author(s)
AW More, RR Dhutmal, Sayad Asgar and JE Jahagirdar

abstract
116 sorghum germplasm lines and four checks (One resistant check IS-18851, one susceptible check DJ-6514 and two varietal checks SPV-1411 and PVK-801) were evaluated to find out the genetic components of variation, heritability and correlation for grain yield and shoot fly resistance traits in sorghum germplasm lines. The germplasm lines were planted in randomized block design with two replications during rabi 2015-16 at Sorghum Research Station, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani. Observations were recorded on five randomly selected plants in each plot and replication for grain yield, yield contributing traits and following shoot fly tolerant associated traits from each replication. Wide range of variation was observed for shoot fly resistance and yield contributing characters. GCV ranged from 3.49% (days to maturity) to 111.53% (abaxial trichome density) and PCV ranged from 3.87% to 111.66%. higher GCV along with high heritability and genetic advance exhibited by traits dead hearts at 14 and 28 DAE, trichome density (abaxial and adaxial) and plumule & leaf sheath pigmentation. Glossiness, seedling vigour, leaf wetness and chlorophyll content were significant and positively correlated with dead heart percentage at 14 and 28 DAE at both the genotypic and phenotypic levels. While it had shown negative significant association with trichome density (adaxial and abaxial) surface, plant height, leaf length, leaf breadth and grain yield per plant at both genotypic and phenotypic level. From present study it is concluded that traits viz., number of trichomes at adaxial and abaxial surfaces of lamina, leaf glossiness, seedling vigour, plumule leaf pigmentation played important role in shootfly resistance and also exhibited high GCV, heritability and high to moderate genetic advance and significantly positive association for shoot fly dead heart percent will be effective for improving shoot fly resistance through breeding programme.