EVALUATION OF PEANUT GENOTYPES RESISTANCE TO LEAF SPOT (Cercospora personatum) AND RUST DISEASE (Puccinia arachidis)

Sumartini -

Abstract


The study was conducted in the greenhouse of Malang Research Institute for Legumes and Tuber Crops,
July ‐ October 2013. Twenty peanut genotypes were tested, each genotype were planted in five plastic pots
(Φ = 30cm), 2 peanut seeds/pot. Inoculation of rust spore suspension (density of 20,000 spores / ml ) at 3
weeks after planting by spraying it to the leaves of peanut. Rust disease observation was done by given a
value to the leaves that covered leaf spot or rust disease and refers to Subramamyam (1995 ). Out of 17 peanut
genotypes tested, one genotype was resistant (R) , 8 genotypes were moderately resistant (MR), 8
genotypes were moderately susceptible (MS) against leaf spot disease. Moreover three genotypes were
resistant (R), three genotypes were moderately resistant (MR) , 10 genotypes were moderately susceptible
(MS) , and one genotype was susceptible (S) against rust diseases.
Keywords: peanut, leaf spot and rust disease, resistance.