scholarly journals Biochemical factors and enzymes governing resistance in Indian mustard (Brassica juncea) against Sclerotinia stem rot (Sclerotinia sclerotiorum)

2014 ◽  
Vol 8 (36) ◽  
pp. 3295-3306
Author(s):  
Kishan Bairwa Shri ◽  
Lal Godara Shankar ◽  
Kumar Pardeep ◽  
Chand Bairwa Ramesh ◽  
Gangopadhyay Samiran
Keyword(s):  
Brassica Juncea ◽  
Sclerotinia Sclerotiorum ◽  
Indian Mustard ◽  
Stem Rot ◽  
Sclerotinia Stem Rot

STUDIES ON FIELD EVALUATION OF BRASSICA GERMPLASM/VARIETIES AGAINST SCLEROTINIA SCLEROTIORUM UNDER INOCULATED CONDITION

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
PRAMOD KUMAR FATEHPURIA ◽  
RAJNI S. SASODE ◽  
DEVASHISH R. CHOBE ◽  
VEERENDRA GUPTA ◽  
REETI SINGH
Keyword(s):  
Plant Pathology ◽  
Sclerotinia Sclerotiorum ◽  
Block Design ◽  
Indian Mustard ◽  
Field Evaluation ◽  
Stem Rot ◽  
Sclerotinia Stem Rot ◽  
College Of Agriculture ◽  
Centre Of Origin ◽  
Sclerotinia Blight

Indian mustard, Brassica juncea belong to Brassicaceae and Centre of origin Mideterian. Sclerotinia stem rot/ blight caused by Sclerotinia sclerotiorum is one of the most important fungal diseases in rapeseed and other crops in the world. The present study was undertaken to access the forty seven germplasm/varieties to find out the resistance against S. sclerotiorum under inoculated condition. The reaction of forty-seven germplasm was evaluated in randomized complete block design with thrice replications at the experimental field, Department of Plant Pathology, College of Agriculture, Gwalior during Rabi season 2014-15 and laboratory work was done in the Department of Plant Pathology, College of Agriculture, Gwalior (M.P.). Observations for severity of stem rot on main stem were recorded after 120 days of sowing using 0 - 4 scale. (Assessment scale 0-4 where 0 = no disease (resistance), 1 = less than half stem girdled (moderate resistance), 2 = more than half stem girdled (susceptible), 3 = whole stem girdled (moderate susceptible), 4 = plant dead (highly suscepitble). Forty-seven germplasm/varieties were evaluated for their reaction against Sclerotinia blight (Sclerotinia sclerotiorum). Out of forty seven germplasm / varieties, tested two Cultivar SBG-14-5 and SBG-14- 6 gave highly resistance reactions, while twenty six varieties are found resistant SBG-14-2, SBG-14-3, SBG-14-4, SBG-14-7, SBG-14-8, SBG-14-9, SBG-14-10, SBG-14-11, SBG-14-13, SBG14-15, SBG-14-17, SBG-14-18, SBG-14-23, SBG-14-27, SBG-14-28, SBG-14-30, SBG-14-31, SBG-14-32, SBG-14-33, SBG-14-34, SBG-14-35, SBG-14-36, SBG- 14-41, SBG-14-42, NDNSR-14-76, NDNSR-14-77, twelve varieties are found susceptible SBG-14-1, SBG-14-12, SBG- 14-14, SBG-14-16, SBG-14-21, SBG-14-22, SBG-14-24, SBG-14-26, SBG-14-29, SBG-14-37, SBG-14-39, SBG-14-40 and seven varieties SBG-14-19, SBG-14-20, SBG-14-25, SBG-14-38, Varuna, Rohini and BIOYSR were found highly susceptible against Sclerotinia blight (Sclerotinia sclerotiorum).

scholarly journals Effects of fertilizers and soil amendments on the incidence of Sclerotinia stem rot in Indian mustard (Brassica juncea L.)

2014 ◽  
Vol 8 (42) ◽  
pp. 3650-3655
Author(s):  
Kishan Bairwa Shri ◽  
Lal Godara Shankar ◽  
Meena Susheela ◽  
Kumar Jatav Narendra ◽  
Chand Bairwa Ramesh
Keyword(s):  
Brassica Juncea ◽  
Soil Amendments ◽  
Indian Mustard ◽  
Stem Rot ◽  
Sclerotinia Stem Rot

Expression of field resistance under Western Australian conditions to Sclerotinia sclerotiorum in Chinese and Australian Brassica napus and Brassica juncea germplasm and its relation with stem diameter

