Wyniki wyszukiwania - Biblioteka Nauki

1

The reaction of tomato plants carrying Mi-1 gene to different inoculation densities of Meloidogyne incognita (Kofoid and White, 1919) Chitwood, 1949

100%

Özalp T. , Mıstanoğlu İ. , Devran Z.

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nr 2

2

Charcoal rot and root-knot nematode control on faba bean by photosynthesized colloidal silver nanoparticles using bioactive compounds from Moringa oleifera leaf extract

86%

Mohamed Y. M. A. , Osman S. A. , Elshahawy I. E. , Soliman G. M. , Ahmed A. M. A. , Mohamed Y. M. A. , Osman S. A. , Elshahawy I. E. , Soliman G. M. , Ahmed A. M. A.

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3

The reaction of tomato plants carrying Mi-1 gene to different inoculation densities of Meloidogyne incognita (Kofoid and White, 1919) Chitwood, 1949

72%

Ozalp T. , Mistanoglu I. , Devran Z.

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nr 2

EN

The response of the Mi-1 gene to different densities of Meloidogyne incognita race 2 was investigated under controlled conditions. Susceptible and resistant tomato seedlings were inoculated with 25, 50, 100, 200, 400, 1000, 2000, 5000 and 10 000 second-stage juveniles of M. incognita. Plants were uprooted 8 weeks after inoculation and the numbers of egg masses and galls on the roots, and second-stage juveniles in 100 g soil per pot were counted. In susceptible plants, there was a correlation between the number of egg masses on roots until 2000 J2 inoculum densities. In resistant plants, when inoculum densities increased, the number of egg masses and galls also increased. The reproduction factor ratio was >1 in the susceptible plant and <1 in the resistant plant. The data showed that the 5000 J2 inoculum was a critical limit, and 10 000 J2s were above threshold for resistant plants. The data indicate that densities of M. incognita can seriously affect the performance of the Mi-1 gene.

4

Mi-tomato responses to two-spotted spider mite attack

72%

Godzina-Sawczuk M. , Karolczyk S. , Kielkiewicz M.

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nr 2

5

Evaluation of efficacy of Paecilomyces lilacinus as biological control agent of Meloidogyne incognita attacking tomato

72%

Oclarit E. L. , Cumagun C. J. R.

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nr 4

337-340

EN

The efficacy of Paecilomyces lilacinus strain UP1 as biological control agent of Meloidogyne incognita attacking tomato was evaluated under screenhouse condition pot experiments. P. lilacinus was formulated on rice substrate in powder form. Root weight, gall index rating, number of galls, egg masses and nematodes per one gram root sample were determined and per cent reduction in gall number was computed. Root weight and gall index ratings were significantly higher in untreated plants than those with P. lilacinus and with the commercial fungicide Nemacur. Number of galls, nematodes and egg masses per one gram root sample were significantly reduced by the application of P. lilacinus at all levels and this was comparable with Nemacur. However, egg mass count in plants treated with the lowest concentration of the biocontrol agent was not significantly different from the uninoculated control. Per cent reduction in gall number was the highest at treatment with 7.92 × 106 spores per ml of P. lilacinus.

PL

W doświadczeniu wazonowym prowadzonym w warunkach szklarniowych, oceniano skuteczność Paecilomyces lilacinus jako czynnika biologicznego zwalczania Meloidogyne incognito, atakującego pomidory. Przygotowano formulację P. lilacinus na podłożu z ryżu, w sproszkowanej formie. Określano wagę korzeni, indeks występowania narośli, liczbę narośli, masę jaj i nicieni, w jednym gramie próby korzeni oraz obliczano procent redukcji liczby narośli na korzeniach roślin traktowanych grzybem P. lilacinus. Waga korzeni i indeks występowania narośli były istotnie wyższe w przypadku roślin nietraktowanych P. lilacinus, w porównaniu do roślin traktowanych tym grzybem, lub fungicydem Nemacur. Liczba narośli, nicieni i masa jaj, w jednym gramie próby, były istotnie zredukowane w wyniku potraktowania ich różnymi dawkami P. lilacinus, co było porównywalne z zastosowaniem preparatu Nemacur. Jednak masa jaj po zastosowaniu najniższej dawki czynnika biologicznego zwalczania nie różniła się istotnie od nietraktowanej nim kontroli. Procent redukcji liczby narośli był najwyższy w kombinacji - 7,92 × 106 zarodników P. lilacinus w 1 mililitrze.

6

Interactions between Meloidogyne incognita [ Kofoid et White ] Chitwood and Botrytis cinerea Pers. on the tomato

72%

Janowicz K. , Mazurkiewicz-Zapalowicz K.

Phytopathologia Polonica

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1994

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tom 07

7

Mikroorganizmy glebowe ograniczające populacje nicieni

58%

Janowicz K. , Mazurkiewicz-Zapalowicz K.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Konferencje

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1998

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tom 18

8

Pathogenicity of Meloidogyne incognita on Sesamum indicum and the efficacy of yield-based scheme in resistance designation

58%

Atungwu J. J. , Afolami S. O. , Egunjobi O. A. , Kadri O. A.

