S. Chandra et al., SCREENING AND STABILITY ANALYSIS OF GROUNDNUT (ARACHIS-HYPOGAEA) FOR RESISTANCE TO EARLY LEAF-SPOT (CERCOSPORA-ARACHIDICOLA), Indian Journal of Agricultural Sciences, 65(12), 1995, pp. 876-879
An experiment was conducted during the rainy season of 1991-93 to eval
uate 25 genotypes of groundnut (Arachis hypogaea L.) for their resista
nce and stability to disease reaction of early leaf-spot (Cercospora a
rachidicola Hori.) at Barapani. Disease severity was moderate in 1991
and 1992, whereas it was high in 1993 causing heavy defoliation in the
susceptible control ('JL 24'). All the genotypes showed less early le
af-spot score compared with the control indicating satisfactory level
of resistance. Significant genotype x environment (G x E) interaction
was observed for disease reaction. Both linear and non-linear componen
ts of G x E interaction were significant. Genotypes 'ICGV 86020', 'ICG
V 86680: and 'ICGV 87350' were found stable and promising for low-dise
ase reaction in different years.