The present study was carried out with 26 derived lines for shoot fly resistance and three checks, to estimate the various variability parameters and heritability. Two sets of planting were done, first planting was done to record observations on yield and yield contributing traits. Second planting was done for screening of shoot fly reaction under artificial epiphytic conditions; late planting technique and infector row technique were used for creating sufficient shoot fly pressure. The analysis of variance revealed that significant difference among genotypes for all the traits, suggesting presence of wide range of variation among the genotypes for all the characters under study. Mean values for the lines AKENT - 101, AKENT - 104, AKENT - 107, AKENT - 117, AKENT - 123, AKENT – 125 and IS 18551, showed shoot fly reaction, these lines exhibiting comparatively low number of eggs per plant, minimum dead heart count, low chlorophyll content index and high trichome density per mm2. High heritability (broad sense) was recorded for trichome density per mm2 due to high additive gene action.
Atherigona soccata, Sorghum bicolor, sorghum shoot fly, variability, heritability, genetic advance
Ahmed, M., E.l. Naim, M. Ibrahim, Ibrahim Mohammed, E. Abdel Rahman, A. Elshiekh Ibrahim. 2012. Evaluation of some local sorghum (Sorghum bicolor (L.) Moench) genotypes in rain-fed. International J. Plant Research., 2(1): 15-20.
Chavan, S.K., R.C. Mahajan and K.G. Nandanwanvar. 2010. Genetic variability studies in sorghum. Karnataka J. Agri. Sci,. 23(2): 322-323.
Deshpande, S.K., B.D. Biradar, P.I. Nangashetty and P.M. Salimath. 2011. Studies on inheritance of shoot fly resistance in rabi Sorghum (Sorghum bicolour L. moench.). Plant Archieves., 11(2): 979-988.
Godbharle, A.R., A.W. More and S.S. Ambekar, 2010. Genetic variability and correlation studies in elite ‘B’ and ‘R’ lines in kharif sorghum. Electronic J. Plant Breedin., 1(4):989-993.
Jain, S.K. and P.R. Patel. 2012. Genetic variability in land races of forage sorghum {Sorghum bicolor (L.) Moench} collected from different geographical origin of India. International Journal Agri. Sciences., 4(2):182-185.
Johnson, H.W., H.F. Robinson and R.E. Comstock. 1955. Estimation of genetic and environmental variability in Soybean. Agron.J., 47: 314-318.
Mahajan R.C., P.B. Wadikar, S.P. Pole and M.V. Dhuppe. 2011. Variability and correlation in sorghum. Res. J. of Agri. Sci., 2(1): 101-103.
Shinde, D.G., B.D. Biradar, P.M. Salimath, M.Y. Kamatar, A.R. Hundekar and S.K. Deshpande. 2010. Studies on genetic variability among the derived lines of B X B, B X R and R X R crosses for yield attributing traits in rabi sorghum (Sorghum bicolor (L.) Moench).
Singh P. and S.S. Narayanam. 2006. Biometrical Techniques in Plant Breeding. Kalyani Publishers. pp. 17-18.
Rao, S.S., Muhammad Basheeruddin, K.H. Sahib, 2000. Correlation studies between the plant characters and shootfly resistance in sorghum. Crop Res. (Hisar)., 19(2): 366-367.
Robinson H.F., R.E. Constock and P.H. Harvey. 1951. Genotypic and phenotypic correlations in corn and their implications in selection. Agron. J., 43: 262-67.
Tiwari, D.K., R.S. Gupta and R. Mishra, 2003. Study of heritability and genetic advance in grain sorghum. Plant Arch., 3(2): 181-182. Vavilov, N.I.1935. The origin variation, immunity of cultivated plants translated in 1950, Walthan, Mass USA.
Verma, Tarun and S.P. Singh, 2000. Morphophysio plant characters associated with shootfly resistance sorghum. Haryana Agric. Univ.J.Res., 30(1/2): 41-43.
