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Sheath blight study of rice
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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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There is a need to collect information on the off season survival of R. solani in rice ecosystem on different plant species. Considering the above reason, the present study was under taken by using different crops and weed species from rice growing ecosystem.
9p
trinhthamhodang1218
26-02-2021
3
1
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In the present study, attempt was made to find out the congenial period for sheath blight disease progression in different dates of sowing and its relation with various weather variables.
11p
cothumenhmong9
18-01-2021
6
2
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This study includes In-vivo analysis of seven new generation chemicals to test their efficacy in altering the host physiological traits in order to manage sheath blight, the devastative disease of rice caused by Rhizoctonia solani. Chemical treatment was given twice at 15 days interval.
7p
cothumenhmong9
18-01-2021
8
2
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Thirty two Rhizoctonia solani isolates were studied for molecular variability by RAPD technique at the Institute of Agri-biotechnology, University of Agricultural Sciences, Dharwad, India during 2007.
7p
gaocaolon9
22-12-2020
9
2
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The present experiment was carried out in the experimental farm of Regional Research and Technology Transfer Station (OUAT), Chiplima, Sambalpur, Odisha, during kharif 2013 and Rabi 2013-14 to determine the compatibility of selected insecticides and fungicides against major insect pests like stem borer, brown plant hopper and diseases like blast and sheath blight of rice.
7p
gaocaolon9
22-12-2020
12
2
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The study was conducted in Palamu district of Jharkhand to know the socioeconomic status of farmers. They were categorized in three groups i.e. small ,medium and large farmers which were differ from each other with regard to socio –economic factors and found that 54 per cent rice growers has medium level of knowledge .
7p
trinhthamhodang9
16-12-2020
8
1
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The present study focused on the effect of various seaweeds extracts and biocontrol agents on controlling sheath blight in rice caused by R.solani under in vitro condition. Use of biocontrol agents and sea weed extracts is an eco friendly, cost effective and sustainable alternative method in disease management.
10p
trinhthamhodang1216
19-11-2020
12
1
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In a search for an efficient biodegrader for the production of high quality biomanure, the present study was undertaken to probe the potentially of a new mushroom fungus viz., Lentinus connatus Berk, isolated from the dead woods of cashew (Lakshmanan, 2002), on comparison with existing biodegrader.
6p
angicungduoc8
07-11-2020
8
1
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Rice sheath blight, caused by Rhizoctonia solani, is one of the most devastating diseases for stable rice production in most rice-growing regions of the world. Currently, studies of the molecular mechanism of rice sheath blight resistance are scarce. Here, we used mutated rice population of the variety swarna induced by the sodium azide (NaN3). The variability in disease reaction was observed among mutated rice lines. Out of the total 1000 mutant plants, 47 plants were screened that show low disease index, ranged between 0 to 5 were selected for next generation.
8p
trinhthamhodang1215
23-09-2020
12
2
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The present study was conducted at the experimental farm of ICAR Research Complex for Eastern Region, Patna, India in Kharif season 2016 with an objective to identify sheath blight and bacterial leaf blight disease resistance rice genotypes under submergence condition in middle Indo Gangetic Plain. The disease incidence was observed at maturity stages during Kharif season 2016. The incidence of sheath blight and bacterial leaf blight of paddy ranged from 18.6 to 39.0% and 15.3 to 34.0%, respectively.
5p
trinhthamhodang7
31-08-2020
9
2
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Present study was undertaken to evolve an efficient and reliable measure for management of sheath blight of rice through application of judicious doses of plant nutrients. In this investigation, the effect of different doses i.e. control dose (naturally available in soil), deficient dose, recommended dose and excess dose of macronutrients (N, P &K) & micronutrients (S, Zn & Fe) were assessed on incubation period for first appearance of sheath blight, disease severity and on phenolic contents in inoculated rice plants.
12p
kethamoi7
26-08-2020
23
2
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Rice is an important staple food for more than half of the world’s population and is subject to diseases that often place major biological constraints on production. Sheath blight of rice is caused by a soil borne fungus and biological control of the disease is an efficient substitute to replace chemical methods. In the present study thirty native fluorescent Pseudomonads, an efficient biocontrol agent have been isolated and confirmed by cultural, morphological, biochemical characterization and visualization under UV light.
9p
angicungduoc6
20-07-2020
11
1
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Simultaneous increase of (CO2) and temperature causing significant changes in rice crop growth and productivity, but limited studies has been done in past to examine the interactive effect of these two key variables on the incidence of brown spot and sheath blight of rice.
8p
kethamoi6
29-06-2020
20
2
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The present study was carried out to assessment of genetic diversity and screening of sheath blight at the Research Farm of Department of Genetics and Plant Breeding, N.D. University of Agriculture & Technology, Narendra Nagar (Kumarganj), Faizabad. Results revealed that 22 genotypes were grouped into five different non-overlapping clusters. Cluster V, having 6 genotypes, emerged with highest number of entries. The maximum intra-cluster distance was found for cluster II (325.16) and highest inter-cluster distance was recorded between cluster IV and V (32140.59).
7p
chauchaungayxua6
26-06-2020
15
1
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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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Isozyme analysis/isozyme patterns of esterases and peroxidase of twenty eight isolates of the pathogen R. solani collected from maize (27) and one isolate from rice were used to study the variability among the isolates of R. solani through Polyacrylamide Gel Electrophoresis (PAGE) ) and polyphenol oxidases by Spectrophotometer.
18p
cothumenhmong4
23-03-2020
12
0
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Rice is a staple food for human being all over the world and India is the second largest producer and consumer of rice at global level. Production of rice in India is limited by several biotic and abiotic factors. Rice sheath blight (Rhizoctonia solani AG1-IA) is one of the most important factor causes significant grain yield and quality losses at worldwide. Yield losses of up to 50% have been reported under most conducive environments in India. Several uncultivated (weeds) and cultivated plant species are known to act as alternate and collateral hosts of R.
11p
caygaocaolon3
09-03-2020
10
1
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The CRISPR/Cas9 system has been used predominantly for precise editing of the plant genomes. In the present study, we have made an application of CRISPR/Cas9 system for targeted mutagenesis in rice(Oryza sativa L.) targeting the Phytochrome and Flowering Time 1 (PFT1) gene known to be involved in disease susceptibility in Arabidopsis for rootinfecting hemibiotrophic fungal pathogen Fusarium oxysporum. Hence, to confirm the role of OsPFT1 gene in rice sheath blight disease, CRISPR-Cas9 gene editing tool is being employed for generating OsPFT1 gene knock out in rice.
9p
chauchaungayxua3
07-02-2020
8
0
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