Affiliation:
1. Department of Biotechnology and Plant Breeding, Science and Research Branch Islamic Azad Univeristy Tehran Iran
2. College of Agriculture & Natural Resources (UCAN) University of Tehran Karaj Iran
3. Department of Animal Science and Aquaculture Dalhousie University Truro Nova Scotia Canada
4. Institute of Land Use, Engineering and Precision Farming Technology University of Debrecen Debrecen Hungary
5. Department of Agronomy, College of Agricultural Sciences Shahed University Tehran Iran
6. Crop and Horticultural Science Research Department, Ardabil Agricultural and Natural Resources Research and Education Center Agricultural Research, Education and Extension Organization (AREEO) Moghan Iran
Abstract
AbstractIn order to identify the effect of genotype × trait, 20 maize (Zea mays L.) hybrids were cultivated and investigated in a randomized complete block design in three replications in the Karaj region. The results of the analysis of variance showed that the effect of genotype in terms of all traits except for the traits of days until the tassel dries, peduncle outside the flag leaf, tassel length, the number of fill seeds, and the depth of the seeds are significantly different. Based on the mean comparison done by Duncan's method, G3, G6, G7, and G4 genotypes were identified as favorable hybrids. Based on the graphic analysis, the genotypes G5, G4, G6, G3, G9, and G14 can be identified as desirable hybrids. The correlation diagram indicated that the grain yield trait has a positive correlation with tassel length, leaf length, leaf width, and leaf surface traits. Based on the principal component analysis, the first 10 components explained more than 74% of the data variance. The traits were classified into 10 components: components of ear characteristics, time characteristics in terms of maturity, leaf characteristics, characteristics of maize plant 1 (cob corn diameter, peduncle length, and grain yield traits), characteristics of maize plant 2 (number of tassel branches, leaf surface, and grain yield traits), physiological characteristics and germination, the crown part of the ear characteristics, grain characteristics, grain yield, and characteristics of the ear head. The experiment results indicated that G8, G15, G1, and G6 hybrids were more favorable in terms of grain yield trait.