Unravelling Effects of Temperature and Soil Moisture Stress Response on Development of Dry Root Rot [Rhizoctonia bataticola (Taub.)] Butler in Chickpea

Sharma, M and Pande, S (2013) Unravelling Effects of Temperature and Soil Moisture Stress Response on Development of Dry Root Rot [Rhizoctonia bataticola (Taub.)] Butler in Chickpea. American Journal of Plant Sciences, 4 (3). pp. 584-589. ISSN 2158-2750

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Abstract

Erratic rainfalls and rise in temperature have become more frequent under the changing scenario of climate particularly in semiarid tropics. As a consequence of it, a drastic shift of chickpea diseases have been recorded throughout the major chickpea growing regions in India and elsewhere. Dry root rot (DRR) caused by Rhizoctonia bataticola (Taub.) Butler [Pycnidial stage: Macrophomina phaseolina (Tassi) Goid] was found as a potentially emerging constraint to chickpea production than wilt (Fusarium oxysporum f. sp. ciceris). Increasing incidence of DRR indicate strong influence of climate change variables such as temperature and moisture on the development of disease. The present study therefore was conducted to quantify the role of temperature and soil moisture associated with infection, colonization and development of DRR under controlled environment. The DRR incidence was significantly affected by high temperature and soil moisture deficit. Out of five temperature regimes (15?C, 20?C, 25?C, 30?C and 35?C) and four moisture levels (40%, 60%, 80% and 100%), a combination of high temperature (35?C) and soil moisture content (60%) predisposes chickpea to DRR. The study clearly demonstrates that high temperature coupled with soil moisture deficit is the climate change variables predisposing chickpea to R. bataticola infection, colonization and development.

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: Chickpea; Climate Change; Drought; Dry Root Rot; Soil Moisture; Temperature
Subjects: Mandate crops > Chickpea
Others > Plant Pathology
Others > Agriculture-Farming, Production, Technology, Economics
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 06 Apr 2013 05:05
Last Modified: 06 Apr 2013 09:32
URI: http://oar.icrisat.org/id/eprint/6719
Official URL: http://dx.doi.org/10.4236/ajps.2013.43076
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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