TAILIEUCHUNG - Comparison of hybrid maize obtained from inbred lines that are selected via top-crossing and discriminant analysis

This research was done at the Black Sea Agricultural Research Institute in Samsun, in 2006 and 2007. The study was conducted to determine the effectiveness of discriminant analysis in determining the parents among inbred lines in hybrid corn breeding. | Research Article Turk J Agric For 36 (2012) 659-667 © TÜBİTAK doi: Comparison of hybrid maize obtained from inbred lines that are selected via top-crossing and discriminant analysis Ahmet ÖZ* Department of Biology, Faculty of Science, Çankırı Karatekin University, Çankırı – TURKEY Received: ● Accepted: Abstract: This research was done at the Black Sea Agricultural Research Institute in Samsun, in 2006 and 2007. The study was conducted to determine the effectiveness of discriminant analysis in determining the parents among inbred lines in hybrid corn breeding. Grain yield and some yield components of the hybrid maize, which was obtained from inbred lines that were selected in accordance with top-crossing and discriminant analysis, was examined in the research. According to the average of 2 years, the average grain yield of 11 maize hybrids obtained via top-crossing was 9160 kg ha-1, whereas the average grain yield of 8 maize hybrids obtained in accordance with discriminant analysis was 8550 kg ha-1. Among the hybrid maize obtained via top-crossing, the TK-120 × TK-108 hybrid gave the highest yield (10,820 kg ha-1). Among the hybrid maize obtained in accordance with discriminant analysis, the TK-169 × TK-413 hybrid gave the highest yield (9340 kg ha-1). Some of the hybrids that used inbred lines selected via discriminant analysis had a higher grain yield than some of those that used inbred lines selected via top-crossing. In view of the obtained results, it can be stated that determining parents via discriminant analysis can supplement the deficient aspects of the top-crossing method. Key words: Discriminant analysis, grain yield, maize, top cross, yield components Introduction The importance of maize is progressively increasing in Turkey and the world. Maize is an important species owing to the fact that it has many areas of use: it can provide products for different branches of industry, it is significant in human .

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