Field Evaluation of Potato Germplasm for Resistance to Alternaria solani

Twenty five genotypes of potato were screened for resistance to early blight during the spring seasons of 2008 and 2009 in the Experimental field of Division of Plant Pathology, Sheri Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar. The study revealed that under natural epiphytotic conditions only one genotype i.e., SM/92–338 exhibited tolerant reaction. The three other genotypes, viz., Kufri Himami, SM/96–27 and SM/94–44 were moderately tolerant. Nine genotypes, viz., Kufri Girdari, Kufri Shailja, Kufri Chandramukhi, SM/98–239, SM/93–237, SM/90–45, HB/82–18, HB/50–45 and Shalimar Potato-1 were moderately susceptible. The remaining genotypes were either susceptible or highly susceptible in reaction.