoxazinoid content

Nematology ◽  
2007 ◽  
Vol 9 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Cliff Rice ◽  
Inga Zasada ◽  
Susan Meyer
Keyword(s):  
Secale Cereale ◽  
Meloidogyne Incognita ◽  
Green Manure ◽  
Chemical Constituents ◽  
Host Suitability ◽  
Hairy Vetch ◽  
Vicia Villosa ◽  
Nematode Management ◽  
Cultivar Selection ◽  
Host Status

AbstractSix geographically diverse cultivars of rye (Secale cereale), a wheat (Triticum aestivum) cultivar and hairy vetch (Vicia villosa) cultivar unstated were screened for Meloidogyne incognita host suitability. Chemical constituents of rye can suppress M. incognita, so the rye cultivars and wheat were also tested for benzoxazinoid content to determine if rye cultivar selection could be based upon plant chemistry. There was variation in M. incognita host status among the rye cultivars. Cultivars Aroostook, Elbon, Oklon and Wrens Abruzzi were the most resistant rye cultivars, with low numbers of M. incognita eggs/g dry root. Cultivar Wheeler had somewhat more eggs/g root than these cultivars, while cv. Merced supported nearly three times more eggs/g root than cv. Wheeler. Most of the rye cultivars were similar to each other in total benzoxazinoid content, although cv. Aroostook had the lowest amount of total benzoxazinoids. When data from roots and shoots were combined, more than 79% of the total benzoxazinoids in all six of the rye cultivars were comprised of the non-methoxy-substituted forms: i) (2R)-2-β-D-glucopyranosyloxy-4-hydroxy-(2H)-1,4-benzoxazin-3(4H)-one (DIBOA-glucoside); ii) 2,4-dihydroxy-(2H)-1,4-benzoxazin-3(4H)-one (DIBOA); and iii) benzoxazolin-2(3H)-one (BOA). In the rye cultivar roots there was little difference among cultivars in amounts of the methoxy-substituted benzoxazinoids: i) (2R)-2-β-D-glucopyranosyloxy-4-hydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one (DIMBOA-glucoside); ii) 2,4-hydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one (DIMBOA); iii) 6-methoxy-benzoxazolin-2(3H)-one (MBOA); and iv) 2-hydroxy-7-methoxy-(2H)-1,4,-benzoxazzin-3(4H)-one (HMBOA). However, cv. Aroostook roots had the lowest concentration of non-methoxy-substituted benzoxazinoids. Rye cultivars were generally similar to each other in amounts of benzoxazinoids in shoots. The shoots had much lower concentrations of methoxy-substituted benzoxazinoinds than the roots but much higher concentrations of non-methoxy-substituted forms. Cultivars with the lowest numbers of eggs/g root and the highest amounts of benzoxazinoids (with potential for action against nematodes in soil after incorporation as a green manure) are possible candidates for optimal nematode management.

scholarly journals Host status of progenies of yellow passion fruit to Meloidogyne incognita race 2

2016 ◽  
Vol 16 (2) ◽  
pp. 153-157
Author(s):  
Roxana Stefane Mendes Nascimento ◽  
Everaldo Antônio Lopes ◽  
Carlos Eduardo Magalhães dos Santos ◽  
Viviane Manuela Bernardes Silva Magalhães ◽  
José Avelino Cardoso
Keyword(s):  
Meloidogyne Incognita ◽  
Passion Fruit ◽  
Host Status ◽  
Race 2 ◽  
Yellow Passion Fruit
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