COMARISION BETWEEN SELECTION OF HONEYCOMB AND SELECTION UNDER NORMAL PLANT DENSITIES ON MAIZE YIELD

	COMARISION BETWEEN SELECTION OF HONEYCOMB AND SELECTION UNDER NORMAL PLANT DENSITIES ON MAIZE YIELD
journal of kerbala university
Article 1, Volume 11, Issue 1, 2015, Pages 182-192 PDF (0 K)
Abstract
A field trail was conducted at farm of Agric. Coll. in Abu-Graib during two seasons, Autumn season, 2013 and Spring seasom,2014. The goal was to compare the efficiency of two selection methods by honeycomb and selection under normal density on yield and its components in maize. RCBD was used by factorial arrangement with three replicates in conducting the trail. Selection was made at first season according to selection index (No. of grains per ear) on four inbred lines, F2 hybrids and two synthetic varieties (Talar and Rabeeh). At the second season, comparison trail between selected genotypes was conducted to determine their best performance on yield and its components in maize. Results of statistical analysis of comparison trail indicated that synthetic varieties were superior in 300 grains weight and total grain yield amount to 66.33gm and 6149 kg.ha-1. Inbred lines gave lowest mean in plant height as compared with hybrids and synthetic varieties. Inbred line ZM7 gave lowest plant height and days to maturity reached to 171.67cm and 96days, respectively. Therefore, weak performance of this inbred line reflected on its low yielding ability. Hybrids (P2 x P3) F3 and (P3 x P4) F3 were highest in No. of grains per ear and No. of ears per plant reached to 385.8 and 1.648ears.plant-1, respectively. There were significant differences between two selection methods in some traits. Honeycomb selection was the best in No. of grains per ear, grain weight and total grain yield while there was no significant differences between two selection methods in days to anthesis, days to maturity and ears per plant. The

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