KAHRIMAN, Fatih Çanakkale Onsekiz Mart University - Faculty of Agriculture - Department of Field Crops, Turkey , EGESEL, Cem Ömer Çanakkale Onsekiz Mart University - Faculty of Agriculture - Department of Agricultural Biotechnology, Turkey , CEBECİ, Rüstem Çanakkale Onsekiz Mart University - Faculty of Agriculture - Department of Field Crops, Turkey , DEMİR, Ahmet Beta Ziraat Company, Turkey , BAYRAKTAR, Sara Beta Ziraat Company, Turkey

Genetic Analysis of Flowering in Maize based on Calendar and Thermal Time

38714

The objectives of this study were to investigate the genetic effects on flowering traits in maize and to determine the suitable families for potential use in the future breeding studies. Six generations (P1, P2, F1, F2, BcP1F1, BcP2F1) of five different maize families were used as plant material in this study. These materials were generated in the years of 2011 and 2012, than evaluated in 2013. Four flowering traits (days to tasseling, days to pollen shading, days to silking and anthesis silking interval) were investigated. Type of gene action, narrow heritability values, effective gene number and genetic gain from selection for investigated traits were determined by the Generation Mean Analysis method. A considerable variation for the evaluated traits was found among the families and their generations. The results of the study showed that few genes had effect on the evaluated flowering traits. Additive gene action was preponderance for most of the flowering traits, while dominance and epistatic interactions were significant just in two families. In terms of the significance of gene effects, the results were similar from both calendar and thermal time calculations, but not for the heritability estimations. Some of the families (IHOxMo17, IHPxHya, Mo17xIHO) showed potential for effective selection for flowering traits.

193

Genetic effects , Growing degree days , Zea mays

Yuzuncu Yil University Journal Of Agricultural Sciences

199