A Comparison of maize commercial varieties in terms of grain yield and its components

Abstract

The experiment carried out in order to comparison of maize commercial cultivars grain yield and its components in Kamyaran region, Kurdistan province of Iran, during the 2013 cropping season. The fourteen commercial cultivars of maize evaluated as Randomize Complete Block Design (RCBD) with three replications. Days to maturity, days to harvest, grains rows cob -1 , grains row -1 , 100-grain weight (gr), grain moisture content (%), grain yield mean per five plants (gr) and grain yield hectare-1(t/h) were measured. Analysis of variance results showed studied cultivars were deferent significantly for all measured traits at the level of 1%. That indicated genetic variation among studied cultivars. According to Duncan’s mean comparison results at 5% level the highest value of measured traits were belonged to 89May70 and Hido cultivars. These cultivars produced higher grain yield hectare -1 with the value of 11.4 and 10.1 (t ha-1), respectively, and showed significant deference than KSC 704 traditional cultivar with the value of 8.7(t ha -1 ). The Cantabris cultivar accounted for lowest amount of grain yield hectare-1 (5.4 t h-1). The cluster analysis classified studied cultivars into four separate clusters. Two hopeful cultivars of 89May70 and Hido classified into two separate clusters. Therefore, we could be using from these cultivars in breeding programs for release of the cultivars with highest hetrosis vigor and grain yield.