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Combining ability, Gene action and heritability for yield and its components in sunflower (Helianthus annuus L.) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 13, Issue 1, 2013, Pages 143-151 | ||
| Authors | ||
| Tamather Adel Ahmed AL-Dulaimy; and Wajeeh M.Hassan Al-Rawi | ||
| Abstract | ||
| Five inbred lines of sunflower have been introduced within the full diallel cross proposed by Griffing(1956) . Planted in the spring season 2011 in afield belonging to a farmer in AL-Dour city.produced seeds of (20) hybrids in addition to seeds of (5) parents .the resulting seeds planted as a compared experiment in the autumen season 2011 , according to randomized complete block design with three replication to study general and specific combining ability ,estimate some genetic parameters and to estimate the effect of reciprocal cross, for number of seeds in the head ,seed weight, seed set and seed yield . High significant differences were found for all traits except seed weight . Inbred line 5 had the higher positive effect to general combining ability for yield and seed weight . Superiority (5×1) by giving the higher positive effect to specific combining ability for seed set and seed yield . The hybrids (5×3) , (5×3) and (3×1) had higher positive effect to specific comining ability for number of seeds in the head and seed weight .The heigher ratio of heritability in broad sense (85.26%) in a single crosses for seed yield ,While the ratio of heritability in narrow sense was low for all traits . The average degree of dominance was greater than 1 in asingle crosses for number of seeds in the head, single and reciprocal crosses for seed yield .Which shows the over dominance .A significant role was found for cytoblasmic inheritance to control the traits, except seed weight. | ||
| Keywords | ||
| Ragreation; soybean | ||
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