Combining abilities of inbred lines for dry matter yield of maize (Zea mays L.) Hybrids

Abstract

This study encompass the investigation on combining abilities of six maize inbred lines and their diallel hybrids of F1 generation for dry matter yield of both, the whole plant and the ear. The analysis of combining abilities was performed following Griffing (1956) method 2, model I, without reciprocal crosses, while the analysis the genetic components of variance and the regression analysis were done after the model proposed by Hayman and Jinks (1954) and Mather and Jink (1971). Dominant gene effects in inheritance of dry matter yield of the whole plant and the ear were determined by the analysis of combining abilities. The role of these effects are also observable from the analysis of genetic components of variations and results of the Vr/Wr regression analysis. The inbred line ZPLB 406 was the inbred with the highest GCA effects. .

Keywords

• additive
• dominant
• diallel cross
• combining ability
• regression analysis