Screening of different genotypes of isabgul against aphid, Aphis gossypii Glover

Abstract

A field experiment was conducted during rabi, 2017-18 at Agronomy Instructional Farm of Chimanbhai Patel College of Agriculture, Sardarkrushinagar Dantiwada Agricultural University Sardarkrushinagar, Randomized Block Design (RBD) with three replications and twelve genotypes viz., JI 131, JI 159, JI 166, JI 174, JI 189, JI 221, JI 10-6, JI 10-7, JI 10-9, JI 10-10, GI 3, GI 4 genotypes/varieties of isabgul. Out of 12 genotypes/varieties of isabgul screened, three genotypes viz., JI 10-7, JI 10-10 and JI 189 were found resistant against Isabgul aphid, whereas, genotypes viz., JI 131, JI 10-6, GI 3, JI 10-9, JI 174, JI 166, JI 159, JI 221 and GI 4 were categorised as susceptible genotypes against aphid infestation. Genotypes JI 10-7 had recorded highest seed yield (963kgha-1) of isabgul. It was followed by JI 189 (938kgha-1) and JI 10-10 (923kgha-1).