Vol. 12, Issue 1 (2023)

Author(s):
SR Thakur

Abstract:
The present investigation of screening of Twenty five advanced breeding lines of sorghum along with three replications against earhead bugs (Calocoris angustatus Leth) and Ear head worms (Contarinia sorghicola Coq )was carried out in randomized block design (RBD) at research field ,RVVS, College of Agriculture ,Indore (M.P) in collaboration with all India Coordinated Sorghum Improvement Project (AICSIP), Indore (M.P), India. The advanced breeding lines were screened on the basis of Population were counted on / 10 plant per heads of each genotype randomly selected at milky stage separately. The data recorded on ear bug population exhibited significant difference among 25 genotype .The minimum bug population was recorded in genotype IS-2312(1.11),SPH-1574(1.22), CSH-18(1.55) SPH-1569(1.75), CSV17(1.81), and SPH-1571(1.88), The maximum bugs population was recorded in genotype, SPH-1570(3.55) and followed by DJ-6514(3.08), SPH-1573(3.11) SPH-1566(3.08) and SPH-1562(3.04). Ear head worms (Contarinia sorghicola) .The data recorded on ear bug population exhibited significant difference among 25 genotype. The observation were recorded at 45 days after sowing at ear heads/plant. The minimum head worms population was recorded in genotype CSH-18(0.24), SPH-1564(0.35), IS-2312(0.37), SPH-1561(0.53), SPH-1564(0.62), SPH-1565(0.68), SPH-1571(0.68), and SPH-1577(0.68) /plant .The maximum ear head worms population was recorded in genotype, SPH-1570(3.50) and followed by SPH-1572(3.11) DJ-6514(3.11). The values were subjected to square root transformation value and statically analyzed.