FACTORS AFFECTING CONIDIAL GERMINATION OF ERYSIPHE POLYGONI CAUSING POWDERY MILDEW OF FENUGREEK (TRIGONELLA FOENUM-GRAECUM L.)

REKHA KUMAWAT¹*, K.S. SHEKHAWAT², KAVITA KUMAWAT^3
1Department of Plant Pathology, S.K.N. College of Agriculture, Sri Karan Narendra Agriculture University, Jobner, 303329
²Department of Plant Pathology, S.K.N. College of Agriculture, Sri Karan Narendra Agriculture University, Jobner, 303329
³Department of Entomology, RCA, MPUAT, Udaipur
* Corresponding Author : vimalcomputer22@gmail.com

Received : 18-02-2016     Accepted : 10-03-2016     Published : 28-04-2016
Volume : 8     Issue : 14       Pages : 1232 - 1235
Int J Agr Sci 8.14 (2016):1232-1235

Keywords : Temperature, relative humidity, incubation periods, darkness and light, powdery mildew, fenugreek, conidial germination, Erysiphe polygoni
Academic Editor : Muske Deepa Navanath
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

The study was conducted to determine the factors affecting conidial germination of Erysiphe polygoni causing powdery mildew in fenugreek under controlled conditions. Result showed that maximum conidial germination of Erysiphe polygoni was recorded at 240C temperature, whereas at lower and higher than optimum temperature conidial germination was decreased significantly. All the levels of relative humidity favoured the conidial germination and maximum conidial germination was recorded at 90 per cent relative humidity. Combination of 240C temperature and 90 per cent relative humidity was best for maximum conidial germination. Maximum per cent conidial germination was recorded at 24C temperatures after 24 hours of incubation periods. Effect of darkness and light on conidial germination, highest per cent conidial germination was recorded in 10: 14 hours of darkness and light at 24°C after 24 hours of incubation period.