Antifungal Activity of Psoralea corylifolia Hairy Root Extract against Sugarcane Red Rot Pathogen under Controlled Condition Treatment Chamber Keywords: Hairy root, Antifungal activity, Sugarcane, Red rot ABSTRACT: Red rot disease is the major constraint for sugarcane production in India and the pathogen has gained virulence in recent years. About 33 % reduction in yield was observed and loss in sucrose and commercial cane sugar was estimated upto 32 to 50 % in average infections. The present investigation was carried out in sugarcane breeding institute, Coimbatore to study the effect of Psoralea corylifolia hairy root extract against high intensity Colletotrichum falcatum spore suspension (10 6 spores ml -1 ) causing red rot disease reaction in canes under Controlled Condition Treatment (CCT) Chamber. Nodal infection, green top, internodal discoloration and internal discoloration of the canes in CCT chamber were taken as the parameters for fixing the disease evaluation after 10 days of incubation. The results of CCT method authenticated the results obtained under laboratory conditions. The study revealed 100 per cent effectiveness of two per cent P. corylifolia hairy root extract over red rot pathogen infection when compared to canes treated only with spore suspension of C. falcatum. 173-179 | JRA | 2013 | Vol 2 | No 2 This article is governed by the Creative Commons Attribution License (http://creativecommons.org/ licenses/by/2.0), which gives permission for unrestricted use, non-commercial, distribution and reproduction in all medium, provided the original work is properly cited. www.jagri.info Journal of Research in Agriculture An International Scientific Research Journal Authors: Rajkumar D* and Murugesan R Institution: Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, – 641 003, Tamilnadu, India. Corresponding author: Rajkumar D Email: Web Address: http://www.jagri.info/ documents/AG0047.pdf. Dates: Received: 10 June 2013 Accepted: 01 July 2013 Published: 13 July 2013 Article Citation: Rajkumar D and Murugesan R. Antifungal Activity of Psoralea corylifolia Hairy Root Extract against Sugarcane Red Rot Pathogen under Controlled Condition Treatment Chamber. Journal of Research in Agriculture (2013) 2(2): 173-179 Original Research Journal of Research in Agriculture Journal of Research in Agriculture An International Scientific Research Journal
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Antifungal activity of psoralea corylifolia hairy root extract against sugarcane red rot pathogen under controlled condition treatment chamber
Red rot disease is the major constraint for sugarcane production in India and the pathogen has gained virulence in recent years. About 33 % reduction in yield was observed and loss in sucrose and commercial cane sugar was estimated upto 32 to 50 % in average infections. The present investigation was carried out in sugarcane breeding institute, Coimbatore to study the effect of Psoralea corylifolia hairy root extract against high intensity Colletotrichum falcatum spore suspension (106 spores ml-1) causing red rot disease reaction in canes under Controlled Condition Treatment (CCT) Chamber. Nodal infection, green top, internodal discoloration and internal discoloration of the canes in CCT chamber were taken as the parameters for fixing the disease evaluation after 10 days of incubation. The results of CCT method authenticated the results obtained under laboratory conditions. The study revealed 100 per cent effectiveness of two per cent P. corylifolia hairy root extract over red rot pathogen infection when compared to canes treated only with spore suspension of C. falcatum.
Article Citation: Rajkumar D and Murugesan R. Antifungal Activity of Psoralea corylifolia Hairy Root Extract against Sugarcane Red Rot Pathogen under Controlled Condition Treatment Chamber. Journal of Research in Agriculture (2013) 2(2): 173-179.
