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Thanatephorus cucumeris
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Rhizoctonia solani Kuhn (Teleomorph: Thanatephorus cucumeris) is a soil borne, polyphagous, necrotrophic plant pathogenic fungus with a wide host range. It is causing sheath blight disease on a wide range of Graminae plant hosts and causes considerable losses in yield. It incites banded sheath blight disease in small millets, with its characteristic copper brown band symptoms. Fifty three isolates of Rhizoctonia solani were obtained from four different small millets showing typical symptoms of the disease.
11p
chauchaungayxua11
23-03-2021
11
2
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The studies conducted on mode of perpetuation of sheath blight pathogen (Thanatephorus cucumeris) of rice (Oryza sativa L.) in/on rice seeds, plant debris and through sclerotia was studied at different placement conditions viz., on soil surface, at 5 cm soil depth and in-door under roof cover after crop harvest. The rice seeds were found to harbour externally viable pathogen up to five months from the harvest.
8p
trinhthamhodang1218
26-02-2021
11
2
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The present investigations were carried out to study the variability of R. solani isolates based on some cultural and morphological characters and correlate these characters with the identification of anastomosis group(s) of the fungal pathogen prevalent in Kashmir and the results are presented herein.
8p
trinhthamhodang1218
26-02-2021
15
2
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Different levels of P2O5 and K2O were evaluated for their effects on the disease incidence, intensity and grain yield were investigated in present investigations.
5p
trinhthamhodang1218
26-02-2021
10
2
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Six fungicides viz., captan 50 WP, copper oxychloride 50 WP, dodine 65 WP, mancozeb75 WP, propineb70 WP and zineb 80 WP were evaluated against rice sheath blight (Thanatephorus cucumeris). The in-vitro evaluation of these fungicides through poisoned food technique at five different concentrations viz., 50, 100, 200, 500 and 1000 µg a.i ml-1 indicated that mancozeb proved the most effective exhibiting mean mycelial growth inhibition of 95.26 per cent followed by captan and dodine with 93.80 and 93.66 per cent, respectively. Copper oxychloride proved least effective and resulted in only 44.
9p
caygaocaolon8
07-11-2020
9
2
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Variability in 20 isolates of Rhizoctonia solani Kühn [Teleomorph: Thanatephorus cucumeris (Frank) Donk] causing sheath blight of rice and weeds, was observed by RAPD and ISSR DNA analysis in conjunction with morphology and pathogenicity studies. Studies on morphological characterization of R. solani isolates showed that isolates were highly variable in mycelial growth, color and sclerotial parameters.
13p
nguathienthan5
04-06-2020
13
1
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Rhizoctonia solani Kühn [teleomorph :Thanatephorus cucumeris (Frank) Donk] is the most destructive and widely distributed soil borne pathogenic fungus causing black scurf of Potato. Cultural and morphological variability was studied in eleven potato isolates of R. solani collected from different potato growing areas including Haryana, Punjab, Uttarakhand, Rajasthan and Maharashtra etc. Based on the radial colony growth rate, all the isolates were categorised into 3 groups as slow, medium and fast growing. Majority of isolates showed slow colony growth rate.
8p
trinhthamhodang5
16-05-2020
15
1
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Banded leaf and Sheath blight of maize caused by Rhizoctonia solani f.sp. Sasakii [teleomorph: Thanatephorus cucumeris] is of worldwide occurrence and is known to cause substantial yield losses. It is a major production constraint in high yielding varieties under intensive maize production systems. The pathogen has a very wide host range and exhibits considerable pathogenic and molecular variability. Due to non-availability of highly resistant cultivars, the management of banded leaf and sheath blight primarily relies on chemical control.
9p
cothumenhmong3
22-02-2020
25
1
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Nấm Rhizoctonia solani thuộc bộ nấm trơ Mycelia Sterilia, lớp nấm bất toàn Fungi Imperfecti, giai đoạn sinh sản hữu tính được gọi là Thanatephorus cucumeris, thuộc lớp nấm Basidomycetes. Đây là nhóm nấm lớn, phân bố rộng, kí sinh không chuyên tính có phổ kí chủ rộng (Carling và ctv, 1992).
10p
zues02
18-06-2011
113
9
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