Evaluation Lines and Their Half Diallel Crosses for Phenotypic Characteristics by Using Cluster Analysis of Maize(Zea mays L.) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 17, Issue 3, September 2017, Pages 33-49 | ||
| Authors | ||
| Ahmed H. A. Anees; Wajeh M. H. AL-Rawi; Sabah A.M. AL-dawoode | ||
| Abstract | ||
| Seven pure lines of maize (Zea mays L.) (Agr-183, ZM47W, CML494, IK58, ZP505, ZP670, ZP197)were used in a half Diallel crosses program according to the second Griffing method (1956),in autumn 2014 season ,at the farm field in Tuz /Salahaddin , planted 21 single crosses and parents as well as the check variety (Drachma) on 20 July 2015 by using Randomized Completely Block Design with three replications to study the Genetic distance between parents and crosses for the flowing characters: ( days to 50% male of male and female flowering, plant height(cm), main ear height(cm), leaves no. upper main ear , leaf area surrounding main ear(cm2), no. ears per plant, ear length(cm), ear diameter(cm), no. of rows per ear, no. of grains per row, no. of grains per ear, 300 grain weight(gm), plant yield(gm), and protein and oil content(%).The genotypes ( parents and first filial hybrids and commercial cross )showed significant differences at 1% level probability for all studied traits except no. ears per plant which was significant at 5%level in the parents. Parents (CML494 and ZP505 and ZP670) were superior in four characters. The hybrid (ZM47W × CML494) had been marked superiority in five characters(plant height, main ear height, number of ears per plant, number of leaves over main ear , area of leaf surrounding main ear, ear length, 300 grain weight) compare with the other crosses also (Agr-183 × ZP505) hybrid was remarkably superior in the number of ears per plant, ear length, number of grains per row, plant yield .The crosses (1 × 4) and (1 × 5) and (2 × 4) and (5 × 6) Showed significant hybrid vigor for the most traits studied towards desired direction comparison with the best parents and check variety as interpretation of large genetic distance of their parents that laid in different major and minor groups. The highest genetic distance(22661.37) was between 2and4 parents which would be useful for exploiting hybrid vigor. | ||
| Keywords | ||
| Maize; Half Diallel Crosses; Hybrid vigor; cluster analysis | ||
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