Title: Combining ability analysis of ZP maize inbred lines for grain yield and yield components.
Abstract: AbstractA half diallel cross was used to evaluate combining abilities of six maize inbred lines andtheir hybrid combinations for grain yield, ear length, number of kernel rows per ear andnumber of kernels per row. Analysis was done using Griffing’s formula (1956 ), method 2,mathematic model I. General and specific combining ability (G CA and SCA) mean squareswere significant for all traits. GCA/SCA ratios revealed that additive gene effects had largerimportance in inheritance of all of investigated traits than non-additive effects. Furthermore,obtained results showed that inbred lines L4 and L5 had the best GCA effects for grain yield,while inbred line L4 had the highest GCA values for ear length and number of kernels perrow. Inbred line L6 was the best general combiner for number of kernel rows per ear. Thehybrid combinations those exhibited significant SCA effects involved low x high, average xhigh and high x high GCA parents. According to obtained results, we could be concluded thatinbred lines L4, L5 and L6 have high frequency of favorable alleles for most of theinvestigated traits and can be used in further breeding programs for new hybrids development.Key words: maize, general and specific combining abilities, yieldIntroductionMaize is a one of the leading crops in worlds agricultural production. According to FAOstatistical datas for 2011. year, 883.5 million tons of maize has been produced
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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