Division of Genetics, Indian Agricultural Research Institute, New Delhi
**Present address: Plant Breeding Department, Punjab Agricultural University, Ludhiana, Punjab.
*Part of the thesis submitted by GSN for Ph.D. degree of the Indian Agricultural Research Institute, New Delhi.
Aminoacid (both as per cent of protein and mg. per gram of grain) analysis in a 9 × 9 diallel cross of sorghum indicated significant variation for most of the amino acids. It was observed that, in general, most of the amino acids were predominantly governed by non-additive gene effects. Degree of dominance ranged from 1–03 for proline to 11–56 for threonine. The estimates of F and other statistics indicated that recessives were more frequent. Correlation coefficient between (Vr+Wr) and Yr showed dominant genes were positive for all the amino acids excepting cystine, methionine and lysine in which case the situation was reverse. The breeding methodology for better quality and high yielding varieties has been discussed.
