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Bread wheat (Triticum aestivum L. em. Thell) is one of the most
important cereal grain crop of the world and is cultivated over a
wide range of climatic conditions. For a successful breeding
program the inheritance of yield related traits is a pre-
requisite. This monograph communicates the inheritance pattern of
yield and related traits in bread wheat (Triticum aestivum L.)
using 8x8 diallel analyses. Graphical analysis revealed additive
gene action for days to heading, days to maturity, plant height,
grains per spike, 1000 grains weight and harvest index. While over
dominance gene action for flag leaf area, tillers per plant, Spike
length and yield per plant. The GCA mean squares were significant
for all traits except tiller per plant and yield per plant and were
greater than SCA mean squares indicating the preponderance of
additive genetic effects. The parents Tkb, Tat, Sarc-3 and SQ- 92
were good general combiners. The parents Tkb, Tat, Sarc-3 and SQ-92
and the specific crosses that showed high mid parent and better
parent heterosis are recommended for further use in wheat breeding
programmes.
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