2006 ◽  
Vol 57 (10) ◽  
pp. 1131 ◽  
Author(s):  
C. X. Li ◽  
Hua Li ◽  
K. Sivasithamparam ◽  
T. D. Fu ◽  
Y. C. Li ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Brassica Juncea ◽  
Sclerotinia Sclerotiorum ◽  
Stem Diameter ◽  
Stem Rot ◽  
Lesion Length ◽  
Sclerotinia Stem Rot ◽  
Sources Of Resistance ◽  
Stem Lesion ◽  
Western Australian

Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, has become one of the most serious disease problems in oilseed rape-growing areas in Australia. Sources of resistance to this disease have been sought worldwide. In this study, germplasm comprising 42 Brassica napus and 12 Brassica juncea accessions from China and Australia, was screened for resistance to Sclerotinia stem rot under Western Australian field conditions. Resistance was confirmed in some germplasm from China and new sources of resistance were identified in germplasm from Australia. Furthermore, our study found that the severity of stem lesions was related to stem diameter and percentage of the host plants that were dead. It was evident that both stem lesion length and percentage of plant death were at the lowest level when the stem diameter was approximately 10 mm. Smaller or greater stem diameter resulted both in increased stem lesion length and plant death. Stem diameter may be a useful parameter in breeding cultivars of oilseed Brassicas with Sclerotinia resistance.

scholarly journals Evaluation of fungicides for the control of Sclerotinia stem rot of Indian mustard caused by Sclerotinia sclerotiorum (Lib.) de Bary

2016 ◽  
Vol 8 (1) ◽  
pp. 441-444
Author(s):  
Rakesh Rakesh ◽  
A.S. Rathi ◽  
Anil Kumar ◽  
Hawa Singh
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
Seed Yield ◽  
Untreated Control ◽  
Mycelial Growth ◽  
Disease Incidence ◽  
Indian Mustard ◽  
Stem Rot ◽  
Sclerotinia Stem Rot ◽  
Foliar Sprays

The current investigation was carried out under -in vitro and under sick plot conditions of the Department of Plant Pathology, CCS Haryana Agricultural University, Hisar to test the efficacy of different fungicides against Sclerotinia sclerotiorum. The experiment was carried out through poison food technique under in vitro conditions andthrough foliar sprays under sick plot conditions. Efficacy of fungicides in vitro against S. sclerotiorum showed that carbendazim and hexaconazole completely inhibited mycelial growth up to 100 per cent at 50 ppm concentration. Propiconazole inhibited 96.39 per cent mycelial growth at 50 ppm and 100 per cent at 1000 ppm, while tricyclazole failed to inhibit mycelial growth up to 100 ppm, however, at 1000 ppm concentration, there was 100 per cent mycelial inhibition. Mancozeb and captan completely inhibited up to 100 per cent mycelial growth at 500 ppm concentration. Copper oxychloride and pencycuron were not effective at lower concentrations but had inhibited 45.28 and 22.50 per cent mycelial growth at 1000 ppm. Field experiment was conducted to test the efficacy of those fungicides which were found best under in vitro conditions. All the four fungicides tested significantly controlled Sclerotinia stem rot disease and increased the seed yield as compared to untreated control. Two Foliar sprays with hexaconazole @ 0.05% at 45 and 60 days after sowing was found most effective in controlling disease incidence up to 78.3 per cent and increasing seed yield up to 37.6 per cent as compared to untreated control.

Prevalence of sclerotinia stem rot of canola in New South Wales

2003 ◽  
Vol 43 (2) ◽  
pp. 163 ◽  
Author(s):  
T. L. Hind ◽  
G. J. Ash ◽  
G. M. Murray
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
New South ◽  
New South Wales ◽  
Stem Rot ◽  
Sclerotinia Stem Rot ◽  
Mean Values ◽  
Stem Infection ◽  
South Wales

Surveys of petal infestation and stem infection conducted in 1998, 1999 and 2000 indicated that Sclerotinia sclerotiorum poses a threat to the Australian canola industry. Inoculum was present throughout all canola-growing regions of New South Wales and the stem disease was widespread throughout southern New South Wales. Percentage petal infestation increased over the 3 years surveyed with values ranging from 0 to 99.4%. The highest petal infestation values were observed in 2000 (maximum of 99.4%, mean of 82.2%), with lower mean values in 1998 (38.4%) and 1999 (49.6%). Stem infection ranged from 0 to 37.5% and most fields had less than 10% stem infection. Stem rot incidence before harvest did not relate to percentage petal infestation determined during flowering. This indicated that factors other than percentage petal infestation were important in influencing stem rot incidence. While there was no relationship between percentage petal infestation and stem rot incidence, stem infection never occurred without prior petal infestation.

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