Loading...

COMBINING ABILITY ANALYSIS AND HETEROSIS ESTIMATES IN HIGH QUALITY PROTEIN MAIZE INBRED LINES*

Article Id: ARCC2678 | Page : 49 - 53
Citation :- COMBINING ABILITY ANALYSIS AND HETEROSIS ESTIMATES IN HIGH QUALITY PROTEIN MAIZE INBRED LINES*.Indian Journal of Agricultural Research.2007.(41):49 - 53
Manpreet Bajaj, Sitar Singh Verma, Anil Kumar, Manoj Kumar Kabdal, Jay Prakash Aditya and Ashish Narayan
Address : Department of Genetics and Plant Breeding, G.B. Pant University of Agriculture and Technology, Pantnagar - 263 145, India

Abstract

Combining ability analysis using top cross method was performed in high quality protein maize (QPM) inbred lines for yield and yield contributing characters in order to assess the QPM inbred lines for general combining ability (gca) and to estimate mid parent and standard heterosis. The major interest was to seek out specific set of lines having maximum genetic distance that maximizes expression of heterosis in hybrid combination. The top cross, I14 x S superceded the checks in grain yield followed by the other crosses I6 x S, I4 x S, I3 x S, I18 x S and I7 x S. Significant positive gca effects for grain yield were revealed by the inbred I3, I4 and I6. Mid parent heterosis was observed to be 53.08% for grain yield in cross, I14 x S. The cross showed highest standard heterosis for grain yield (36.83%). The inbred line I7, I18 and I20 revealed negative significant gca effects for days to 50% silking which can be utilized for developing early maturing hybrids.

References

  1. Dehghanpour, Z. et al. (1996). Indian J. Genet., 50: 357-365.
  2. Desai, S.A. and Singh, R.D. (2000). Karnataka J. Agric. Sci., 13: 554-556.
  3. Ganguli, D.K. et al. (1989). J. Res. Birsa Agric. Univ., 1: 59-63.
  4. Genova, I. (1984). Genetica i selektsiya, 17: 323-332.
  5. Gupta, S.C. et al. (1994). Crop Res. Hisar, 8: 634-636.
  6. Joshi, V.N. et al. (1998). Indian J. Genet., 58: 519-524.
  7. Kabdal, M.K. (2000). M.Sc. (Ag.) Thesis, GBPUA and T, Pantnagar, India, 115 p.
  8. Mather, K.K. et al. (1998). Indian J. Genet., 58: 177-182.
  9. Singh, D.N. (1984). M.Sc. (Ag.) Thesis, GBPUA and T, Pantnagar

Global Footprints