Evaluation of Genotypes against Bacterial Blight and Tobacco Streak Virus Diseases in Cotton

Cotton screening was conducted at the Regional Agricultural Research Station (RARS) in Warangal, Telangana, India. The experimental material consisted of 52 cotton germplasms and 13Bt cotton hybrids with a check were tested against bacterial blight and tobacco streak virus diseases duringKharif-2016 at RARS,Warangal. Out of 52 cotton germplasms,17 entries viz.,HYPS-152,H-1250,RAH-4,KH-2244N,LH-900,SA-434,RAH-12,JK-354,GBHU-164,NA-340,BS-37,TCH-724, ICMF-23,ICMF-20,SA-1004,ARB-89001 and BB-2 were found resistant to bacterial blight disease and eighteen entries namely.,SA-53-1,RHH-101,KH-2244N,KH-134,TCH-1649,NH-557,IH-08,PH-1008,TCH-724,JK-205,MRK-38,LH-2170,AKH-2822,ARB-8901,G-COT-10,JK2764,CCH 1071 and CCH-11germplasms were noticed tobacco streak virus disease rating scale 0 (Immune). Out of 13 Bt cotton hybrids , two entries viz., Balhwan and Raja were moderately resistant to bacterial blight disease and eleven entries namely viz., Bhakti, Raja, Balhwan, Akka, First class,RCH-812,Ankur-3224,ACH-199,RCH-836,RCH-812 and ATM entries were showed disease rating scale 1(resistant) to tobacco streak virus disease.