Journal of Plant Protection Research

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2008

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tom 48

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nr 1

73-80

EN

Two screenhouse experiments were conducted in 2004 and 2005 rainy season to investigate the reaction of three selected Sesamum indicum cultivars against three population densities of a root knot nematode, Meloidogyne incognita. Seedlings of S. indicum were raised in pots arranged in completely randomised design and inoculated with 0, 5 000, and 10 000 eggs of M. incognita, replicated six times. Root knot disease was evaluated at mid-season and harvest. A new method for evaluating and reporting resistance to Meloidogyne spp. that divides the screening procedure into two phases in the same experiment was adapted. The first phase investigated the host response through the traditional standard method that utilises only gall and nematode reproduction indices, while the second considered the effect of root knot disease on grain production of the crop. There was consistency in host designation of E8 and NICRIBEN-01M (syn: 530-1-6) which were classified under the traditional and improved rating schemes as tolerant and resistant, respectively. However, S. indicum breeding line Pbtil (No. 1) which was considered susceptible under the old system was found to be tolerant using the integrated and improved system. Root galls incited by the nematode degenerated significantly from mid-season to harvest time. Utilising yield as additional parameter for assessing resistance to root knot nematode provides a complete picture of Sesamum-Meloidogyne interaction, and therefore a more meaningful system for determining host response.

PL

W porze deszczowej 2004 i 2005 r. przeprowadzono dwa doświadczenia pod osłonami mające na celu zbadanie reakcji trzech wybranych odmian Sesamum indicum na trzy gęstości populacji guzaka korzeniowego, Meloidogyne incognita. Rozsady S. indicum hodowano w doniczkach w układzie całkowicie zrandomizowanym i inokulowano 0, 5 000 oraz 10 000 jaj M. incognita, w sześciu powtórzeniach. Postęp choroby oceniano w połowie sezonu hodowlanego i podczas zbiorów. W celu oceny i opisu odporności na Meloidogyne ssp. zaadaptowano nową metodę, która dzieli procedurę klasyfikacji na dwie fazy w tym samym doświadczeniu. W pierwszej fazie reakcję badano tradycyjną, standardową metodą wykorzystującą tylko indeksy wyrośli i reprodukcji nicieni, natomiast w drugiej wzięto także pod uwagę wpływ choroby na produkcję ziarna w uprawie. Według obydwu podejść, tradycyjnego i ulepszonego, żywicieli E8 i NICRIBEN-01M (syn: 530-1-6) zgodnie zaklasyfikowano jako odpowiednio tolerancyjnego i odpornego. Jednakże, linia hodowlana S. indicum Pbtil (No. 1), uważana za podatną według starego systemu okazała się tolerancyjna według systemu zintegrowanego i ulepszonego. Liczba wyrośli na korzeniach powodowanych przez nicienie zmniejsza się począwszy od połowy sezonu hodowlanego do zbiorów. Użycie plonu jako dodatkowego parametru do oceny odporności roślin na guzaki korzeniowe uzupełnia obraz wzajemnego oddziaływania Sesamum-Meloidogyne z czego wynika przejrzystszy system określania reakcji rośliny żywicielskiej.

9

Growth and yield responses of fifteen cucumber cultivars to root-knot nematode (Meloidogyne incognita)

44%

Mukhtar T. , Kayani M. Z.

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2019

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tom 18

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nr 3

EN

Root-knot nematodes have become a grave menace to the lucrative production of cucumber throughout the world. These nematodes are mainly controlled by applying nematicides, but their use is often associated with hazards. Alternatively, the use of nematode resistant cultivars is considered to be innocuous and economically feasible. For their fitness as nematode-suppressive crops, the reduction in growth and yield parameters of these cultivars must be assessed. As there is little documented data about the effects of Meloidogyne incognita on the damage of cucumber, therefore, in the present study, the effects of M. incognita were evaluated on growth and yield parameters of fifteen cucumber cultivars. M. incognita significantly negatively affected the growth and yield parameters of all the cucumber cultivars. Shoot and root lengths and shoot weights of all the cultivars were significantly reduced as a result of nematode infection. Maximum reductions in these parameters were recorded in highly susceptible cultivars followed by susceptible ones, while the reductions were minimal in resistant followed by moderately resistant cultivars. On the contrary, the infection by M. incognita resulted in an increase in root weights of all the cultivars. The increase was found to be the maximum in highly susceptible cultivars followed by susceptible and moderately susceptible cultivars. Likewise, the minimum increase was observed in the resistant cultivars followed by moderately resistant cultivars. Similarly, significant variations in yield parameters among fifteen cucumber cultivars were also recorded as a result of M. incognita infection. In the case of highly susceptible cultivars, the reductions in yield parameters were maximum, whereas the reductions in resistant and moderately resistant cultivars were found to be minimum. As cultivars Long Green, Marketmore, Pioneer-II, Dynasty and Summer Green experienced no significant damage compared to susceptible cucumber cultivars and therefore, they are approved for cultivation in nematode infested soils.