Genetical studies of some morphological traits and yield of Balady cabbage using north Carolina design II

الملخص EN

This work was carried out at Ghazala Experimental Farm, Fac.

Agric., Zagazig Univ., Egypt, during the two successive winter seasons of ٢٠١٥ / ٢٠١٦ and ٢٠١٦ / ٢٠١٧, to estimates the genetic parameters for Balady cabbage, using North Carolina Mating Design II.

Ten selected plants were used for this study (five as males and other five as females) from Balady cabbage population.

Results of this study showed insignificant mean squares for male × female interaction for all the studied traits, except that for stem diameter, leaf width, wrapper leaves weight per plant and head height, which were highly significant.

Estimations of additive variance (σ٢ A) were higher than dominance variance (σ٢ D) for stem diameter, leaf width, head height, head diameter and head weight per plant (yield), indicate the important of additive gene action in the inheritance of these traits.

Nevertheless, σ٢ D was higher than σ٢ A for stem height from wrapper leaves to head, leaf length, and wrapper leaf number and weight per plant, so that the dominance was played very important role in the inheritance of these traits.

The heritability in broad-sense ranged from -٤.٣٠ % for stem height up to wrapper leaves to ٨٣.٨٠ % for leaf width.

While, narrow-sense of heritability ranged from -٢.١٠ % for stem height up to wrapper leaves to ٩٧.٣٥ % for head height.