Full Text: http://www.jagri.info/documents/AG0047.pdf
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Antifungal Activity of Psoralea corylifolia Hairy Root Extract against Sugarcane
Red Rot Pathogen under Controlled Condition Treatment Chamber
Keywords: Hairy root, Antifungal activity, Sugarcane, Red rot
ABSTRACT: Red rot disease is the major constraint for sugarcane production in India and the pathogen has gained virulence in recent years. About 33 % reduction in yield was observed and loss in sucrose and commercial cane sugar was estimated upto 32 to 50 % in average infections. The present investigation was carried out in sugarcane breeding institute, Coimbatore to study the effect of Psoralea corylifolia hairy root extract against high intensity Colletotrichum falcatum spore suspension (106 spores ml-1) causing red rot disease reaction in canes under Controlled Condition Treatment (CCT) Chamber. Nodal infection, green top, internodal discoloration and internal discoloration of the canes in CCT chamber were taken as the parameters for fixing the disease evaluation after 10 days of incubation. The results of CCT method authenticated the results obtained under laboratory conditions. The study revealed 100 per cent effectiveness of two per cent P. corylifolia hairy root extract over red rot pathogen infection when compared to canes treated only with spore suspension of C. falcatum.
173-179 | JRA | 2013 | Vol 2 | No 2
This article is governed by the Creative Commons Attribution License (http://creativecommons.org/
licenses/by/2.0), which gives permission for unrestricted use, non-commercial, distribution and reproduction in all medium, provided the original work is properly cited.
www.jagri.info
Journal of Research in
Agriculture An International Scientific
Research Journal
Authors:
Rajkumar D* and
Murugesan R
Institution:
Department of Agricultural
Microbiology, Tamil Nadu
Agricultural University,
Coimbatore, – 641 003,
Tamilnadu, India.
Corresponding author:
Rajkumar D
Email:
Web Address:
http://www.jagri.info/
documents/AG0047.pdf.
Dates: Received: 10 June 2013 Accepted: 01 July 2013 Published: 13 July 2013
Article Citation: Rajkumar D and Murugesan R. Antifungal Activity of Psoralea corylifolia Hairy Root Extract against Sugarcane Red Rot Pathogen under Controlled Condition Treatment Chamber. Journal of Research in Agriculture (2013) 2(2): 173-179
Original Research
Journal of Research in Agriculture
Jou
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A
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An International Scientific Research Journal
INTRODUCTION
Sugarcane is one of the most important cash
crops grown in India, for its adaptability to be cultivated
under a wide range of climate, cultural and soil
conditions. This crop occupies 2.8 % of cultivated area
and contributes to the tune of 7.5 % of agricultural
production of the country. Sugarcane crop is one among
the important cash crops in India and a main source of
white crystal sugar and also provides ‘gur’ and
‘khandasari’ (brown sugar)which are the main substitute
of sugar. In India about 35 million farmers involved in
sugarcane cultivation and about 50 million people
depend on depend on sugar factories and other related
industries for their employment. Different pathogens viz.,
fungi, bacteria, viruses and phytoplasmas infects
sugarcane crop (Agnihotri, 1990). In India, the red rot
disease caused by fungus Colletotrichum falcatum
(Went, 1893) is considered as very serious disease where
sugarcane is cultivated. The disease was responsible for
the elimination of many elite sugarcane varieties
(Beniwal et al., 1989). Various chemical fungicides are
available for the control of red rot in sugarcane. As
sugarcane is a long duration crop, the treatment of sett
with fungicides will not be sufficient to protect
sugarcane crop from red rot pathogen (Viswanathan,
2010). The use of synthetic fungicide leads to several
problems such as residue in food and feed, pathogen
resistance, toxicity to non target organism and
environmental pollution in different agricultural
ecosystems. In addition to these, elimination of soil born
inoculum through chemicals is difficult and costly; and
development of resistant varieties through breeding
methods is long term endeavour (Alexander and
Viswanathan, 1996). Therefore, with the increasing
public awareness of environmental safety and persistent
demand for ecofriendly products, we are forced to
produce quality products both for export and domestic
consumption. Hence, an alternative approach is the use
of botanicals in management of this disease which are
eco friendly in nature, in addressing the problem (Ahmad
et al., 1998). Botanicals are the rich sources of secondary