ESTIMATION OF COMBINING ABILITY AMONG LOCAL AND INTRODUCED MAIZE GENOTYPES

H. Al-Dulaimi, A.; P. Yousif, D.; K. Khirbet, H.

	ESTIMATION OF COMBINING ABILITY AMONG LOCAL AND INTRODUCED MAIZE GENOTYPES
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 19, Issue 7, 2014, Pages 0-0
Authors
A. H. Al-Dulaimi; D. P. Yousif; H. K. Khirbet
Abstract
Seven genotypes of maize (Zea mays L.) were used in this study using half diallel cross without reciprocals in spring of 2002. The parents and crosses were sown in fall season of 2002 at Al-Tuwaitha Experimental Station, Agriculture Research Directorate using a RCB design with four replications. General and specific combining ability were studied for agronomic, yield and its components characteristics. Highly significant differences were found among the different genotypes for all characters under investigation. The general combining ability mean Squares were greater than the specific combining ability mean squares for all characters, except plant height. Results showed that the parents 1 and 7 were the best according to the higher effect G.C.A. for most of the characteristics. Parents 1 was superior for many characters like plant height, ear length, and number of leaves, whereas the parents 7 was superior for yield traits like number of ear rows, number of kernel/ ear and plant grain yields. The hybrid (5x 6) was superior in S.C.A. for most characters

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