Evidence for temporal virulence change in pearl millet downy mildew pathogen populations in India

Thakur, R P and Rao, V P and Sharma, R (2007) Evidence for temporal virulence change in pearl millet downy mildew pathogen populations in India. Journal of SAT Agricultural Research, 3 (1). pp. 1-3.

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Abstract

Downy mildew (DM) caused by Sclerospora graminicola is prevalent in most pearl millet (Pennisetum glaucum) growing parts of the semi-arid tropics. The pathogen is an obligate oomycetes and reproduces both by sexual and asexual processes. Heterothallism and sexual cross compatibility among the isolates of S. graminicola (Michelmore et al. 1982, Thakur et al. 2004, Pushpavathi et al. 2006a) lead to genetic and pathogenic variability in the pathogen population. Sporangia, the asexual spores, produced on the infected leaves help in secondary spread of the disease. In India, the disease is quite severe on single-cross F1 hybrids and causes substantial yield losses (Singh 1995, Thakur et al. 2003).

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Millets
Depositing User:	Library ICRISAT
Date Deposited:	27 Oct 2011 05:19
Last Modified:	27 Oct 2011 05:19
URI:	http://oar.icrisat.org/id/eprint/2591
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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